./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.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_37-indirect_racing.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 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 --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 10:08:45,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:08:45,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:08:45,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:08:45,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:08:45,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:08:45,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:08:45,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:08:45,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:08:45,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:08:45,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:08:45,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:08:45,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:08:45,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:08:45,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:08:45,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:08:45,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:08:45,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:08:45,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:08:45,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:08:45,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:08:45,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:08:45,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:08:45,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:08:45,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:08:45,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:08:45,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:08:45,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:08:45,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:08:45,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:08:45,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:08:45,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:08:45,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:08:45,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:08:45,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:08:45,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:08:45,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:08:45,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:08:45,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:08:45,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:08:45,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:08:45,782 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:08:45,815 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:08:45,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:08:45,816 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:08:45,817 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:08:45,817 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:08:45,818 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:08:45,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:08:45,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:08:45,819 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:08:45,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:08:45,820 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:08:45,820 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:08:45,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:08:45,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:08:45,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:08:45,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:08:45,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:08:45,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:08:45,821 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:08:45,821 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:08:45,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:08:45,822 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:08:45,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:08:45,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:08:45,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:08:45,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:08:45,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:08:45,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:08:45,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:08:45,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:08:45,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:08:45,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:08:45,824 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:08:45,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:08:45,824 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:08:45,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:08:45,825 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:08:45,825 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:08:46,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:08:46,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:08:46,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:08:46,152 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:08:46,153 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:08:46,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2023-08-30 10:08:47,381 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:08:47,681 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:08:47,682 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2023-08-30 10:08:47,700 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f2bb0154/7b1ee1d1cc604ecc8822536616a3a297/FLAG308dd35ed [2023-08-30 10:08:47,718 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f2bb0154/7b1ee1d1cc604ecc8822536616a3a297 [2023-08-30 10:08:47,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:08:47,721 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:08:47,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:08:47,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:08:47,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:08:47,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:08:47" (1/1) ... [2023-08-30 10:08:47,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@792c881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:08:47, skipping insertion in model container [2023-08-30 10:08:47,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:08:47" (1/1) ... [2023-08-30 10:08:47,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:08:47,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:08:47,975 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_37-indirect_racing.i[30176,30189] [2023-08-30 10:08:47,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:08:48,007 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:08:48,062 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_37-indirect_racing.i[30176,30189] [2023-08-30 10:08:48,072 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:08:48,125 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:08:48,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:08:48 WrapperNode [2023-08-30 10:08:48,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:08:48,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:08:48,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:08:48,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:08:48,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:08:48" (1/1) ... [2023-08-30 10:08:48,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:08:48" (1/1) ... [2023-08-30 10:08:48,193 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2023-08-30 10:08:48,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:08:48,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:08:48,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:08:48,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:08:48,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:08:48" (1/1) ... [2023-08-30 10:08:48,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:08:48" (1/1) ... [2023-08-30 10:08:48,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:08:48" (1/1) ... [2023-08-30 10:08:48,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:08:48" (1/1) ... [2023-08-30 10:08:48,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:08:48" (1/1) ... [2023-08-30 10:08:48,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:08:48" (1/1) ... [2023-08-30 10:08:48,235 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:08:48" (1/1) ... [2023-08-30 10:08:48,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:08:48" (1/1) ... [2023-08-30 10:08:48,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:08:48,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:08:48,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:08:48,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:08:48,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:08:48" (1/1) ... [2023-08-30 10:08:48,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:08:48,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:08:48,282 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 10:08:48,297 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 10:08:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:08:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:08:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 10:08:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:08:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:08:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 10:08:48,325 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 10:08:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:08:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:08:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:08:48,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:08:48,327 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 10:08:48,474 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:08:48,475 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:08:48,727 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:08:48,734 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:08:48,734 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-30 10:08:48,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:08:48 BoogieIcfgContainer [2023-08-30 10:08:48,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:08:48,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:08:48,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:08:48,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:08:48,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:08:47" (1/3) ... [2023-08-30 10:08:48,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196de8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:08:48, skipping insertion in model container [2023-08-30 10:08:48,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:08:48" (2/3) ... [2023-08-30 10:08:48,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196de8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:08:48, skipping insertion in model container [2023-08-30 10:08:48,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:08:48" (3/3) ... [2023-08-30 10:08:48,743 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2023-08-30 10:08:48,750 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:08:48,759 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:08:48,760 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 10:08:48,760 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:08:48,816 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 10:08:48,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 123 transitions, 254 flow [2023-08-30 10:08:48,909 INFO L130 PetriNetUnfolder]: 17/154 cut-off events. [2023-08-30 10:08:48,910 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:08:48,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 154 events. 17/154 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 371 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 80. Up to 6 conditions per place. [2023-08-30 10:08:48,915 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 123 transitions, 254 flow [2023-08-30 10:08:48,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 120 transitions, 248 flow [2023-08-30 10:08:48,924 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:08:48,931 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 120 transitions, 248 flow [2023-08-30 10:08:48,934 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 120 transitions, 248 flow [2023-08-30 10:08:48,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 120 transitions, 248 flow [2023-08-30 10:08:48,968 INFO L130 PetriNetUnfolder]: 16/151 cut-off events. [2023-08-30 10:08:48,969 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:08:48,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 151 events. 16/151 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 369 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 80. Up to 6 conditions per place. [2023-08-30 10:08:48,973 INFO L119 LiptonReduction]: Number of co-enabled transitions 3280 [2023-08-30 10:08:52,207 INFO L134 LiptonReduction]: Checked pairs total: 5962 [2023-08-30 10:08:52,207 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-08-30 10:08:52,221 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:08:52,226 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;@41c139cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:08:52,227 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 10:08:52,230 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2023-08-30 10:08:52,230 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:08:52,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:08:52,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 10:08:52,234 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 10:08:52,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:08:52,239 INFO L85 PathProgramCache]: Analyzing trace with hash 14591193, now seen corresponding path program 1 times [2023-08-30 10:08:52,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:08:52,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20550335] [2023-08-30 10:08:52,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:52,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:08:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:08:52,501 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 10:08:52,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:08:52,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20550335] [2023-08-30 10:08:52,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20550335] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:08:52,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:08:52,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:08:52,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205996857] [2023-08-30 10:08:52,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:08:52,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:08:52,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:08:52,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:08:52,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:08:52,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 229 [2023-08-30 10:08:52,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 39 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states 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 10:08:52,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:08:52,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 229 [2023-08-30 10:08:52,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:08:52,679 INFO L130 PetriNetUnfolder]: 112/255 cut-off events. [2023-08-30 10:08:52,679 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:08:52,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 255 events. 112/255 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 916 event pairs, 91 based on Foata normal form. 9/197 useless extension candidates. Maximal degree in co-relation 493. Up to 236 conditions per place. [2023-08-30 10:08:52,682 INFO L137 encePairwiseOnDemand]: 216/229 looper letters, 40 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-30 10:08:52,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 180 flow [2023-08-30 10:08:52,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:08:52,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:08:52,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2023-08-30 10:08:52,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5443959243085881 [2023-08-30 10:08:52,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions. [2023-08-30 10:08:52,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions. [2023-08-30 10:08:52,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:08:52,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions. [2023-08-30 10:08:52,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states 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 10:08:52,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states 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 10:08:52,710 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states 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 10:08:52,711 INFO L175 Difference]: Start difference. First operand has 34 places, 39 transitions, 86 flow. Second operand 3 states and 374 transitions. [2023-08-30 10:08:52,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 180 flow [2023-08-30 10:08:52,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:08:52,716 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 74 flow [2023-08-30 10:08:52,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-08-30 10:08:52,721 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2023-08-30 10:08:52,721 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 74 flow [2023-08-30 10:08:52,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states 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 10:08:52,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:08:52,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:08:52,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:08:52,723 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 10:08:52,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:08:52,723 INFO L85 PathProgramCache]: Analyzing trace with hash 894537315, now seen corresponding path program 1 times [2023-08-30 10:08:52,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:08:52,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997790915] [2023-08-30 10:08:52,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:52,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:08:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:08:52,992 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 10:08:52,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:08:52,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997790915] [2023-08-30 10:08:52,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997790915] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:08:52,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:08:52,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:08:52,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886328635] [2023-08-30 10:08:52,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:08:52,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:08:52,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:08:52,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:08:52,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:08:53,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 229 [2023-08-30 10:08:53,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 102.5) internal successors, (410), 4 states have internal predecessors, (410), 0 states have call successors, (0), 0 states 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 10:08:53,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:08:53,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 229 [2023-08-30 10:08:53,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:08:53,161 INFO L130 PetriNetUnfolder]: 96/222 cut-off events. [2023-08-30 10:08:53,162 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-30 10:08:53,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 222 events. 96/222 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 746 event pairs, 29 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 466. Up to 157 conditions per place. [2023-08-30 10:08:53,164 INFO L137 encePairwiseOnDemand]: 224/229 looper letters, 33 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2023-08-30 10:08:53,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 173 flow [2023-08-30 10:08:53,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:08:53,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:08:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 445 transitions. [2023-08-30 10:08:53,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48580786026200873 [2023-08-30 10:08:53,169 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 445 transitions. [2023-08-30 10:08:53,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 445 transitions. [2023-08-30 10:08:53,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:08:53,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 445 transitions. [2023-08-30 10:08:53,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 10:08:53,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states 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 10:08:53,176 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states 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 10:08:53,176 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 74 flow. Second operand 4 states and 445 transitions. [2023-08-30 10:08:53,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 173 flow [2023-08-30 10:08:53,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 39 transitions, 167 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:08:53,178 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 83 flow [2023-08-30 10:08:53,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=83, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-08-30 10:08:53,179 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2023-08-30 10:08:53,179 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 83 flow [2023-08-30 10:08:53,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.5) internal successors, (410), 4 states have internal predecessors, (410), 0 states have call successors, (0), 0 states 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 10:08:53,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:08:53,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:08:53,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 10:08:53,181 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 10:08:53,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:08:53,184 INFO L85 PathProgramCache]: Analyzing trace with hash -65573905, now seen corresponding path program 1 times [2023-08-30 10:08:53,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:08:53,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821293592] [2023-08-30 10:08:53,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:53,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:08:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:08:53,356 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 10:08:53,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:08:53,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821293592] [2023-08-30 10:08:53,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821293592] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:08:53,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:08:53,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:08:53,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169776020] [2023-08-30 10:08:53,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:08:53,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:08:53,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:08:53,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:08:53,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:08:53,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 229 [2023-08-30 10:08:53,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 83 flow. Second operand has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states 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 10:08:53,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:08:53,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 229 [2023-08-30 10:08:53,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:08:53,506 INFO L130 PetriNetUnfolder]: 88/219 cut-off events. [2023-08-30 10:08:53,506 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-30 10:08:53,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 505 conditions, 219 events. 88/219 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 820 event pairs, 38 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 465. Up to 109 conditions per place. [2023-08-30 10:08:53,510 INFO L137 encePairwiseOnDemand]: 222/229 looper letters, 37 selfloop transitions, 9 changer transitions 3/51 dead transitions. [2023-08-30 10:08:53,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 51 transitions, 239 flow [2023-08-30 10:08:53,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:08:53,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:08:53,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 543 transitions. [2023-08-30 10:08:53,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.474235807860262 [2023-08-30 10:08:53,512 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 543 transitions. [2023-08-30 10:08:53,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 543 transitions. [2023-08-30 10:08:53,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:08:53,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 543 transitions. [2023-08-30 10:08:53,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 states 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 10:08:53,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states 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 10:08:53,517 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states 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 10:08:53,517 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 83 flow. Second operand 5 states and 543 transitions. [2023-08-30 10:08:53,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 51 transitions, 239 flow [2023-08-30 10:08:53,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 51 transitions, 235 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:08:53,521 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 126 flow [2023-08-30 10:08:53,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2023-08-30 10:08:53,523 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2023-08-30 10:08:53,523 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 126 flow [2023-08-30 10:08:53,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states 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 10:08:53,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:08:53,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:08:53,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 10:08:53,524 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 10:08:53,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:08:53,525 INFO L85 PathProgramCache]: Analyzing trace with hash -65573925, now seen corresponding path program 1 times [2023-08-30 10:08:53,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:08:53,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584630765] [2023-08-30 10:08:53,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:53,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:08:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:08:53,712 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 10:08:53,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:08:53,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584630765] [2023-08-30 10:08:53,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584630765] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:08:53,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:08:53,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:08:53,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094535674] [2023-08-30 10:08:53,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:08:53,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:08:53,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:08:53,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:08:53,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:08:53,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 229 [2023-08-30 10:08:53,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 126 flow. Second operand has 6 states, 6 states have (on average 98.66666666666667) internal successors, (592), 6 states have internal predecessors, (592), 0 states have call successors, (0), 0 states 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 10:08:53,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:08:53,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 229 [2023-08-30 10:08:53,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:08:53,937 INFO L130 PetriNetUnfolder]: 79/200 cut-off events. [2023-08-30 10:08:53,938 INFO L131 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2023-08-30 10:08:53,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 200 events. 79/200 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 705 event pairs, 17 based on Foata normal form. 9/206 useless extension candidates. Maximal degree in co-relation 480. Up to 66 conditions per place. [2023-08-30 10:08:53,939 INFO L137 encePairwiseOnDemand]: 221/229 looper letters, 39 selfloop transitions, 6 changer transitions 13/60 dead transitions. [2023-08-30 10:08:53,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 60 transitions, 317 flow [2023-08-30 10:08:53,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:08:53,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:08:53,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 736 transitions. [2023-08-30 10:08:53,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4591391141609482 [2023-08-30 10:08:53,944 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 736 transitions. [2023-08-30 10:08:53,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 736 transitions. [2023-08-30 10:08:53,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:08:53,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 736 transitions. [2023-08-30 10:08:53,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 105.14285714285714) internal successors, (736), 7 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 10:08:53,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states 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 10:08:53,954 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states 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 10:08:53,954 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 126 flow. Second operand 7 states and 736 transitions. [2023-08-30 10:08:53,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 60 transitions, 317 flow [2023-08-30 10:08:53,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 60 transitions, 305 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:08:53,959 INFO L231 Difference]: Finished difference. Result has 45 places, 27 transitions, 108 flow [2023-08-30 10:08:53,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=108, PETRI_PLACES=45, PETRI_TRANSITIONS=27} [2023-08-30 10:08:53,961 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 11 predicate places. [2023-08-30 10:08:53,961 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 27 transitions, 108 flow [2023-08-30 10:08:53,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.66666666666667) internal successors, (592), 6 states have internal predecessors, (592), 0 states have call successors, (0), 0 states 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 10:08:53,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:08:53,962 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:08:53,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 10:08:53,963 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 10:08:53,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:08:53,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1531068203, now seen corresponding path program 1 times [2023-08-30 10:08:53,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:08:53,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234859419] [2023-08-30 10:08:53,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:53,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:08:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:08:54,259 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 10:08:54,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:08:54,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234859419] [2023-08-30 10:08:54,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234859419] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:08:54,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355715812] [2023-08-30 10:08:54,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:54,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:08:54,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:08:54,269 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 10:08:54,297 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 10:08:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:08:54,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 10:08:54,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:08:54,460 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:08:54,461 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 10:08:54,579 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 10:08:54,621 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 10:08:54,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:08:54,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:08:54,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355715812] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:08:54,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:08:54,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2023-08-30 10:08:54,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740841957] [2023-08-30 10:08:54,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:08:54,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:08:54,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:08:54,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:08:54,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-30 10:08:54,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 229 [2023-08-30 10:08:54,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 27 transitions, 108 flow. Second operand has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states 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 10:08:54,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:08:54,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 229 [2023-08-30 10:08:54,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:08:54,811 INFO L130 PetriNetUnfolder]: 63/154 cut-off events. [2023-08-30 10:08:54,811 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2023-08-30 10:08:54,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 154 events. 63/154 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 448 event pairs, 39 based on Foata normal form. 1/153 useless extension candidates. Maximal degree in co-relation 385. Up to 95 conditions per place. [2023-08-30 10:08:54,814 INFO L137 encePairwiseOnDemand]: 224/229 looper letters, 32 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2023-08-30 10:08:54,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 203 flow [2023-08-30 10:08:54,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:08:54,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:08:54,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 516 transitions. [2023-08-30 10:08:54,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45065502183406114 [2023-08-30 10:08:54,816 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 516 transitions. [2023-08-30 10:08:54,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 516 transitions. [2023-08-30 10:08:54,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:08:54,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 516 transitions. [2023-08-30 10:08:54,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.2) internal successors, (516), 5 states have internal predecessors, (516), 0 states have call successors, (0), 0 states 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 10:08:54,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states 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 10:08:54,821 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states 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 10:08:54,821 INFO L175 Difference]: Start difference. First operand has 45 places, 27 transitions, 108 flow. Second operand 5 states and 516 transitions. [2023-08-30 10:08:54,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 203 flow [2023-08-30 10:08:54,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 38 transitions, 186 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 10:08:54,826 INFO L231 Difference]: Finished difference. Result has 37 places, 26 transitions, 92 flow [2023-08-30 10:08:54,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2023-08-30 10:08:54,828 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-30 10:08:54,828 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 92 flow [2023-08-30 10:08:54,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states 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 10:08:54,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:08:54,829 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:08:54,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 10:08:55,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:08:55,036 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 10:08:55,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:08:55,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1531111893, now seen corresponding path program 1 times [2023-08-30 10:08:55,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:08:55,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884124393] [2023-08-30 10:08:55,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:55,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:08:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:08:55,310 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 10:08:55,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:08:55,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884124393] [2023-08-30 10:08:55,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884124393] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:08:55,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774263589] [2023-08-30 10:08:55,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:55,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:08:55,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:08:55,313 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 10:08:55,316 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 10:08:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:08:55,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 10:08:55,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:08:55,413 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:08:55,413 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 10:08:55,442 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 10:08:55,544 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 10:08:55,579 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 10:08:55,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:08:55,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:08:55,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774263589] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:08:55,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:08:55,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-30 10:08:55,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562224717] [2023-08-30 10:08:55,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:08:55,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:08:55,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:08:55,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:08:55,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:08:55,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 229 [2023-08-30 10:08:55,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 92 flow. Second operand has 6 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 0 states have call successors, (0), 0 states 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 10:08:55,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:08:55,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 229 [2023-08-30 10:08:55,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:08:55,774 INFO L130 PetriNetUnfolder]: 63/153 cut-off events. [2023-08-30 10:08:55,774 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-08-30 10:08:55,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 153 events. 63/153 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 434 event pairs, 15 based on Foata normal form. 1/152 useless extension candidates. Maximal degree in co-relation 367. Up to 59 conditions per place. [2023-08-30 10:08:55,775 INFO L137 encePairwiseOnDemand]: 224/229 looper letters, 36 selfloop transitions, 4 changer transitions 2/43 dead transitions. [2023-08-30 10:08:55,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 215 flow [2023-08-30 10:08:55,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:08:55,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:08:55,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 532 transitions. [2023-08-30 10:08:55,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646288209606987 [2023-08-30 10:08:55,778 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 532 transitions. [2023-08-30 10:08:55,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 532 transitions. [2023-08-30 10:08:55,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:08:55,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 532 transitions. [2023-08-30 10:08:55,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 0 states have call successors, (0), 0 states 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 10:08:55,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states 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 10:08:55,781 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states 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 10:08:55,781 INFO L175 Difference]: Start difference. First operand has 37 places, 26 transitions, 92 flow. Second operand 5 states and 532 transitions. [2023-08-30 10:08:55,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 215 flow [2023-08-30 10:08:55,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 43 transitions, 203 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 10:08:55,783 INFO L231 Difference]: Finished difference. Result has 36 places, 23 transitions, 75 flow [2023-08-30 10:08:55,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=75, PETRI_PLACES=36, PETRI_TRANSITIONS=23} [2023-08-30 10:08:55,784 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-08-30 10:08:55,784 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 23 transitions, 75 flow [2023-08-30 10:08:55,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 0 states have call successors, (0), 0 states 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 10:08:55,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:08:55,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:08:55,793 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 10:08:55,990 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,SelfDestructingSolverStorable5 [2023-08-30 10:08:55,991 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 10:08:55,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:08:55,991 INFO L85 PathProgramCache]: Analyzing trace with hash 582002295, now seen corresponding path program 1 times [2023-08-30 10:08:55,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:08:55,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521312015] [2023-08-30 10:08:55,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:55,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:08:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:08:56,038 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 10:08:56,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:08:56,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521312015] [2023-08-30 10:08:56,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521312015] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:08:56,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319483158] [2023-08-30 10:08:56,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:56,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:08:56,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:08:56,041 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 10:08:56,065 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 10:08:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:08:56,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:08:56,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:08:56,144 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 10:08:56,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:08:56,165 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 10:08:56,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319483158] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:08:56,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:08:56,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:08:56,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028733310] [2023-08-30 10:08:56,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:08:56,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:08:56,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:08:56,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:08:56,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:08:56,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 229 [2023-08-30 10:08:56,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 23 transitions, 75 flow. Second operand has 7 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 10:08:56,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:08:56,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 229 [2023-08-30 10:08:56,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:08:56,205 INFO L130 PetriNetUnfolder]: 10/35 cut-off events. [2023-08-30 10:08:56,205 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-30 10:08:56,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 35 events. 10/35 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 38 event pairs, 0 based on Foata normal form. 11/46 useless extension candidates. Maximal degree in co-relation 88. Up to 21 conditions per place. [2023-08-30 10:08:56,206 INFO L137 encePairwiseOnDemand]: 226/229 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2023-08-30 10:08:56,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 25 transitions, 135 flow [2023-08-30 10:08:56,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:08:56,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:08:56,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 441 transitions. [2023-08-30 10:08:56,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4814410480349345 [2023-08-30 10:08:56,208 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 441 transitions. [2023-08-30 10:08:56,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 441 transitions. [2023-08-30 10:08:56,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:08:56,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 441 transitions. [2023-08-30 10:08:56,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states 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 10:08:56,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states 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 10:08:56,211 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states 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 10:08:56,211 INFO L175 Difference]: Start difference. First operand has 36 places, 23 transitions, 75 flow. Second operand 4 states and 441 transitions. [2023-08-30 10:08:56,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 25 transitions, 135 flow [2023-08-30 10:08:56,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 25 transitions, 114 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 10:08:56,212 INFO L231 Difference]: Finished difference. Result has 23 places, 0 transitions, 0 flow [2023-08-30 10:08:56,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=23, PETRI_TRANSITIONS=0} [2023-08-30 10:08:56,213 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -11 predicate places. [2023-08-30 10:08:56,213 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 0 transitions, 0 flow [2023-08-30 10:08:56,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 10:08:56,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2023-08-30 10:08:56,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2023-08-30 10:08:56,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2023-08-30 10:08:56,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2023-08-30 10:08:56,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2023-08-30 10:08:56,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2023-08-30 10:08:56,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2023-08-30 10:08:56,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2023-08-30 10:08:56,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2023-08-30 10:08:56,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2023-08-30 10:08:56,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2023-08-30 10:08:56,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2023-08-30 10:08:56,225 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 10:08:56,423 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 10:08:56,424 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:08:56,426 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:08:56,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 123 transitions, 254 flow [2023-08-30 10:08:56,451 INFO L130 PetriNetUnfolder]: 17/154 cut-off events. [2023-08-30 10:08:56,451 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:08:56,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 154 events. 17/154 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 371 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 80. Up to 6 conditions per place. [2023-08-30 10:08:56,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 123 transitions, 254 flow [2023-08-30 10:08:56,453 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 114 transitions, 233 flow [2023-08-30 10:08:56,453 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:08:56,453 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 114 transitions, 233 flow [2023-08-30 10:08:56,453 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 114 transitions, 233 flow [2023-08-30 10:08:56,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 114 transitions, 233 flow [2023-08-30 10:08:56,478 INFO L130 PetriNetUnfolder]: 16/145 cut-off events. [2023-08-30 10:08:56,478 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:08:56,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 145 events. 16/145 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 355 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 80. Up to 6 conditions per place. [2023-08-30 10:08:56,480 INFO L119 LiptonReduction]: Number of co-enabled transitions 3280 [2023-08-30 10:08:59,363 INFO L134 LiptonReduction]: Checked pairs total: 5791 [2023-08-30 10:08:59,364 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-08-30 10:08:59,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:08:59,365 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;@41c139cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:08:59,365 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:08:59,379 INFO L130 PetriNetUnfolder]: 2/23 cut-off events. [2023-08-30 10:08:59,379 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:08:59,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:08:59,379 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 10:08:59,379 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:08:59,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:08:59,380 INFO L85 PathProgramCache]: Analyzing trace with hash -171857603, now seen corresponding path program 1 times [2023-08-30 10:08:59,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:08:59,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287558958] [2023-08-30 10:08:59,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:59,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:08:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:08:59,395 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:08:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:08:59,421 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:08:59,421 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:08:59,421 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:08:59,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 10:08:59,422 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:08:59,422 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:08:59,423 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:08:59,423 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 10:08:59,443 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 10:08:59,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 165 transitions, 348 flow [2023-08-30 10:08:59,471 INFO L130 PetriNetUnfolder]: 31/263 cut-off events. [2023-08-30 10:08:59,471 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:08:59,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 263 events. 31/263 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 798 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 156. Up to 9 conditions per place. [2023-08-30 10:08:59,473 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 165 transitions, 348 flow [2023-08-30 10:08:59,475 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 165 transitions, 348 flow [2023-08-30 10:08:59,475 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:08:59,475 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 165 transitions, 348 flow [2023-08-30 10:08:59,476 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 165 transitions, 348 flow [2023-08-30 10:08:59,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 165 transitions, 348 flow [2023-08-30 10:08:59,495 INFO L130 PetriNetUnfolder]: 31/263 cut-off events. [2023-08-30 10:08:59,496 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:08:59,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 263 events. 31/263 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 798 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 156. Up to 9 conditions per place. [2023-08-30 10:08:59,503 INFO L119 LiptonReduction]: Number of co-enabled transitions 11280 [2023-08-30 10:09:02,371 INFO L134 LiptonReduction]: Checked pairs total: 23157 [2023-08-30 10:09:02,371 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-08-30 10:09:02,373 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:09:02,373 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;@41c139cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:09:02,373 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-30 10:09:02,375 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-08-30 10:09:02,375 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:09:02,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:02,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:09:02,376 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:02,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:02,376 INFO L85 PathProgramCache]: Analyzing trace with hash 874839407, now seen corresponding path program 1 times [2023-08-30 10:09:02,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:02,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837787656] [2023-08-30 10:09:02,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:02,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:02,408 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 10:09:02,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:02,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837787656] [2023-08-30 10:09:02,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837787656] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:02,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:02,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:09:02,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465812029] [2023-08-30 10:09:02,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:02,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:09:02,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:02,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:09:02,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:09:02,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 300 [2023-08-30 10:09:02,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 65 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states 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 10:09:02,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:02,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 300 [2023-08-30 10:09:02,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:02,967 INFO L130 PetriNetUnfolder]: 4058/6800 cut-off events. [2023-08-30 10:09:02,968 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-08-30 10:09:02,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13380 conditions, 6800 events. 4058/6800 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 44830 event pairs, 1898 based on Foata normal form. 652/5248 useless extension candidates. Maximal degree in co-relation 1539. Up to 6459 conditions per place. [2023-08-30 10:09:03,003 INFO L137 encePairwiseOnDemand]: 281/300 looper letters, 57 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-30 10:09:03,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 66 transitions, 268 flow [2023-08-30 10:09:03,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:09:03,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:09:03,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-08-30 10:09:03,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5544444444444444 [2023-08-30 10:09:03,006 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-08-30 10:09:03,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-08-30 10:09:03,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:03,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-08-30 10:09:03,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states 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 10:09:03,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states 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 10:09:03,010 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states 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 10:09:03,010 INFO L175 Difference]: Start difference. First operand has 54 places, 65 transitions, 148 flow. Second operand 3 states and 499 transitions. [2023-08-30 10:09:03,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 66 transitions, 268 flow [2023-08-30 10:09:03,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 268 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:09:03,012 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 136 flow [2023-08-30 10:09:03,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2023-08-30 10:09:03,015 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-08-30 10:09:03,015 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 136 flow [2023-08-30 10:09:03,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states 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 10:09:03,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:03,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:03,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 10:09:03,017 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:03,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:03,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1087244570, now seen corresponding path program 1 times [2023-08-30 10:09:03,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:03,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746044226] [2023-08-30 10:09:03,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:03,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:03,088 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 10:09:03,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:03,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746044226] [2023-08-30 10:09:03,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746044226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:03,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:03,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:09:03,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716997686] [2023-08-30 10:09:03,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:03,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:09:03,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:03,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:09:03,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:09:03,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 300 [2023-08-30 10:09:03,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 0 states have call successors, (0), 0 states 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 10:09:03,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:03,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 300 [2023-08-30 10:09:03,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:03,674 INFO L130 PetriNetUnfolder]: 3632/6075 cut-off events. [2023-08-30 10:09:03,674 INFO L131 PetriNetUnfolder]: For 459/459 co-relation queries the response was YES. [2023-08-30 10:09:03,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12724 conditions, 6075 events. 3632/6075 cut-off events. For 459/459 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 39034 event pairs, 1381 based on Foata normal form. 0/4423 useless extension candidates. Maximal degree in co-relation 12636. Up to 5339 conditions per place. [2023-08-30 10:09:03,706 INFO L137 encePairwiseOnDemand]: 292/300 looper letters, 67 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2023-08-30 10:09:03,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 80 transitions, 354 flow [2023-08-30 10:09:03,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:09:03,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:09:03,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 611 transitions. [2023-08-30 10:09:03,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5091666666666667 [2023-08-30 10:09:03,709 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 611 transitions. [2023-08-30 10:09:03,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 611 transitions. [2023-08-30 10:09:03,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:03,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 611 transitions. [2023-08-30 10:09:03,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 152.75) internal successors, (611), 4 states have internal predecessors, (611), 0 states have call successors, (0), 0 states 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 10:09:03,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states 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 10:09:03,713 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states 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 10:09:03,713 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 136 flow. Second operand 4 states and 611 transitions. [2023-08-30 10:09:03,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 80 transitions, 354 flow [2023-08-30 10:09:03,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 80 transitions, 351 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:09:03,715 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 185 flow [2023-08-30 10:09:03,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-08-30 10:09:03,717 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2023-08-30 10:09:03,717 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 185 flow [2023-08-30 10:09:03,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 0 states have call successors, (0), 0 states 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 10:09:03,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:03,718 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:09:03,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 10:09:03,718 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:03,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:03,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2033116079, now seen corresponding path program 1 times [2023-08-30 10:09:03,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:03,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102981181] [2023-08-30 10:09:03,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:03,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:03,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:09:03,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:03,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102981181] [2023-08-30 10:09:03,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102981181] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:03,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:03,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:09:03,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146555452] [2023-08-30 10:09:03,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:03,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:09:03,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:03,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:09:03,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:09:03,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 300 [2023-08-30 10:09:03,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 10:09:03,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:03,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 300 [2023-08-30 10:09:03,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:04,219 INFO L130 PetriNetUnfolder]: 3308/5538 cut-off events. [2023-08-30 10:09:04,220 INFO L131 PetriNetUnfolder]: For 1222/1222 co-relation queries the response was YES. [2023-08-30 10:09:04,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12769 conditions, 5538 events. 3308/5538 cut-off events. For 1222/1222 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 34654 event pairs, 3160 based on Foata normal form. 0/4521 useless extension candidates. Maximal degree in co-relation 10362. Up to 5328 conditions per place. [2023-08-30 10:09:04,256 INFO L137 encePairwiseOnDemand]: 298/300 looper letters, 48 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 10:09:04,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 279 flow [2023-08-30 10:09:04,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:09:04,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:09:04,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 461 transitions. [2023-08-30 10:09:04,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5122222222222222 [2023-08-30 10:09:04,259 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 461 transitions. [2023-08-30 10:09:04,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 461 transitions. [2023-08-30 10:09:04,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:04,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 461 transitions. [2023-08-30 10:09:04,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states 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 10:09:04,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states 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 10:09:04,263 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states 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 10:09:04,263 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 185 flow. Second operand 3 states and 461 transitions. [2023-08-30 10:09:04,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 279 flow [2023-08-30 10:09:04,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 56 transitions, 279 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:09:04,267 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 183 flow [2023-08-30 10:09:04,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-08-30 10:09:04,292 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2023-08-30 10:09:04,293 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 183 flow [2023-08-30 10:09:04,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 10:09:04,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:04,293 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:09:04,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 10:09:04,293 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:04,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:04,294 INFO L85 PathProgramCache]: Analyzing trace with hash 2033116117, now seen corresponding path program 1 times [2023-08-30 10:09:04,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:04,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841021517] [2023-08-30 10:09:04,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:04,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:04,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:09:04,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:04,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841021517] [2023-08-30 10:09:04,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841021517] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:04,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:04,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:09:04,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731252681] [2023-08-30 10:09:04,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:04,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:09:04,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:04,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:09:04,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:09:04,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 300 [2023-08-30 10:09:04,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states 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 10:09:04,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:04,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 300 [2023-08-30 10:09:04,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:04,711 INFO L130 PetriNetUnfolder]: 2984/4914 cut-off events. [2023-08-30 10:09:04,712 INFO L131 PetriNetUnfolder]: For 919/919 co-relation queries the response was YES. [2023-08-30 10:09:04,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11377 conditions, 4914 events. 2984/4914 cut-off events. For 919/919 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 31338 event pairs, 493 based on Foata normal form. 0/4157 useless extension candidates. Maximal degree in co-relation 11363. Up to 3956 conditions per place. [2023-08-30 10:09:04,734 INFO L137 encePairwiseOnDemand]: 296/300 looper letters, 73 selfloop transitions, 4 changer transitions 0/84 dead transitions. [2023-08-30 10:09:04,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 84 transitions, 417 flow [2023-08-30 10:09:04,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:09:04,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:09:04,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 484 transitions. [2023-08-30 10:09:04,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377777777777778 [2023-08-30 10:09:04,737 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 484 transitions. [2023-08-30 10:09:04,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 484 transitions. [2023-08-30 10:09:04,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:04,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 484 transitions. [2023-08-30 10:09:04,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states 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 10:09:04,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states 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 10:09:04,740 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states 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 10:09:04,740 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 183 flow. Second operand 3 states and 484 transitions. [2023-08-30 10:09:04,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 84 transitions, 417 flow [2023-08-30 10:09:04,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 84 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:09:04,747 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 194 flow [2023-08-30 10:09:04,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2023-08-30 10:09:04,748 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2023-08-30 10:09:04,748 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 194 flow [2023-08-30 10:09:04,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states 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 10:09:04,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:04,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:04,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 10:09:04,749 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:04,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:04,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1467684309, now seen corresponding path program 1 times [2023-08-30 10:09:04,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:04,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834055666] [2023-08-30 10:09:04,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:04,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:04,872 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 10:09:04,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:04,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834055666] [2023-08-30 10:09:04,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834055666] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:04,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:04,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:09:04,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383804792] [2023-08-30 10:09:04,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:04,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:09:04,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:04,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:09:04,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:09:04,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 300 [2023-08-30 10:09:04,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 130.5) internal successors, (783), 6 states have internal predecessors, (783), 0 states have call successors, (0), 0 states 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 10:09:04,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:04,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 300 [2023-08-30 10:09:04,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:05,752 INFO L130 PetriNetUnfolder]: 4069/6977 cut-off events. [2023-08-30 10:09:05,752 INFO L131 PetriNetUnfolder]: For 3141/3141 co-relation queries the response was YES. [2023-08-30 10:09:05,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16532 conditions, 6977 events. 4069/6977 cut-off events. For 3141/3141 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 46696 event pairs, 796 based on Foata normal form. 0/6041 useless extension candidates. Maximal degree in co-relation 16516. Up to 3907 conditions per place. [2023-08-30 10:09:05,794 INFO L137 encePairwiseOnDemand]: 283/300 looper letters, 152 selfloop transitions, 28 changer transitions 0/187 dead transitions. [2023-08-30 10:09:05,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 187 transitions, 971 flow [2023-08-30 10:09:05,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 10:09:05,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 10:09:05,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1341 transitions. [2023-08-30 10:09:05,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49666666666666665 [2023-08-30 10:09:05,799 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1341 transitions. [2023-08-30 10:09:05,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1341 transitions. [2023-08-30 10:09:05,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:05,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1341 transitions. [2023-08-30 10:09:05,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 149.0) internal successors, (1341), 9 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states 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 10:09:05,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 300.0) internal successors, (3000), 10 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states 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 10:09:05,806 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 300.0) internal successors, (3000), 10 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states 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 10:09:05,807 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 194 flow. Second operand 9 states and 1341 transitions. [2023-08-30 10:09:05,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 187 transitions, 971 flow [2023-08-30 10:09:05,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 187 transitions, 953 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:09:05,818 INFO L231 Difference]: Finished difference. Result has 76 places, 78 transitions, 422 flow [2023-08-30 10:09:05,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=422, PETRI_PLACES=76, PETRI_TRANSITIONS=78} [2023-08-30 10:09:05,818 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2023-08-30 10:09:05,819 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 78 transitions, 422 flow [2023-08-30 10:09:05,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 130.5) internal successors, (783), 6 states have internal predecessors, (783), 0 states have call successors, (0), 0 states 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 10:09:05,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:05,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:05,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 10:09:05,820 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:05,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:05,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1467684324, now seen corresponding path program 1 times [2023-08-30 10:09:05,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:05,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275650889] [2023-08-30 10:09:05,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:05,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:05,889 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 10:09:05,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:05,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275650889] [2023-08-30 10:09:05,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275650889] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:05,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:05,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:09:05,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784115753] [2023-08-30 10:09:05,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:05,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:09:05,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:05,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:09:05,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:09:05,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 300 [2023-08-30 10:09:05,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states 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 10:09:05,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:05,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 300 [2023-08-30 10:09:05,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:06,637 INFO L130 PetriNetUnfolder]: 4198/7497 cut-off events. [2023-08-30 10:09:06,637 INFO L131 PetriNetUnfolder]: For 9455/9455 co-relation queries the response was YES. [2023-08-30 10:09:06,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21920 conditions, 7497 events. 4198/7497 cut-off events. For 9455/9455 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 52742 event pairs, 1509 based on Foata normal form. 377/7757 useless extension candidates. Maximal degree in co-relation 21897. Up to 4115 conditions per place. [2023-08-30 10:09:06,673 INFO L137 encePairwiseOnDemand]: 288/300 looper letters, 94 selfloop transitions, 25 changer transitions 0/126 dead transitions. [2023-08-30 10:09:06,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 126 transitions, 895 flow [2023-08-30 10:09:06,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:09:06,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:09:06,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2023-08-30 10:09:06,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2023-08-30 10:09:06,675 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 490 transitions. [2023-08-30 10:09:06,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 490 transitions. [2023-08-30 10:09:06,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:06,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 490 transitions. [2023-08-30 10:09:06,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states 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 10:09:06,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states 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 10:09:06,678 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states 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 10:09:06,679 INFO L175 Difference]: Start difference. First operand has 76 places, 78 transitions, 422 flow. Second operand 3 states and 490 transitions. [2023-08-30 10:09:06,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 126 transitions, 895 flow [2023-08-30 10:09:06,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 126 transitions, 878 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-30 10:09:06,701 INFO L231 Difference]: Finished difference. Result has 78 places, 93 transitions, 651 flow [2023-08-30 10:09:06,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=651, PETRI_PLACES=78, PETRI_TRANSITIONS=93} [2023-08-30 10:09:06,703 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 24 predicate places. [2023-08-30 10:09:06,703 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 93 transitions, 651 flow [2023-08-30 10:09:06,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states 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 10:09:06,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:06,703 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:06,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 10:09:06,704 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:06,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:06,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1391290312, now seen corresponding path program 1 times [2023-08-30 10:09:06,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:06,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501453742] [2023-08-30 10:09:06,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:06,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:06,838 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 10:09:06,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:06,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501453742] [2023-08-30 10:09:06,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501453742] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:09:06,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634887987] [2023-08-30 10:09:06,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:06,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:09:06,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:09:06,841 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 10:09:06,868 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 10:09:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:06,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 10:09:06,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:09:06,943 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:09:06,943 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 10:09:06,966 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 10:09:07,046 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 10:09:07,082 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 10:09:07,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:09:07,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:09:07,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634887987] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:07,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:09:07,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-30 10:09:07,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806528063] [2023-08-30 10:09:07,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:07,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:09:07,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:07,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:09:07,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:09:07,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 300 [2023-08-30 10:09:07,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 93 transitions, 651 flow. Second operand has 6 states, 6 states have (on average 131.83333333333334) internal successors, (791), 6 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:07,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:07,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 300 [2023-08-30 10:09:07,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:07,888 INFO L130 PetriNetUnfolder]: 4074/7306 cut-off events. [2023-08-30 10:09:07,888 INFO L131 PetriNetUnfolder]: For 14273/14273 co-relation queries the response was YES. [2023-08-30 10:09:07,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23545 conditions, 7306 events. 4074/7306 cut-off events. For 14273/14273 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 50869 event pairs, 1368 based on Foata normal form. 66/7262 useless extension candidates. Maximal degree in co-relation 23519. Up to 5642 conditions per place. [2023-08-30 10:09:07,939 INFO L137 encePairwiseOnDemand]: 292/300 looper letters, 137 selfloop transitions, 22 changer transitions 0/166 dead transitions. [2023-08-30 10:09:07,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 166 transitions, 1382 flow [2023-08-30 10:09:07,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:09:07,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:09:07,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 883 transitions. [2023-08-30 10:09:07,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4905555555555556 [2023-08-30 10:09:07,942 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 883 transitions. [2023-08-30 10:09:07,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 883 transitions. [2023-08-30 10:09:07,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:07,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 883 transitions. [2023-08-30 10:09:07,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 147.16666666666666) internal successors, (883), 6 states have internal predecessors, (883), 0 states have call successors, (0), 0 states 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 10:09:07,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 300.0) internal successors, (2100), 7 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states 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 10:09:07,947 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 300.0) internal successors, (2100), 7 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states 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 10:09:07,947 INFO L175 Difference]: Start difference. First operand has 78 places, 93 transitions, 651 flow. Second operand 6 states and 883 transitions. [2023-08-30 10:09:07,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 166 transitions, 1382 flow [2023-08-30 10:09:07,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 166 transitions, 1310 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 10:09:07,983 INFO L231 Difference]: Finished difference. Result has 83 places, 107 transitions, 790 flow [2023-08-30 10:09:07,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=790, PETRI_PLACES=83, PETRI_TRANSITIONS=107} [2023-08-30 10:09:07,983 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 29 predicate places. [2023-08-30 10:09:07,983 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 107 transitions, 790 flow [2023-08-30 10:09:07,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.83333333333334) internal successors, (791), 6 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:07,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:07,984 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:07,992 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 10:09:08,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 10:09:08,189 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:08,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:08,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1391290297, now seen corresponding path program 1 times [2023-08-30 10:09:08,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:08,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442121241] [2023-08-30 10:09:08,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:08,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:08,314 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 10:09:08,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:08,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442121241] [2023-08-30 10:09:08,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442121241] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:09:08,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778819175] [2023-08-30 10:09:08,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:08,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:09:08,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:09:08,316 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:09:08,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 10:09:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:08,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 10:09:08,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:09:08,403 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:09:08,404 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 10:09:08,443 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 10:09:08,471 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 10:09:08,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:09:08,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:09:08,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778819175] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:08,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:09:08,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2023-08-30 10:09:08,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599345960] [2023-08-30 10:09:08,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:08,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:09:08,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:08,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:09:08,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-30 10:09:08,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 300 [2023-08-30 10:09:08,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 107 transitions, 790 flow. Second operand has 5 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 10:09:08,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:08,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 300 [2023-08-30 10:09:08,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:09,276 INFO L130 PetriNetUnfolder]: 3948/7086 cut-off events. [2023-08-30 10:09:09,277 INFO L131 PetriNetUnfolder]: For 14003/14003 co-relation queries the response was YES. [2023-08-30 10:09:09,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23045 conditions, 7086 events. 3948/7086 cut-off events. For 14003/14003 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 49102 event pairs, 2124 based on Foata normal form. 70/7031 useless extension candidates. Maximal degree in co-relation 23017. Up to 4600 conditions per place. [2023-08-30 10:09:09,321 INFO L137 encePairwiseOnDemand]: 291/300 looper letters, 149 selfloop transitions, 19 changer transitions 8/183 dead transitions. [2023-08-30 10:09:09,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 183 transitions, 1560 flow [2023-08-30 10:09:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:09:09,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:09:09,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 775 transitions. [2023-08-30 10:09:09,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2023-08-30 10:09:09,324 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 775 transitions. [2023-08-30 10:09:09,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 775 transitions. [2023-08-30 10:09:09,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:09,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 775 transitions. [2023-08-30 10:09:09,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states 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 10:09:09,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 300.0) internal successors, (1800), 6 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states 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 10:09:09,329 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 300.0) internal successors, (1800), 6 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states 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 10:09:09,329 INFO L175 Difference]: Start difference. First operand has 83 places, 107 transitions, 790 flow. Second operand 5 states and 775 transitions. [2023-08-30 10:09:09,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 183 transitions, 1560 flow [2023-08-30 10:09:09,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 183 transitions, 1542 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 10:09:09,362 INFO L231 Difference]: Finished difference. Result has 87 places, 107 transitions, 857 flow [2023-08-30 10:09:09,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=857, PETRI_PLACES=87, PETRI_TRANSITIONS=107} [2023-08-30 10:09:09,363 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 33 predicate places. [2023-08-30 10:09:09,363 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 107 transitions, 857 flow [2023-08-30 10:09:09,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 10:09:09,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:09,364 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:09,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 10:09:09,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 10:09:09,569 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:09,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:09,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1800948555, now seen corresponding path program 1 times [2023-08-30 10:09:09,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:09,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705195899] [2023-08-30 10:09:09,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:09,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:09:09,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:09,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705195899] [2023-08-30 10:09:09,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705195899] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:09:09,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835199083] [2023-08-30 10:09:09,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:09,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:09:09,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:09:09,721 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:09:09,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 10:09:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:09,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 10:09:09,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:09:09,828 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:09:09,828 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 10:09:09,862 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 10:09:09,898 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 10:09:09,957 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 10:09:09,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:09:09,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:09:10,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:09:10,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835199083] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:09:10,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:09:10,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-08-30 10:09:10,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397724626] [2023-08-30 10:09:10,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:09:10,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 10:09:10,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:10,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 10:09:10,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=130, Unknown=3, NotChecked=0, Total=182 [2023-08-30 10:09:10,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 300 [2023-08-30 10:09:10,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 107 transitions, 857 flow. Second operand has 14 states, 14 states have (on average 109.57142857142857) internal successors, (1534), 14 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states 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 10:09:10,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:10,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 300 [2023-08-30 10:09:10,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:11,645 INFO L130 PetriNetUnfolder]: 4565/8199 cut-off events. [2023-08-30 10:09:11,645 INFO L131 PetriNetUnfolder]: For 21380/21380 co-relation queries the response was YES. [2023-08-30 10:09:11,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27785 conditions, 8199 events. 4565/8199 cut-off events. For 21380/21380 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 58535 event pairs, 873 based on Foata normal form. 244/8314 useless extension candidates. Maximal degree in co-relation 27753. Up to 4087 conditions per place. [2023-08-30 10:09:11,683 INFO L137 encePairwiseOnDemand]: 284/300 looper letters, 235 selfloop transitions, 86 changer transitions 12/340 dead transitions. [2023-08-30 10:09:11,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 340 transitions, 2766 flow [2023-08-30 10:09:11,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 10:09:11,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 10:09:11,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1964 transitions. [2023-08-30 10:09:11,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4091666666666667 [2023-08-30 10:09:11,689 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1964 transitions. [2023-08-30 10:09:11,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1964 transitions. [2023-08-30 10:09:11,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:11,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1964 transitions. [2023-08-30 10:09:11,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 122.75) internal successors, (1964), 16 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states 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 10:09:11,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 300.0) internal successors, (5100), 17 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states 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 10:09:11,702 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 300.0) internal successors, (5100), 17 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states 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 10:09:11,702 INFO L175 Difference]: Start difference. First operand has 87 places, 107 transitions, 857 flow. Second operand 16 states and 1964 transitions. [2023-08-30 10:09:11,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 340 transitions, 2766 flow [2023-08-30 10:09:11,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 340 transitions, 2731 flow, removed 11 selfloop flow, removed 1 redundant places. [2023-08-30 10:09:11,805 INFO L231 Difference]: Finished difference. Result has 110 places, 162 transitions, 1745 flow [2023-08-30 10:09:11,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1745, PETRI_PLACES=110, PETRI_TRANSITIONS=162} [2023-08-30 10:09:11,806 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 56 predicate places. [2023-08-30 10:09:11,806 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 162 transitions, 1745 flow [2023-08-30 10:09:11,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 109.57142857142857) internal successors, (1534), 14 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states 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 10:09:11,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:11,818 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:11,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 10:09:12,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 10:09:12,019 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:12,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:12,020 INFO L85 PathProgramCache]: Analyzing trace with hash -959459201, now seen corresponding path program 1 times [2023-08-30 10:09:12,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:12,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499242038] [2023-08-30 10:09:12,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:12,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:12,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:09:12,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:12,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499242038] [2023-08-30 10:09:12,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499242038] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:12,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:12,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:09:12,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106078253] [2023-08-30 10:09:12,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:12,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:09:12,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:12,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:09:12,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:09:12,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 300 [2023-08-30 10:09:12,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 162 transitions, 1745 flow. Second operand has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 states 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 10:09:12,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:12,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 300 [2023-08-30 10:09:12,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:12,356 INFO L130 PetriNetUnfolder]: 693/1711 cut-off events. [2023-08-30 10:09:12,356 INFO L131 PetriNetUnfolder]: For 5966/5966 co-relation queries the response was YES. [2023-08-30 10:09:12,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6241 conditions, 1711 events. 693/1711 cut-off events. For 5966/5966 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 10952 event pairs, 199 based on Foata normal form. 195/1830 useless extension candidates. Maximal degree in co-relation 6199. Up to 1350 conditions per place. [2023-08-30 10:09:12,366 INFO L137 encePairwiseOnDemand]: 295/300 looper letters, 96 selfloop transitions, 5 changer transitions 5/113 dead transitions. [2023-08-30 10:09:12,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 113 transitions, 1172 flow [2023-08-30 10:09:12,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:09:12,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:09:12,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 604 transitions. [2023-08-30 10:09:12,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033333333333333 [2023-08-30 10:09:12,369 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 604 transitions. [2023-08-30 10:09:12,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 604 transitions. [2023-08-30 10:09:12,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:12,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 604 transitions. [2023-08-30 10:09:12,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 10:09:12,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states 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 10:09:12,373 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states 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 10:09:12,373 INFO L175 Difference]: Start difference. First operand has 110 places, 162 transitions, 1745 flow. Second operand 4 states and 604 transitions. [2023-08-30 10:09:12,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 113 transitions, 1172 flow [2023-08-30 10:09:12,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 113 transitions, 1029 flow, removed 45 selfloop flow, removed 6 redundant places. [2023-08-30 10:09:12,401 INFO L231 Difference]: Finished difference. Result has 104 places, 90 transitions, 679 flow [2023-08-30 10:09:12,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=679, PETRI_PLACES=104, PETRI_TRANSITIONS=90} [2023-08-30 10:09:12,402 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 50 predicate places. [2023-08-30 10:09:12,402 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 90 transitions, 679 flow [2023-08-30 10:09:12,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 states 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 10:09:12,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:12,403 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:12,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 10:09:12,403 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:12,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:12,404 INFO L85 PathProgramCache]: Analyzing trace with hash 74645783, now seen corresponding path program 1 times [2023-08-30 10:09:12,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:12,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099779065] [2023-08-30 10:09:12,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:12,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:12,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:09:12,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:12,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099779065] [2023-08-30 10:09:12,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099779065] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:12,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:12,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:09:12,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50376584] [2023-08-30 10:09:12,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:12,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:09:12,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:12,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:09:12,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:09:12,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 300 [2023-08-30 10:09:12,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 90 transitions, 679 flow. Second operand has 5 states, 5 states have (on average 137.4) internal successors, (687), 5 states have internal predecessors, (687), 0 states have call successors, (0), 0 states 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 10:09:12,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:12,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 300 [2023-08-30 10:09:12,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:12,877 INFO L130 PetriNetUnfolder]: 769/1880 cut-off events. [2023-08-30 10:09:12,877 INFO L131 PetriNetUnfolder]: For 4674/4674 co-relation queries the response was YES. [2023-08-30 10:09:12,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6411 conditions, 1880 events. 769/1880 cut-off events. For 4674/4674 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 12126 event pairs, 307 based on Foata normal form. 15/1811 useless extension candidates. Maximal degree in co-relation 6373. Up to 706 conditions per place. [2023-08-30 10:09:12,884 INFO L137 encePairwiseOnDemand]: 288/300 looper letters, 119 selfloop transitions, 36 changer transitions 13/175 dead transitions. [2023-08-30 10:09:12,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 175 transitions, 1412 flow [2023-08-30 10:09:12,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:09:12,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:09:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1063 transitions. [2023-08-30 10:09:12,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061904761904762 [2023-08-30 10:09:12,888 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1063 transitions. [2023-08-30 10:09:12,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1063 transitions. [2023-08-30 10:09:12,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:12,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1063 transitions. [2023-08-30 10:09:12,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 151.85714285714286) internal successors, (1063), 7 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states 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 10:09:12,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states 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 10:09:12,895 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states 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 10:09:12,895 INFO L175 Difference]: Start difference. First operand has 104 places, 90 transitions, 679 flow. Second operand 7 states and 1063 transitions. [2023-08-30 10:09:12,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 175 transitions, 1412 flow [2023-08-30 10:09:12,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 175 transitions, 1381 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-30 10:09:12,912 INFO L231 Difference]: Finished difference. Result has 108 places, 92 transitions, 783 flow [2023-08-30 10:09:12,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=783, PETRI_PLACES=108, PETRI_TRANSITIONS=92} [2023-08-30 10:09:12,912 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 54 predicate places. [2023-08-30 10:09:12,913 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 92 transitions, 783 flow [2023-08-30 10:09:12,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.4) internal successors, (687), 5 states have internal predecessors, (687), 0 states have call successors, (0), 0 states 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 10:09:12,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:12,913 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:12,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 10:09:12,914 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:12,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:12,914 INFO L85 PathProgramCache]: Analyzing trace with hash 232359539, now seen corresponding path program 1 times [2023-08-30 10:09:12,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:12,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796488231] [2023-08-30 10:09:12,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:12,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:13,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:09:13,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:13,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796488231] [2023-08-30 10:09:13,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796488231] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:13,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:13,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:09:13,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562919598] [2023-08-30 10:09:13,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:13,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:09:13,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:13,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:09:13,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:09:13,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 300 [2023-08-30 10:09:13,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 92 transitions, 783 flow. Second operand has 5 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 0 states have call successors, (0), 0 states 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 10:09:13,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:13,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 300 [2023-08-30 10:09:13,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:13,418 INFO L130 PetriNetUnfolder]: 753/1829 cut-off events. [2023-08-30 10:09:13,418 INFO L131 PetriNetUnfolder]: For 6116/6116 co-relation queries the response was YES. [2023-08-30 10:09:13,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6419 conditions, 1829 events. 753/1829 cut-off events. For 6116/6116 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 11618 event pairs, 261 based on Foata normal form. 15/1760 useless extension candidates. Maximal degree in co-relation 6379. Up to 794 conditions per place. [2023-08-30 10:09:13,424 INFO L137 encePairwiseOnDemand]: 287/300 looper letters, 111 selfloop transitions, 41 changer transitions 4/163 dead transitions. [2023-08-30 10:09:13,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 163 transitions, 1419 flow [2023-08-30 10:09:13,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:09:13,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:09:13,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1039 transitions. [2023-08-30 10:09:13,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49476190476190474 [2023-08-30 10:09:13,427 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1039 transitions. [2023-08-30 10:09:13,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1039 transitions. [2023-08-30 10:09:13,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:13,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1039 transitions. [2023-08-30 10:09:13,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.42857142857142) internal successors, (1039), 7 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states 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 10:09:13,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states 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 10:09:13,432 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states 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 10:09:13,433 INFO L175 Difference]: Start difference. First operand has 108 places, 92 transitions, 783 flow. Second operand 7 states and 1039 transitions. [2023-08-30 10:09:13,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 163 transitions, 1419 flow [2023-08-30 10:09:13,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 163 transitions, 1357 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-30 10:09:13,453 INFO L231 Difference]: Finished difference. Result has 115 places, 101 transitions, 966 flow [2023-08-30 10:09:13,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=966, PETRI_PLACES=115, PETRI_TRANSITIONS=101} [2023-08-30 10:09:13,454 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 61 predicate places. [2023-08-30 10:09:13,454 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 101 transitions, 966 flow [2023-08-30 10:09:13,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 0 states have call successors, (0), 0 states 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 10:09:13,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:13,455 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:13,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 10:09:13,455 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:13,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:13,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1102608112, now seen corresponding path program 1 times [2023-08-30 10:09:13,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:13,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575367125] [2023-08-30 10:09:13,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:13,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:13,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:09:13,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:13,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575367125] [2023-08-30 10:09:13,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575367125] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:09:13,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139799065] [2023-08-30 10:09:13,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:13,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:09:13,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:09:13,641 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:09:13,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 10:09:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:13,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 10:09:13,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:09:13,743 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:09:13,744 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 10:09:13,792 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 10:09:13,848 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 30 treesize of output 18 [2023-08-30 10:09:13,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:09:13,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:09:13,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:09:13,923 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_449 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_449) c_~g1~0.base) c_~g1~0.offset) 2147483650))) is different from false [2023-08-30 10:09:13,941 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_449 (Array Int Int)) (v_ArrVal_447 Int)) (or (< (+ v_ArrVal_447 1) |c_t_funThread1of2ForFork0_#t~mem8|) (< 0 (+ 2147483650 (select (select (store (store |c_#memory_int| c_~g1~0.base (store (select |c_#memory_int| c_~g1~0.base) c_~g1~0.offset v_ArrVal_447)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_449) c_~g1~0.base) c_~g1~0.offset))))) is different from false [2023-08-30 10:09:13,951 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_449 (Array Int Int)) (v_ArrVal_447 Int)) (let ((.cse0 (select |c_#memory_int| c_~g1~0.base))) (or (< (+ v_ArrVal_447 1) (select .cse0 c_~g1~0.offset)) (< 0 (+ 2147483650 (select (select (store (store |c_#memory_int| c_~g1~0.base (store .cse0 c_~g1~0.offset v_ArrVal_447)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_449) c_~g1~0.base) c_~g1~0.offset)))))) is different from false [2023-08-30 10:09:13,973 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:09:13,974 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 20 treesize of output 21 [2023-08-30 10:09:13,978 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 33 treesize of output 25 [2023-08-30 10:09:14,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:09:14,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139799065] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:09:14,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:09:14,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-30 10:09:14,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488575030] [2023-08-30 10:09:14,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:09:14,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 10:09:14,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:14,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 10:09:14,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=208, Unknown=3, NotChecked=96, Total=380 [2023-08-30 10:09:14,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 300 [2023-08-30 10:09:14,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 101 transitions, 966 flow. Second operand has 20 states, 20 states have (on average 107.7) internal successors, (2154), 20 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states 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 10:09:14,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:14,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 300 [2023-08-30 10:09:14,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:14,770 INFO L130 PetriNetUnfolder]: 740/1835 cut-off events. [2023-08-30 10:09:14,770 INFO L131 PetriNetUnfolder]: For 7501/7501 co-relation queries the response was YES. [2023-08-30 10:09:14,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6671 conditions, 1835 events. 740/1835 cut-off events. For 7501/7501 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 11754 event pairs, 186 based on Foata normal form. 15/1768 useless extension candidates. Maximal degree in co-relation 6626. Up to 438 conditions per place. [2023-08-30 10:09:14,778 INFO L137 encePairwiseOnDemand]: 286/300 looper letters, 184 selfloop transitions, 57 changer transitions 18/266 dead transitions. [2023-08-30 10:09:14,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 266 transitions, 2289 flow [2023-08-30 10:09:14,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 10:09:14,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 10:09:14,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1990 transitions. [2023-08-30 10:09:14,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39019607843137255 [2023-08-30 10:09:14,782 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1990 transitions. [2023-08-30 10:09:14,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1990 transitions. [2023-08-30 10:09:14,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:14,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1990 transitions. [2023-08-30 10:09:14,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 117.05882352941177) internal successors, (1990), 17 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states 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 10:09:14,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 300.0) internal successors, (5400), 18 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states 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 10:09:14,793 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 300.0) internal successors, (5400), 18 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states 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 10:09:14,793 INFO L175 Difference]: Start difference. First operand has 115 places, 101 transitions, 966 flow. Second operand 17 states and 1990 transitions. [2023-08-30 10:09:14,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 266 transitions, 2289 flow [2023-08-30 10:09:14,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 266 transitions, 2277 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-30 10:09:14,824 INFO L231 Difference]: Finished difference. Result has 135 places, 122 transitions, 1302 flow [2023-08-30 10:09:14,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1302, PETRI_PLACES=135, PETRI_TRANSITIONS=122} [2023-08-30 10:09:14,824 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 81 predicate places. [2023-08-30 10:09:14,825 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 122 transitions, 1302 flow [2023-08-30 10:09:14,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 107.7) internal successors, (2154), 20 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states 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 10:09:14,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:14,825 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:14,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 10:09:15,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:09:15,031 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:15,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:15,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1102608069, now seen corresponding path program 2 times [2023-08-30 10:09:15,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:15,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107377314] [2023-08-30 10:09:15,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:15,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:15,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:09:15,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:15,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107377314] [2023-08-30 10:09:15,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107377314] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:09:15,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593340273] [2023-08-30 10:09:15,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:09:15,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:09:15,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:09:15,229 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:09:15,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 10:09:15,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:09:15,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:09:15,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 10:09:15,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:09:15,339 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:09:15,340 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 10:09:15,372 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 10:09:15,421 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 10:09:15,453 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 10:09:15,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:09:15,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:09:15,494 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_506 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_506) c_~g1~0.base) c_~g1~0.offset) 2147483647)) is different from false [2023-08-30 10:09:15,513 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_506 (Array Int Int)) (v_ArrVal_505 Int)) (or (< |c_t_funThread1of2ForFork0_#t~mem8| (+ v_ArrVal_505 1)) (< (select (select (store (store |c_#memory_int| c_~g1~0.base (store (select |c_#memory_int| c_~g1~0.base) c_~g1~0.offset v_ArrVal_505)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_506) c_~g1~0.base) c_~g1~0.offset) 2147483647))) is different from false [2023-08-30 10:09:15,524 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_506 (Array Int Int)) (v_ArrVal_505 Int)) (let ((.cse0 (select |c_#memory_int| c_~g1~0.base))) (or (< (select .cse0 c_~g1~0.offset) (+ v_ArrVal_505 1)) (< (select (select (store (store |c_#memory_int| c_~g1~0.base (store .cse0 c_~g1~0.offset v_ArrVal_505)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_506) c_~g1~0.base) c_~g1~0.offset) 2147483647)))) is different from false [2023-08-30 10:09:15,558 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:09:15,559 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 10:09:15,561 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 29 treesize of output 21 [2023-08-30 10:09:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:09:15,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593340273] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:09:15,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:09:15,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2023-08-30 10:09:15,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539056141] [2023-08-30 10:09:15,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:09:15,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 10:09:15,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:15,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 10:09:15,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=160, Unknown=3, NotChecked=84, Total=306 [2023-08-30 10:09:15,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 300 [2023-08-30 10:09:15,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 122 transitions, 1302 flow. Second operand has 18 states, 18 states have (on average 108.0) internal successors, (1944), 18 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states 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 10:09:15,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:15,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 300 [2023-08-30 10:09:15,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:16,278 INFO L130 PetriNetUnfolder]: 691/1751 cut-off events. [2023-08-30 10:09:16,278 INFO L131 PetriNetUnfolder]: For 8781/8781 co-relation queries the response was YES. [2023-08-30 10:09:16,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6916 conditions, 1751 events. 691/1751 cut-off events. For 8781/8781 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 11196 event pairs, 169 based on Foata normal form. 30/1703 useless extension candidates. Maximal degree in co-relation 6864. Up to 490 conditions per place. [2023-08-30 10:09:16,287 INFO L137 encePairwiseOnDemand]: 287/300 looper letters, 176 selfloop transitions, 49 changer transitions 12/244 dead transitions. [2023-08-30 10:09:16,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 244 transitions, 2187 flow [2023-08-30 10:09:16,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 10:09:16,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 10:09:16,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1871 transitions. [2023-08-30 10:09:16,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38979166666666665 [2023-08-30 10:09:16,290 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1871 transitions. [2023-08-30 10:09:16,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1871 transitions. [2023-08-30 10:09:16,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:16,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1871 transitions. [2023-08-30 10:09:16,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 116.9375) internal successors, (1871), 16 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states 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 10:09:16,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 300.0) internal successors, (5100), 17 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states 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 10:09:16,299 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 300.0) internal successors, (5100), 17 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states 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 10:09:16,299 INFO L175 Difference]: Start difference. First operand has 135 places, 122 transitions, 1302 flow. Second operand 16 states and 1871 transitions. [2023-08-30 10:09:16,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 244 transitions, 2187 flow [2023-08-30 10:09:16,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 244 transitions, 2064 flow, removed 36 selfloop flow, removed 10 redundant places. [2023-08-30 10:09:16,333 INFO L231 Difference]: Finished difference. Result has 139 places, 117 transitions, 1213 flow [2023-08-30 10:09:16,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1213, PETRI_PLACES=139, PETRI_TRANSITIONS=117} [2023-08-30 10:09:16,334 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 85 predicate places. [2023-08-30 10:09:16,334 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 117 transitions, 1213 flow [2023-08-30 10:09:16,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 108.0) internal successors, (1944), 18 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states 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 10:09:16,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:16,335 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:16,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 10:09:16,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-30 10:09:16,540 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:16,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:16,540 INFO L85 PathProgramCache]: Analyzing trace with hash 232359492, now seen corresponding path program 1 times [2023-08-30 10:09:16,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:16,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964503700] [2023-08-30 10:09:16,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:16,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:09:16,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:16,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964503700] [2023-08-30 10:09:16,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964503700] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:16,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:16,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:09:16,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194957284] [2023-08-30 10:09:16,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:16,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:09:16,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:16,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:09:16,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:09:16,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 300 [2023-08-30 10:09:16,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 117 transitions, 1213 flow. Second operand has 4 states, 4 states have (on average 135.25) internal successors, (541), 4 states have internal predecessors, (541), 0 states have call successors, (0), 0 states 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 10:09:16,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:16,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 300 [2023-08-30 10:09:16,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:16,946 INFO L130 PetriNetUnfolder]: 676/1718 cut-off events. [2023-08-30 10:09:16,946 INFO L131 PetriNetUnfolder]: For 7854/7854 co-relation queries the response was YES. [2023-08-30 10:09:16,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6589 conditions, 1718 events. 676/1718 cut-off events. For 7854/7854 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 10968 event pairs, 342 based on Foata normal form. 16/1656 useless extension candidates. Maximal degree in co-relation 6543. Up to 814 conditions per place. [2023-08-30 10:09:16,957 INFO L137 encePairwiseOnDemand]: 290/300 looper letters, 114 selfloop transitions, 27 changer transitions 2/150 dead transitions. [2023-08-30 10:09:16,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 150 transitions, 1610 flow [2023-08-30 10:09:16,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:09:16,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:09:16,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 735 transitions. [2023-08-30 10:09:16,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49 [2023-08-30 10:09:16,959 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 735 transitions. [2023-08-30 10:09:16,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 735 transitions. [2023-08-30 10:09:16,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:16,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 735 transitions. [2023-08-30 10:09:16,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 10:09:16,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 300.0) internal successors, (1800), 6 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states 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 10:09:16,962 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 300.0) internal successors, (1800), 6 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states 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 10:09:16,962 INFO L175 Difference]: Start difference. First operand has 139 places, 117 transitions, 1213 flow. Second operand 5 states and 735 transitions. [2023-08-30 10:09:16,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 150 transitions, 1610 flow [2023-08-30 10:09:16,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 150 transitions, 1473 flow, removed 13 selfloop flow, removed 12 redundant places. [2023-08-30 10:09:16,996 INFO L231 Difference]: Finished difference. Result has 133 places, 116 transitions, 1167 flow [2023-08-30 10:09:16,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1167, PETRI_PLACES=133, PETRI_TRANSITIONS=116} [2023-08-30 10:09:16,997 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 79 predicate places. [2023-08-30 10:09:16,997 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 116 transitions, 1167 flow [2023-08-30 10:09:16,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.25) internal successors, (541), 4 states have internal predecessors, (541), 0 states have call successors, (0), 0 states 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 10:09:16,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:16,997 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:16,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 10:09:16,998 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:16,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:16,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1396164772, now seen corresponding path program 2 times [2023-08-30 10:09:16,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:16,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073215046] [2023-08-30 10:09:16,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:16,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:17,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:09:17,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:17,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073215046] [2023-08-30 10:09:17,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073215046] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:09:17,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616944388] [2023-08-30 10:09:17,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:09:17,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:09:17,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:09:17,203 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:09:17,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 10:09:17,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:09:17,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:09:17,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 10:09:17,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:09:17,320 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:09:17,320 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 10:09:17,366 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 10:09:17,388 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 10:09:17,423 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 10:09:17,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:09:17,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:09:17,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616944388] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:17,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:09:17,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-30 10:09:17,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429741600] [2023-08-30 10:09:17,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:17,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:09:17,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:17,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:09:17,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:09:17,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 300 [2023-08-30 10:09:17,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 116 transitions, 1167 flow. Second operand has 7 states, 7 states have (on average 132.57142857142858) internal successors, (928), 7 states have internal predecessors, (928), 0 states have call successors, (0), 0 states 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 10:09:17,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:17,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 300 [2023-08-30 10:09:17,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:17,925 INFO L130 PetriNetUnfolder]: 675/1715 cut-off events. [2023-08-30 10:09:17,926 INFO L131 PetriNetUnfolder]: For 7359/7359 co-relation queries the response was YES. [2023-08-30 10:09:17,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6546 conditions, 1715 events. 675/1715 cut-off events. For 7359/7359 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 11016 event pairs, 330 based on Foata normal form. 2/1640 useless extension candidates. Maximal degree in co-relation 6501. Up to 891 conditions per place. [2023-08-30 10:09:17,936 INFO L137 encePairwiseOnDemand]: 291/300 looper letters, 115 selfloop transitions, 40 changer transitions 2/164 dead transitions. [2023-08-30 10:09:17,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 164 transitions, 1617 flow [2023-08-30 10:09:17,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:09:17,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:09:17,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1405 transitions. [2023-08-30 10:09:17,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4683333333333333 [2023-08-30 10:09:17,938 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1405 transitions. [2023-08-30 10:09:17,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1405 transitions. [2023-08-30 10:09:17,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:17,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1405 transitions. [2023-08-30 10:09:17,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 140.5) internal successors, (1405), 10 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states 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 10:09:17,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 300.0) internal successors, (3300), 11 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states 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 10:09:17,944 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 300.0) internal successors, (3300), 11 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states 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 10:09:17,944 INFO L175 Difference]: Start difference. First operand has 133 places, 116 transitions, 1167 flow. Second operand 10 states and 1405 transitions. [2023-08-30 10:09:17,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 164 transitions, 1617 flow [2023-08-30 10:09:17,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 164 transitions, 1521 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-08-30 10:09:17,968 INFO L231 Difference]: Finished difference. Result has 133 places, 114 transitions, 1118 flow [2023-08-30 10:09:17,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1118, PETRI_PLACES=133, PETRI_TRANSITIONS=114} [2023-08-30 10:09:17,969 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 79 predicate places. [2023-08-30 10:09:17,969 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 114 transitions, 1118 flow [2023-08-30 10:09:17,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 132.57142857142858) internal successors, (928), 7 states have internal predecessors, (928), 0 states have call successors, (0), 0 states 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 10:09:17,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:17,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:17,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 10:09:18,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-30 10:09:18,175 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:18,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:18,175 INFO L85 PathProgramCache]: Analyzing trace with hash 242129289, now seen corresponding path program 1 times [2023-08-30 10:09:18,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:18,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651450447] [2023-08-30 10:09:18,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:18,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:18,215 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 10:09:18,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:18,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651450447] [2023-08-30 10:09:18,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651450447] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:09:18,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948764820] [2023-08-30 10:09:18,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:18,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:09:18,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:09:18,221 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:09:18,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 10:09:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:18,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:09:18,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:09:18,336 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 10:09:18,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:09:18,355 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 10:09:18,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948764820] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:09:18,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:09:18,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:09:18,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037523317] [2023-08-30 10:09:18,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:09:18,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:09:18,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:18,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:09:18,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:09:18,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 300 [2023-08-30 10:09:18,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 114 transitions, 1118 flow. Second operand has 7 states, 7 states have (on average 142.42857142857142) internal successors, (997), 7 states have internal predecessors, (997), 0 states have call successors, (0), 0 states 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 10:09:18,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:18,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 300 [2023-08-30 10:09:18,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:18,484 INFO L130 PetriNetUnfolder]: 139/450 cut-off events. [2023-08-30 10:09:18,484 INFO L131 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2023-08-30 10:09:18,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2142 conditions, 450 events. 139/450 cut-off events. For 2304/2304 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2227 event pairs, 10 based on Foata normal form. 67/517 useless extension candidates. Maximal degree in co-relation 2113. Up to 247 conditions per place. [2023-08-30 10:09:18,486 INFO L137 encePairwiseOnDemand]: 297/300 looper letters, 102 selfloop transitions, 3 changer transitions 11/122 dead transitions. [2023-08-30 10:09:18,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 122 transitions, 1481 flow [2023-08-30 10:09:18,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:09:18,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:09:18,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 750 transitions. [2023-08-30 10:09:18,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-30 10:09:18,487 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 750 transitions. [2023-08-30 10:09:18,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 750 transitions. [2023-08-30 10:09:18,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:18,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 750 transitions. [2023-08-30 10:09:18,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states 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 10:09:18,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 300.0) internal successors, (1800), 6 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states 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 10:09:18,491 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 300.0) internal successors, (1800), 6 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states 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 10:09:18,491 INFO L175 Difference]: Start difference. First operand has 133 places, 114 transitions, 1118 flow. Second operand 5 states and 750 transitions. [2023-08-30 10:09:18,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 122 transitions, 1481 flow [2023-08-30 10:09:18,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 122 transitions, 1305 flow, removed 1 selfloop flow, removed 17 redundant places. [2023-08-30 10:09:18,500 INFO L231 Difference]: Finished difference. Result has 95 places, 68 transitions, 617 flow [2023-08-30 10:09:18,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=617, PETRI_PLACES=95, PETRI_TRANSITIONS=68} [2023-08-30 10:09:18,501 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 41 predicate places. [2023-08-30 10:09:18,501 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 68 transitions, 617 flow [2023-08-30 10:09:18,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 142.42857142857142) internal successors, (997), 7 states have internal predecessors, (997), 0 states have call successors, (0), 0 states 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 10:09:18,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:18,502 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:18,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 10:09:18,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-30 10:09:18,706 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:18,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:18,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1270236693, now seen corresponding path program 2 times [2023-08-30 10:09:18,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:18,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159277888] [2023-08-30 10:09:18,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:18,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:09:18,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:18,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159277888] [2023-08-30 10:09:18,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159277888] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:09:18,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982031398] [2023-08-30 10:09:18,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:09:18,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:09:18,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:09:18,933 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:09:18,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 10:09:19,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:09:19,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:09:19,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 10:09:19,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:09:19,066 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:09:19,066 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 10:09:19,123 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 10:09:19,178 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 30 treesize of output 18 [2023-08-30 10:09:19,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:09:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:09:19,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:09:19,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982031398] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:19,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:09:19,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 12 [2023-08-30 10:09:19,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101225962] [2023-08-30 10:09:19,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:19,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:09:19,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:19,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:09:19,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-08-30 10:09:19,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 300 [2023-08-30 10:09:19,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 68 transitions, 617 flow. Second operand has 8 states, 8 states have (on average 128.375) internal successors, (1027), 8 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states 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 10:09:19,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:19,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 300 [2023-08-30 10:09:19,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:19,514 INFO L130 PetriNetUnfolder]: 125/410 cut-off events. [2023-08-30 10:09:19,514 INFO L131 PetriNetUnfolder]: For 1831/1831 co-relation queries the response was YES. [2023-08-30 10:09:19,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 410 events. 125/410 cut-off events. For 1831/1831 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2109 event pairs, 68 based on Foata normal form. 1/411 useless extension candidates. Maximal degree in co-relation 1762. Up to 191 conditions per place. [2023-08-30 10:09:19,517 INFO L137 encePairwiseOnDemand]: 291/300 looper letters, 49 selfloop transitions, 22 changer transitions 1/78 dead transitions. [2023-08-30 10:09:19,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 78 transitions, 839 flow [2023-08-30 10:09:19,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:09:19,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:09:19,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 921 transitions. [2023-08-30 10:09:19,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43857142857142856 [2023-08-30 10:09:19,519 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 921 transitions. [2023-08-30 10:09:19,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 921 transitions. [2023-08-30 10:09:19,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:19,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 921 transitions. [2023-08-30 10:09:19,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 131.57142857142858) internal successors, (921), 7 states have internal predecessors, (921), 0 states have call successors, (0), 0 states 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 10:09:19,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states 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 10:09:19,523 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states 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 10:09:19,524 INFO L175 Difference]: Start difference. First operand has 95 places, 68 transitions, 617 flow. Second operand 7 states and 921 transitions. [2023-08-30 10:09:19,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 78 transitions, 839 flow [2023-08-30 10:09:19,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 78 transitions, 802 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-30 10:09:19,530 INFO L231 Difference]: Finished difference. Result has 93 places, 67 transitions, 623 flow [2023-08-30 10:09:19,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=623, PETRI_PLACES=93, PETRI_TRANSITIONS=67} [2023-08-30 10:09:19,531 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 39 predicate places. [2023-08-30 10:09:19,531 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 67 transitions, 623 flow [2023-08-30 10:09:19,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 128.375) internal successors, (1027), 8 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states 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 10:09:19,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:19,532 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:19,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 10:09:19,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-30 10:09:19,737 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:19,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:19,737 INFO L85 PathProgramCache]: Analyzing trace with hash -808011544, now seen corresponding path program 1 times [2023-08-30 10:09:19,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:19,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067557744] [2023-08-30 10:09:19,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:19,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:20,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:09:20,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:20,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067557744] [2023-08-30 10:09:20,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067557744] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:09:20,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349002314] [2023-08-30 10:09:20,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:20,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:09:20,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:09:20,014 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:09:20,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 10:09:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:20,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 10:09:20,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:09:20,139 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:09:20,140 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 10:09:20,188 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 10:09:20,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:09:20,268 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 30 treesize of output 18 [2023-08-30 10:09:20,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:09:20,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:09:20,338 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_769 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_769) c_~g1~0.base) c_~g1~0.offset)))) is different from false [2023-08-30 10:09:20,350 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:09:20,351 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 20 treesize of output 21 [2023-08-30 10:09:20,353 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 35 treesize of output 27 [2023-08-30 10:09:20,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:09:20,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349002314] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:09:20,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:09:20,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 18 [2023-08-30 10:09:20,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430119159] [2023-08-30 10:09:20,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:09:20,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 10:09:20,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:20,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 10:09:20,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=272, Unknown=1, NotChecked=34, Total=380 [2023-08-30 10:09:20,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 300 [2023-08-30 10:09:20,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 67 transitions, 623 flow. Second operand has 20 states, 20 states have (on average 102.15) internal successors, (2043), 20 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states 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 10:09:20,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:20,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 300 [2023-08-30 10:09:20,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:20,758 INFO L130 PetriNetUnfolder]: 123/401 cut-off events. [2023-08-30 10:09:20,758 INFO L131 PetriNetUnfolder]: For 1767/1767 co-relation queries the response was YES. [2023-08-30 10:09:20,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1705 conditions, 401 events. 123/401 cut-off events. For 1767/1767 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2039 event pairs, 34 based on Foata normal form. 4/405 useless extension candidates. Maximal degree in co-relation 1685. Up to 105 conditions per place. [2023-08-30 10:09:20,759 INFO L137 encePairwiseOnDemand]: 290/300 looper letters, 34 selfloop transitions, 6 changer transitions 48/94 dead transitions. [2023-08-30 10:09:20,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 94 transitions, 964 flow [2023-08-30 10:09:20,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 10:09:20,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 10:09:20,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1144 transitions. [2023-08-30 10:09:20,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2023-08-30 10:09:20,762 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1144 transitions. [2023-08-30 10:09:20,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1144 transitions. [2023-08-30 10:09:20,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:20,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1144 transitions. [2023-08-30 10:09:20,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 10:09:20,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 300.0) internal successors, (3600), 12 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states 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 10:09:20,768 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 300.0) internal successors, (3600), 12 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states 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 10:09:20,768 INFO L175 Difference]: Start difference. First operand has 93 places, 67 transitions, 623 flow. Second operand 11 states and 1144 transitions. [2023-08-30 10:09:20,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 94 transitions, 964 flow [2023-08-30 10:09:20,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 94 transitions, 915 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-30 10:09:20,774 INFO L231 Difference]: Finished difference. Result has 93 places, 42 transitions, 329 flow [2023-08-30 10:09:20,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=329, PETRI_PLACES=93, PETRI_TRANSITIONS=42} [2023-08-30 10:09:20,774 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 39 predicate places. [2023-08-30 10:09:20,774 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 42 transitions, 329 flow [2023-08-30 10:09:20,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 102.15) internal successors, (2043), 20 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states 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 10:09:20,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:20,775 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:20,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 10:09:20,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-30 10:09:20,980 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:20,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:20,981 INFO L85 PathProgramCache]: Analyzing trace with hash -554711501, now seen corresponding path program 1 times [2023-08-30 10:09:20,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:20,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307976186] [2023-08-30 10:09:20,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:20,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:09:21,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:21,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307976186] [2023-08-30 10:09:21,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307976186] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:21,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:21,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:09:21,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614331297] [2023-08-30 10:09:21,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:21,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:09:21,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:21,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:09:21,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:09:21,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 300 [2023-08-30 10:09:21,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 42 transitions, 329 flow. Second operand has 6 states, 6 states have (on average 130.33333333333334) internal successors, (782), 6 states have internal predecessors, (782), 0 states have call successors, (0), 0 states 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 10:09:21,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:21,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 300 [2023-08-30 10:09:21,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:21,318 INFO L130 PetriNetUnfolder]: 37/154 cut-off events. [2023-08-30 10:09:21,318 INFO L131 PetriNetUnfolder]: For 446/446 co-relation queries the response was YES. [2023-08-30 10:09:21,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 154 events. 37/154 cut-off events. For 446/446 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 513 event pairs, 19 based on Foata normal form. 3/157 useless extension candidates. Maximal degree in co-relation 575. Up to 71 conditions per place. [2023-08-30 10:09:21,319 INFO L137 encePairwiseOnDemand]: 291/300 looper letters, 27 selfloop transitions, 14 changer transitions 9/56 dead transitions. [2023-08-30 10:09:21,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 56 transitions, 515 flow [2023-08-30 10:09:21,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:09:21,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:09:21,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1313 transitions. [2023-08-30 10:09:21,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43766666666666665 [2023-08-30 10:09:21,321 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1313 transitions. [2023-08-30 10:09:21,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1313 transitions. [2023-08-30 10:09:21,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:21,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1313 transitions. [2023-08-30 10:09:21,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 131.3) internal successors, (1313), 10 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states 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 10:09:21,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 300.0) internal successors, (3300), 11 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states 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 10:09:21,327 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 300.0) internal successors, (3300), 11 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states 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 10:09:21,327 INFO L175 Difference]: Start difference. First operand has 93 places, 42 transitions, 329 flow. Second operand 10 states and 1313 transitions. [2023-08-30 10:09:21,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 56 transitions, 515 flow [2023-08-30 10:09:21,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 56 transitions, 418 flow, removed 7 selfloop flow, removed 15 redundant places. [2023-08-30 10:09:21,330 INFO L231 Difference]: Finished difference. Result has 70 places, 38 transitions, 250 flow [2023-08-30 10:09:21,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=250, PETRI_PLACES=70, PETRI_TRANSITIONS=38} [2023-08-30 10:09:21,330 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2023-08-30 10:09:21,331 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 38 transitions, 250 flow [2023-08-30 10:09:21,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 130.33333333333334) internal successors, (782), 6 states have internal predecessors, (782), 0 states have call successors, (0), 0 states 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 10:09:21,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:21,331 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:21,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 10:09:21,332 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:21,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:21,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1448459582, now seen corresponding path program 2 times [2023-08-30 10:09:21,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:21,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928064245] [2023-08-30 10:09:21,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:21,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:09:21,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:21,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928064245] [2023-08-30 10:09:21,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928064245] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:09:21,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789995576] [2023-08-30 10:09:21,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:09:21,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:09:21,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:09:21,621 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:09:21,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 10:09:21,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:09:21,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:09:21,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 10:09:21,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:09:21,766 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:09:21,766 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 10:09:21,833 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 10:09:21,903 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 30 treesize of output 18 [2023-08-30 10:09:21,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:09:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:09:21,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:09:21,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789995576] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:21,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:09:21,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2023-08-30 10:09:21,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184076647] [2023-08-30 10:09:21,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:21,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:09:21,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:21,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:09:21,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-08-30 10:09:22,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 300 [2023-08-30 10:09:22,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 38 transitions, 250 flow. Second operand has 8 states, 8 states have (on average 127.625) internal successors, (1021), 8 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states 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 10:09:22,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:22,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 300 [2023-08-30 10:09:22,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:22,253 INFO L130 PetriNetUnfolder]: 32/133 cut-off events. [2023-08-30 10:09:22,254 INFO L131 PetriNetUnfolder]: For 238/238 co-relation queries the response was YES. [2023-08-30 10:09:22,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 133 events. 32/133 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 395 event pairs, 21 based on Foata normal form. 2/135 useless extension candidates. Maximal degree in co-relation 457. Up to 58 conditions per place. [2023-08-30 10:09:22,254 INFO L137 encePairwiseOnDemand]: 292/300 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2023-08-30 10:09:22,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 43 transitions, 338 flow [2023-08-30 10:09:22,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 10:09:22,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 10:09:22,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1029 transitions. [2023-08-30 10:09:22,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42875 [2023-08-30 10:09:22,257 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1029 transitions. [2023-08-30 10:09:22,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1029 transitions. [2023-08-30 10:09:22,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:22,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1029 transitions. [2023-08-30 10:09:22,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.625) internal successors, (1029), 8 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states 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 10:09:22,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 300.0) internal successors, (2700), 9 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states 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 10:09:22,262 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 300.0) internal successors, (2700), 9 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states 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 10:09:22,263 INFO L175 Difference]: Start difference. First operand has 70 places, 38 transitions, 250 flow. Second operand 8 states and 1029 transitions. [2023-08-30 10:09:22,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 43 transitions, 338 flow [2023-08-30 10:09:22,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 43 transitions, 266 flow, removed 9 selfloop flow, removed 15 redundant places. [2023-08-30 10:09:22,265 INFO L231 Difference]: Finished difference. Result has 59 places, 0 transitions, 0 flow [2023-08-30 10:09:22,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=59, PETRI_TRANSITIONS=0} [2023-08-30 10:09:22,270 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2023-08-30 10:09:22,270 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 0 transitions, 0 flow [2023-08-30 10:09:22,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 127.625) internal successors, (1021), 8 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states 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 10:09:22,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-30 10:09:22,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-30 10:09:22,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-30 10:09:22,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-30 10:09:22,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-30 10:09:22,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-30 10:09:22,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-08-30 10:09:22,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-08-30 10:09:22,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-08-30 10:09:22,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-08-30 10:09:22,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-30 10:09:22,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-30 10:09:22,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-30 10:09:22,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-30 10:09:22,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-30 10:09:22,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-30 10:09:22,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 10:09:22,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-30 10:09:22,478 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:22,478 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 (1/2) [2023-08-30 10:09:22,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 165 transitions, 348 flow [2023-08-30 10:09:22,506 INFO L130 PetriNetUnfolder]: 31/263 cut-off events. [2023-08-30 10:09:22,506 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:09:22,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 263 events. 31/263 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 798 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 156. Up to 9 conditions per place. [2023-08-30 10:09:22,508 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 165 transitions, 348 flow [2023-08-30 10:09:22,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 165 transitions, 348 flow [2023-08-30 10:09:22,509 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:09:22,509 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 165 transitions, 348 flow [2023-08-30 10:09:22,509 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 165 transitions, 348 flow [2023-08-30 10:09:22,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 165 transitions, 348 flow [2023-08-30 10:09:22,528 INFO L130 PetriNetUnfolder]: 31/263 cut-off events. [2023-08-30 10:09:22,529 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:09:22,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 263 events. 31/263 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 798 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 156. Up to 9 conditions per place. [2023-08-30 10:09:22,536 INFO L119 LiptonReduction]: Number of co-enabled transitions 11280 [2023-08-30 10:09:25,432 INFO L134 LiptonReduction]: Checked pairs total: 23302 [2023-08-30 10:09:25,432 INFO L136 LiptonReduction]: Total number of compositions: 134 [2023-08-30 10:09:25,433 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:09:25,434 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;@41c139cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:09:25,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:09:25,438 INFO L130 PetriNetUnfolder]: 10/60 cut-off events. [2023-08-30 10:09:25,439 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 10:09:25,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:25,439 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 10:09:25,439 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:09:25,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:25,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1501289639, now seen corresponding path program 1 times [2023-08-30 10:09:25,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:25,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687103030] [2023-08-30 10:09:25,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:25,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:09:25,465 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:09:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:09:25,480 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:09:25,480 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:09:25,480 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:09:25,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 10:09:25,481 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:09:25,482 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:09:25,482 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:09:25,482 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 10:09:25,509 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 10:09:25,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 207 transitions, 444 flow [2023-08-30 10:09:25,552 INFO L130 PetriNetUnfolder]: 50/411 cut-off events. [2023-08-30 10:09:25,552 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:09:25,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 411 events. 50/411 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1414 event pairs, 1 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 271. Up to 16 conditions per place. [2023-08-30 10:09:25,555 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 207 transitions, 444 flow [2023-08-30 10:09:25,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 207 transitions, 444 flow [2023-08-30 10:09:25,560 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:09:25,560 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 207 transitions, 444 flow [2023-08-30 10:09:25,560 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 207 transitions, 444 flow [2023-08-30 10:09:25,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 207 transitions, 444 flow [2023-08-30 10:09:25,597 INFO L130 PetriNetUnfolder]: 50/411 cut-off events. [2023-08-30 10:09:25,598 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:09:25,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 411 events. 50/411 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1414 event pairs, 1 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 271. Up to 16 conditions per place. [2023-08-30 10:09:25,614 INFO L119 LiptonReduction]: Number of co-enabled transitions 22080 [2023-08-30 10:09:28,518 INFO L134 LiptonReduction]: Checked pairs total: 49904 [2023-08-30 10:09:28,518 INFO L136 LiptonReduction]: Total number of compositions: 170 [2023-08-30 10:09:28,520 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:09:28,520 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;@41c139cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:09:28,520 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 10:09:28,522 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-08-30 10:09:28,522 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:09:28,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:28,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:09:28,523 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:09:28,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:28,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1402025676, now seen corresponding path program 1 times [2023-08-30 10:09:28,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:28,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875912699] [2023-08-30 10:09:28,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:28,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:28,545 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 10:09:28,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:28,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875912699] [2023-08-30 10:09:28,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875912699] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:28,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:28,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:09:28,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141340309] [2023-08-30 10:09:28,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:28,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:09:28,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:28,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:09:28,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:09:28,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 377 [2023-08-30 10:09:28,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 88 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 10:09:28,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:28,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 377 [2023-08-30 10:09:28,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:35,768 INFO L130 PetriNetUnfolder]: 97896/138669 cut-off events. [2023-08-30 10:09:35,768 INFO L131 PetriNetUnfolder]: For 2669/2669 co-relation queries the response was YES. [2023-08-30 10:09:35,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276351 conditions, 138669 events. 97896/138669 cut-off events. For 2669/2669 co-relation queries the response was YES. Maximal size of possible extension queue 3605. Compared 1011765 event pairs, 63646 based on Foata normal form. 10164/106425 useless extension candidates. Maximal degree in co-relation 24451. Up to 135947 conditions per place. [2023-08-30 10:09:36,259 INFO L137 encePairwiseOnDemand]: 352/377 looper letters, 73 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-08-30 10:09:36,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 83 transitions, 346 flow [2023-08-30 10:09:36,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:09:36,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:09:36,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 623 transitions. [2023-08-30 10:09:36,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508399646330681 [2023-08-30 10:09:36,260 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 623 transitions. [2023-08-30 10:09:36,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 623 transitions. [2023-08-30 10:09:36,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:36,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 623 transitions. [2023-08-30 10:09:36,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 0 states 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 10:09:36,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states 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 10:09:36,263 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states 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 10:09:36,263 INFO L175 Difference]: Start difference. First operand has 72 places, 88 transitions, 206 flow. Second operand 3 states and 623 transitions. [2023-08-30 10:09:36,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 83 transitions, 346 flow [2023-08-30 10:09:36,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 83 transitions, 346 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:09:36,266 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 182 flow [2023-08-30 10:09:36,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2023-08-30 10:09:36,267 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2023-08-30 10:09:36,267 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 182 flow [2023-08-30 10:09:36,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 10:09:36,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:36,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:36,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 10:09:36,268 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:09:36,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:36,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1265955606, now seen corresponding path program 1 times [2023-08-30 10:09:36,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:36,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602113809] [2023-08-30 10:09:36,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:36,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:36,314 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 10:09:36,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:36,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602113809] [2023-08-30 10:09:36,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602113809] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:36,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:36,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:09:36,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275390583] [2023-08-30 10:09:36,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:36,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:09:36,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:36,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:09:36,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:09:36,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 377 [2023-08-30 10:09:36,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 10:09:36,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:36,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 377 [2023-08-30 10:09:36,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:43,141 INFO L130 PetriNetUnfolder]: 93406/131115 cut-off events. [2023-08-30 10:09:43,141 INFO L131 PetriNetUnfolder]: For 8636/8636 co-relation queries the response was YES. [2023-08-30 10:09:43,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274598 conditions, 131115 events. 93406/131115 cut-off events. For 8636/8636 co-relation queries the response was YES. Maximal size of possible extension queue 3590. Compared 931024 event pairs, 45329 based on Foata normal form. 176/94681 useless extension candidates. Maximal degree in co-relation 274509. Up to 127779 conditions per place. [2023-08-30 10:09:43,684 INFO L137 encePairwiseOnDemand]: 366/377 looper letters, 88 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2023-08-30 10:09:43,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 104 transitions, 467 flow [2023-08-30 10:09:43,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:09:43,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:09:43,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 766 transitions. [2023-08-30 10:09:43,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079575596816976 [2023-08-30 10:09:43,686 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 766 transitions. [2023-08-30 10:09:43,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 766 transitions. [2023-08-30 10:09:43,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:43,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 766 transitions. [2023-08-30 10:09:43,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 191.5) internal successors, (766), 4 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:43,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 377.0) internal successors, (1885), 5 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states 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 10:09:43,688 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 377.0) internal successors, (1885), 5 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states 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 10:09:43,689 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 182 flow. Second operand 4 states and 766 transitions. [2023-08-30 10:09:43,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 104 transitions, 467 flow [2023-08-30 10:09:43,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 104 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:09:43,699 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 251 flow [2023-08-30 10:09:43,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=251, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2023-08-30 10:09:43,699 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 7 predicate places. [2023-08-30 10:09:43,699 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 251 flow [2023-08-30 10:09:43,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 10:09:43,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:43,700 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:09:43,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 10:09:43,700 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:09:43,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:43,701 INFO L85 PathProgramCache]: Analyzing trace with hash 740882542, now seen corresponding path program 1 times [2023-08-30 10:09:43,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:43,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040354906] [2023-08-30 10:09:43,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:43,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:43,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:09:43,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:43,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040354906] [2023-08-30 10:09:43,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040354906] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:43,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:43,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:09:43,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011257667] [2023-08-30 10:09:43,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:43,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:09:43,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:43,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:09:43,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:09:43,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 377 [2023-08-30 10:09:43,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 251 flow. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 10:09:43,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:43,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 377 [2023-08-30 10:09:43,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:50,402 INFO L130 PetriNetUnfolder]: 85247/119710 cut-off events. [2023-08-30 10:09:50,402 INFO L131 PetriNetUnfolder]: For 27128/27152 co-relation queries the response was YES. [2023-08-30 10:09:50,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282873 conditions, 119710 events. 85247/119710 cut-off events. For 27128/27152 co-relation queries the response was YES. Maximal size of possible extension queue 3173. Compared 873414 event pairs, 21963 based on Foata normal form. 0/95694 useless extension candidates. Maximal degree in co-relation 172487. Up to 88040 conditions per place. [2023-08-30 10:09:51,154 INFO L137 encePairwiseOnDemand]: 373/377 looper letters, 107 selfloop transitions, 4 changer transitions 0/119 dead transitions. [2023-08-30 10:09:51,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 119 transitions, 596 flow [2023-08-30 10:09:51,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:09:51,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:09:51,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 617 transitions. [2023-08-30 10:09:51,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5455349248452697 [2023-08-30 10:09:51,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 617 transitions. [2023-08-30 10:09:51,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 617 transitions. [2023-08-30 10:09:51,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:51,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 617 transitions. [2023-08-30 10:09:51,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states 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 10:09:51,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states 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 10:09:51,157 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states 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 10:09:51,157 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 251 flow. Second operand 3 states and 617 transitions. [2023-08-30 10:09:51,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 119 transitions, 596 flow [2023-08-30 10:09:51,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 119 transitions, 596 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:09:51,185 INFO L231 Difference]: Finished difference. Result has 81 places, 76 transitions, 263 flow [2023-08-30 10:09:51,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=263, PETRI_PLACES=81, PETRI_TRANSITIONS=76} [2023-08-30 10:09:51,185 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 9 predicate places. [2023-08-30 10:09:51,186 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 76 transitions, 263 flow [2023-08-30 10:09:51,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 10:09:51,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:51,186 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:09:51,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-30 10:09:51,186 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:09:51,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:51,187 INFO L85 PathProgramCache]: Analyzing trace with hash 740882500, now seen corresponding path program 1 times [2023-08-30 10:09:51,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:51,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179588406] [2023-08-30 10:09:51,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:51,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:51,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:09:51,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:51,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179588406] [2023-08-30 10:09:51,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179588406] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:51,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:51,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:09:51,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764270603] [2023-08-30 10:09:51,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:51,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:09:51,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:51,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:09:51,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:09:51,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 377 [2023-08-30 10:09:51,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 263 flow. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states 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 10:09:51,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:51,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 377 [2023-08-30 10:09:51,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:57,831 INFO L130 PetriNetUnfolder]: 77088/108970 cut-off events. [2023-08-30 10:09:57,832 INFO L131 PetriNetUnfolder]: For 50724/50788 co-relation queries the response was YES. [2023-08-30 10:09:57,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264231 conditions, 108970 events. 77088/108970 cut-off events. For 50724/50788 co-relation queries the response was YES. Maximal size of possible extension queue 2791. Compared 759972 event pairs, 73348 based on Foata normal form. 2998/92707 useless extension candidates. Maximal degree in co-relation 161488. Up to 107594 conditions per place. [2023-08-30 10:09:58,318 INFO L137 encePairwiseOnDemand]: 375/377 looper letters, 66 selfloop transitions, 1 changer transitions 0/75 dead transitions. [2023-08-30 10:09:58,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 75 transitions, 393 flow [2023-08-30 10:09:58,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:09:58,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:09:58,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 578 transitions. [2023-08-30 10:09:58,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51105216622458 [2023-08-30 10:09:58,319 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 578 transitions. [2023-08-30 10:09:58,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 578 transitions. [2023-08-30 10:09:58,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:58,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 578 transitions. [2023-08-30 10:09:58,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states 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 10:09:58,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states 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 10:09:58,321 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states 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 10:09:58,321 INFO L175 Difference]: Start difference. First operand has 81 places, 76 transitions, 263 flow. Second operand 3 states and 578 transitions. [2023-08-30 10:09:58,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 75 transitions, 393 flow [2023-08-30 10:09:58,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 75 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:09:58,400 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 257 flow [2023-08-30 10:09:58,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=257, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2023-08-30 10:09:58,401 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 9 predicate places. [2023-08-30 10:09:58,401 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 257 flow [2023-08-30 10:09:58,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states 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 10:09:58,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:58,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:58,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-30 10:09:58,402 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:09:58,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:58,402 INFO L85 PathProgramCache]: Analyzing trace with hash 751271682, now seen corresponding path program 1 times [2023-08-30 10:09:58,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:58,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427698448] [2023-08-30 10:09:58,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:58,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:58,486 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 10:09:58,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:58,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427698448] [2023-08-30 10:09:58,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427698448] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:58,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:58,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:09:58,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296469855] [2023-08-30 10:09:58,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:58,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:09:58,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:58,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:09:58,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:09:58,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 377 [2023-08-30 10:09:58,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 257 flow. Second operand has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states 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 10:09:58,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:58,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 377 [2023-08-30 10:09:58,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:10:08,457 INFO L130 PetriNetUnfolder]: 114090/165682 cut-off events. [2023-08-30 10:10:08,457 INFO L131 PetriNetUnfolder]: For 59895/59985 co-relation queries the response was YES. [2023-08-30 10:10:08,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391372 conditions, 165682 events. 114090/165682 cut-off events. For 59895/59985 co-relation queries the response was YES. Maximal size of possible extension queue 4523. Compared 1284418 event pairs, 26165 based on Foata normal form. 90/141349 useless extension candidates. Maximal degree in co-relation 391355. Up to 93784 conditions per place. [2023-08-30 10:10:09,267 INFO L137 encePairwiseOnDemand]: 354/377 looper letters, 212 selfloop transitions, 42 changer transitions 0/262 dead transitions. [2023-08-30 10:10:09,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 262 transitions, 1352 flow [2023-08-30 10:10:09,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 10:10:09,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 10:10:09,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1707 transitions. [2023-08-30 10:10:09,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030946065428824 [2023-08-30 10:10:09,269 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1707 transitions. [2023-08-30 10:10:09,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1707 transitions. [2023-08-30 10:10:09,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:10:09,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1707 transitions. [2023-08-30 10:10:09,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 189.66666666666666) internal successors, (1707), 9 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states 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 10:10:09,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 377.0) internal successors, (3770), 10 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states 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 10:10:09,273 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 377.0) internal successors, (3770), 10 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states 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 10:10:09,273 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 257 flow. Second operand 9 states and 1707 transitions. [2023-08-30 10:10:09,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 262 transitions, 1352 flow [2023-08-30 10:10:09,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 262 transitions, 1351 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:10:09,331 INFO L231 Difference]: Finished difference. Result has 92 places, 108 transitions, 593 flow [2023-08-30 10:10:09,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=593, PETRI_PLACES=92, PETRI_TRANSITIONS=108} [2023-08-30 10:10:09,332 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 20 predicate places. [2023-08-30 10:10:09,332 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 108 transitions, 593 flow [2023-08-30 10:10:09,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states 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 10:10:09,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:10:09,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:10:09,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-30 10:10:09,332 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:10:09,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:10:09,332 INFO L85 PathProgramCache]: Analyzing trace with hash 751271696, now seen corresponding path program 1 times [2023-08-30 10:10:09,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:10:09,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276573817] [2023-08-30 10:10:09,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:09,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:10:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:10:09,371 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 10:10:09,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:10:09,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276573817] [2023-08-30 10:10:09,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276573817] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:10:09,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:10:09,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:10:09,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541012930] [2023-08-30 10:10:09,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:10:09,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:10:09,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:10:09,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:10:09,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:10:09,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 377 [2023-08-30 10:10:09,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 108 transitions, 593 flow. Second operand has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states 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 10:10:09,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:10:09,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 377 [2023-08-30 10:10:09,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:10:23,668 INFO L130 PetriNetUnfolder]: 135466/202242 cut-off events. [2023-08-30 10:10:23,668 INFO L131 PetriNetUnfolder]: For 287946/288142 co-relation queries the response was YES. [2023-08-30 10:10:24,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609302 conditions, 202242 events. 135466/202242 cut-off events. For 287946/288142 co-relation queries the response was YES. Maximal size of possible extension queue 5332. Compared 1683255 event pairs, 47810 based on Foata normal form. 9657/208944 useless extension candidates. Maximal degree in co-relation 609280. Up to 119783 conditions per place. [2023-08-30 10:10:25,075 INFO L137 encePairwiseOnDemand]: 360/377 looper letters, 137 selfloop transitions, 38 changer transitions 0/183 dead transitions. [2023-08-30 10:10:25,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 183 transitions, 1342 flow [2023-08-30 10:10:25,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:10:25,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:10:25,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 618 transitions. [2023-08-30 10:10:25,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5464190981432361 [2023-08-30 10:10:25,077 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 618 transitions. [2023-08-30 10:10:25,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 618 transitions. [2023-08-30 10:10:25,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:10:25,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 618 transitions. [2023-08-30 10:10:25,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states 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 10:10:25,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states 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 10:10:25,078 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states 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 10:10:25,078 INFO L175 Difference]: Start difference. First operand has 92 places, 108 transitions, 593 flow. Second operand 3 states and 618 transitions. [2023-08-30 10:10:25,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 183 transitions, 1342 flow [2023-08-30 10:10:25,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 183 transitions, 1315 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-30 10:10:25,875 INFO L231 Difference]: Finished difference. Result has 94 places, 134 transitions, 972 flow [2023-08-30 10:10:25,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=972, PETRI_PLACES=94, PETRI_TRANSITIONS=134} [2023-08-30 10:10:25,875 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 22 predicate places. [2023-08-30 10:10:25,875 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 134 transitions, 972 flow [2023-08-30 10:10:25,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states 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 10:10:25,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:10:25,875 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:10:25,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-30 10:10:25,876 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:10:25,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:10:25,876 INFO L85 PathProgramCache]: Analyzing trace with hash 600884031, now seen corresponding path program 1 times [2023-08-30 10:10:25,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:10:25,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614288017] [2023-08-30 10:10:25,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:25,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:10:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:10:25,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:10:25,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:10:25,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614288017] [2023-08-30 10:10:25,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614288017] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:10:25,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:10:25,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:10:25,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363104731] [2023-08-30 10:10:25,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:10:25,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:10:25,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:10:25,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:10:25,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:10:26,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 377 [2023-08-30 10:10:26,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 134 transitions, 972 flow. Second operand has 5 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states 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 10:10:26,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:10:26,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 377 [2023-08-30 10:10:26,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:10:40,929 INFO L130 PetriNetUnfolder]: 130673/193962 cut-off events. [2023-08-30 10:10:40,930 INFO L131 PetriNetUnfolder]: For 458634/459035 co-relation queries the response was YES. [2023-08-30 10:10:41,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651261 conditions, 193962 events. 130673/193962 cut-off events. For 458634/459035 co-relation queries the response was YES. Maximal size of possible extension queue 5046. Compared 1591319 event pairs, 60550 based on Foata normal form. 2034/193108 useless extension candidates. Maximal degree in co-relation 651236. Up to 120444 conditions per place. [2023-08-30 10:10:42,111 INFO L137 encePairwiseOnDemand]: 360/377 looper letters, 273 selfloop transitions, 59 changer transitions 0/340 dead transitions. [2023-08-30 10:10:42,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 340 transitions, 3047 flow [2023-08-30 10:10:42,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:10:42,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:10:42,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1018 transitions. [2023-08-30 10:10:42,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.540053050397878 [2023-08-30 10:10:42,112 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1018 transitions. [2023-08-30 10:10:42,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1018 transitions. [2023-08-30 10:10:42,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:10:42,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1018 transitions. [2023-08-30 10:10:42,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states 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 10:10:42,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 377.0) internal successors, (2262), 6 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states 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 10:10:42,115 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 377.0) internal successors, (2262), 6 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states 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 10:10:42,115 INFO L175 Difference]: Start difference. First operand has 94 places, 134 transitions, 972 flow. Second operand 5 states and 1018 transitions. [2023-08-30 10:10:42,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 340 transitions, 3047 flow [2023-08-30 10:10:43,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 340 transitions, 2865 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:10:43,683 INFO L231 Difference]: Finished difference. Result has 100 places, 182 transitions, 1640 flow [2023-08-30 10:10:43,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1640, PETRI_PLACES=100, PETRI_TRANSITIONS=182} [2023-08-30 10:10:43,683 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 28 predicate places. [2023-08-30 10:10:43,683 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 182 transitions, 1640 flow [2023-08-30 10:10:43,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states 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 10:10:43,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:10:43,684 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:10:43,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-30 10:10:43,684 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:10:43,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:10:43,684 INFO L85 PathProgramCache]: Analyzing trace with hash 600884017, now seen corresponding path program 1 times [2023-08-30 10:10:43,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:10:43,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570203948] [2023-08-30 10:10:43,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:43,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:10:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:10:43,795 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 10:10:43,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:10:43,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570203948] [2023-08-30 10:10:43,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570203948] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:10:43,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762559440] [2023-08-30 10:10:43,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:43,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:10:43,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:10:43,801 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:10:43,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 10:10:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:10:43,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 10:10:43,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:10:43,931 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:10:43,931 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 10:10:43,950 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 10:10:44,017 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 10:10:44,042 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 10:10:44,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:10:44,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:10:44,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762559440] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:10:44,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:10:44,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-30 10:10:44,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650312067] [2023-08-30 10:10:44,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:10:44,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:10:44,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:10:44,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:10:44,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:10:44,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 377 [2023-08-30 10:10:44,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 182 transitions, 1640 flow. Second operand has 6 states, 6 states have (on average 163.83333333333334) internal successors, (983), 6 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 10:10:44,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:10:44,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 377 [2023-08-30 10:10:44,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:11:00,068 INFO L130 PetriNetUnfolder]: 127869/189606 cut-off events. [2023-08-30 10:11:00,068 INFO L131 PetriNetUnfolder]: For 561230/561455 co-relation queries the response was YES. [2023-08-30 10:11:00,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668752 conditions, 189606 events. 127869/189606 cut-off events. For 561230/561455 co-relation queries the response was YES. Maximal size of possible extension queue 4916. Compared 1532159 event pairs, 49114 based on Foata normal form. 636/187426 useless extension candidates. Maximal degree in co-relation 668723. Up to 178008 conditions per place. [2023-08-30 10:11:01,909 INFO L137 encePairwiseOnDemand]: 367/377 looper letters, 237 selfloop transitions, 36 changer transitions 0/281 dead transitions. [2023-08-30 10:11:01,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 281 transitions, 2844 flow [2023-08-30 10:11:01,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:11:01,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:11:01,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1108 transitions. [2023-08-30 10:11:01,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48983200707338637 [2023-08-30 10:11:01,930 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1108 transitions. [2023-08-30 10:11:01,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1108 transitions. [2023-08-30 10:11:01,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:11:01,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1108 transitions. [2023-08-30 10:11:01,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 184.66666666666666) internal successors, (1108), 6 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states 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 10:11:01,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 377.0) internal successors, (2639), 7 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states 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 10:11:01,936 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 377.0) internal successors, (2639), 7 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states 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 10:11:01,936 INFO L175 Difference]: Start difference. First operand has 100 places, 182 transitions, 1640 flow. Second operand 6 states and 1108 transitions. [2023-08-30 10:11:01,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 281 transitions, 2844 flow [2023-08-30 10:11:38,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 281 transitions, 2824 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-08-30 10:11:38,983 INFO L231 Difference]: Finished difference. Result has 107 places, 207 transitions, 2039 flow [2023-08-30 10:11:38,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=1620, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2039, PETRI_PLACES=107, PETRI_TRANSITIONS=207} [2023-08-30 10:11:38,983 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 35 predicate places. [2023-08-30 10:11:38,983 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 207 transitions, 2039 flow [2023-08-30 10:11:38,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 163.83333333333334) internal successors, (983), 6 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 10:11:38,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:11:38,984 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:11:38,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 10:11:39,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:11:39,185 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:11:39,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:11:39,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1798027451, now seen corresponding path program 1 times [2023-08-30 10:11:39,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:11:39,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349536655] [2023-08-30 10:11:39,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:11:39,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:11:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:11:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:11:39,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:11:39,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349536655] [2023-08-30 10:11:39,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349536655] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:11:39,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20681014] [2023-08-30 10:11:39,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:11:39,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:11:39,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:11:39,281 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:11:39,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 10:11:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:11:39,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 10:11:39,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:11:39,394 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:11:39,395 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 10:11:39,412 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 10:11:39,443 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 10:11:39,495 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 10:11:39,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:11:39,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:11:39,555 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1022 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1022) c_~g1~0.base) c_~g1~0.offset)))) is different from false [2023-08-30 10:11:39,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-30 10:11:39,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20681014] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:11:39,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:11:39,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-08-30 10:11:39,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089459449] [2023-08-30 10:11:39,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:11:39,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 10:11:39,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:11:39,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 10:11:39,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=112, Unknown=1, NotChecked=22, Total=182 [2023-08-30 10:11:39,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 377 [2023-08-30 10:11:39,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 207 transitions, 2039 flow. Second operand has 14 states, 14 states have (on average 139.78571428571428) internal successors, (1957), 14 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states 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 10:11:39,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:11:39,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 377 [2023-08-30 10:11:39,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand