./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:08:41,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:08:41,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:08:41,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:08:41,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:08:41,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:08:41,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:08:41,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:08:41,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:08:41,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:08:41,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:08:41,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:08:41,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:08:41,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:08:41,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:08:41,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:08:41,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:08:41,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:08:41,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:08:41,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:08:41,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:08:41,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:08:41,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:08:41,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:08:41,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:08:41,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:08:41,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:08:41,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:08:41,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:08:41,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:08:41,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:08:41,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:08:41,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:08:41,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:08:41,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:08:41,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:08:41,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:08:41,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:08:41,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:08:41,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:08:41,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:08:41,857 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:08:41,883 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:08:41,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:08:41,884 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:08:41,885 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:08:41,886 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:08:41,886 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:08:41,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:08:41,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:08:41,887 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:08:41,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:08:41,888 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:08:41,888 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:08:41,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:08:41,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:08:41,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:08:41,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:08:41,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:08:41,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:08:41,890 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:08:41,890 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:08:41,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:08:41,890 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:08:41,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:08:41,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:08:41,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:08:41,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:08:41,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:08:41,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:08:41,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:08:41,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:08:41,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:08:41,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:08:41,892 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:08:41,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:08:41,893 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:08:41,893 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:08:41,893 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:08:41,893 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:08:42,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:08:42,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:08:42,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:08:42,207 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:08:42,207 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:08:42,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i [2023-08-30 14:08:43,298 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:08:43,589 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:08:43,589 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i [2023-08-30 14:08:43,606 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d81b511b9/818491b716c94c44bbe3e2a4aaf55700/FLAG69a396fb0 [2023-08-30 14:08:43,617 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d81b511b9/818491b716c94c44bbe3e2a4aaf55700 [2023-08-30 14:08:43,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:08:43,620 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:08:43,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:08:43,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:08:43,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:08:43,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:08:43" (1/1) ... [2023-08-30 14:08:43,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ec284e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:43, skipping insertion in model container [2023-08-30 14:08:43,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:08:43" (1/1) ... [2023-08-30 14:08:43,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:08:43,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:08:43,985 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_12-ptr_racefree.i[30176,30189] [2023-08-30 14:08:44,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:08:44,017 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:08:44,052 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_12-ptr_racefree.i[30176,30189] [2023-08-30 14:08:44,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:08:44,127 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:08:44,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:44 WrapperNode [2023-08-30 14:08:44,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:08:44,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:08:44,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:08:44,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:08:44,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:44" (1/1) ... [2023-08-30 14:08:44,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:44" (1/1) ... [2023-08-30 14:08:44,173 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2023-08-30 14:08:44,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:08:44,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:08:44,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:08:44,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:08:44,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:44" (1/1) ... [2023-08-30 14:08:44,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:44" (1/1) ... [2023-08-30 14:08:44,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:44" (1/1) ... [2023-08-30 14:08:44,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:44" (1/1) ... [2023-08-30 14:08:44,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:44" (1/1) ... [2023-08-30 14:08:44,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:44" (1/1) ... [2023-08-30 14:08:44,216 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:44" (1/1) ... [2023-08-30 14:08:44,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:44" (1/1) ... [2023-08-30 14:08:44,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:08:44,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:08:44,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:08:44,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:08:44,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:44" (1/1) ... [2023-08-30 14:08:44,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:08:44,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:08:44,255 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 14:08:44,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 14:08:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:08:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:08:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:08:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:08:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:08:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:08:44,299 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:08:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:08:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:08:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:08:44,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:08:44,301 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 14:08:44,452 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:08:44,457 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:08:44,624 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:08:44,631 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:08:44,631 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-30 14:08:44,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:08:44 BoogieIcfgContainer [2023-08-30 14:08:44,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:08:44,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:08:44,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:08:44,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:08:44,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:08:43" (1/3) ... [2023-08-30 14:08:44,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6ab9fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:08:44, skipping insertion in model container [2023-08-30 14:08:44,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:08:44" (2/3) ... [2023-08-30 14:08:44,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6ab9fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:08:44, skipping insertion in model container [2023-08-30 14:08:44,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:08:44" (3/3) ... [2023-08-30 14:08:44,640 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2023-08-30 14:08:44,646 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:08:44,654 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:08:44,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 14:08:44,654 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:08:44,754 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:08:44,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 132 transitions, 272 flow [2023-08-30 14:08:44,876 INFO L130 PetriNetUnfolder]: 17/166 cut-off events. [2023-08-30 14:08:44,876 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:08:44,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 166 events. 17/166 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 391 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2023-08-30 14:08:44,882 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 132 transitions, 272 flow [2023-08-30 14:08:44,889 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 129 transitions, 266 flow [2023-08-30 14:08:44,893 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:08:44,905 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 129 transitions, 266 flow [2023-08-30 14:08:44,908 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 129 transitions, 266 flow [2023-08-30 14:08:44,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 129 transitions, 266 flow [2023-08-30 14:08:44,955 INFO L130 PetriNetUnfolder]: 16/163 cut-off events. [2023-08-30 14:08:44,956 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:08:44,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 163 events. 16/163 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 389 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2023-08-30 14:08:44,960 INFO L119 LiptonReduction]: Number of co-enabled transitions 3608 [2023-08-30 14:08:48,085 INFO L134 LiptonReduction]: Checked pairs total: 7132 [2023-08-30 14:08:48,085 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-08-30 14:08:48,103 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:08:48,110 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;@180ff8b2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:08:48,111 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-30 14:08:48,118 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-08-30 14:08:48,118 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:08:48,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:48,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:08:48,120 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:08:48,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:48,126 INFO L85 PathProgramCache]: Analyzing trace with hash 15420230, now seen corresponding path program 1 times [2023-08-30 14:08:48,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:48,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126071574] [2023-08-30 14:08:48,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:48,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:48,356 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 14:08:48,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:08:48,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126071574] [2023-08-30 14:08:48,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126071574] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:08:48,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:08:48,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:08:48,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413099408] [2023-08-30 14:08:48,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:08:48,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:08:48,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:08:48,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:08:48,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:08:48,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 245 [2023-08-30 14:08:48,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 40 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:48,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:08:48,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 245 [2023-08-30 14:08:48,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:08:48,493 INFO L130 PetriNetUnfolder]: 98/254 cut-off events. [2023-08-30 14:08:48,493 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:08:48,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 254 events. 98/254 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1165 event pairs, 0 based on Foata normal form. 8/214 useless extension candidates. Maximal degree in co-relation 450. Up to 207 conditions per place. [2023-08-30 14:08:48,499 INFO L137 encePairwiseOnDemand]: 231/245 looper letters, 39 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-30 14:08:48,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 178 flow [2023-08-30 14:08:48,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:08:48,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:08:48,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 401 transitions. [2023-08-30 14:08:48,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.545578231292517 [2023-08-30 14:08:48,518 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 401 transitions. [2023-08-30 14:08:48,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 401 transitions. [2023-08-30 14:08:48,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:08:48,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 401 transitions. [2023-08-30 14:08:48,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:48,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:48,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:48,535 INFO L175 Difference]: Start difference. First operand has 35 places, 40 transitions, 88 flow. Second operand 3 states and 401 transitions. [2023-08-30 14:08:48,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 178 flow [2023-08-30 14:08:48,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 178 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:08:48,542 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 74 flow [2023-08-30 14:08:48,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, 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 14:08:48,549 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-30 14:08:48,549 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 74 flow [2023-08-30 14:08:48,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:48,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:48,550 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 14:08:48,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:08:48,551 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:08:48,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:48,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1933954131, now seen corresponding path program 1 times [2023-08-30 14:08:48,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:48,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514441048] [2023-08-30 14:08:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:48,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:08:48,601 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:08:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:08:48,654 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:08:48,657 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:08:48,658 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-08-30 14:08:48,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-30 14:08:48,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-30 14:08:48,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-30 14:08:48,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-30 14:08:48,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-30 14:08:48,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-08-30 14:08:48,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-30 14:08:48,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-30 14:08:48,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-30 14:08:48,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-30 14:08:48,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-30 14:08:48,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-30 14:08:48,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:08:48,673 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 14:08:48,675 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:08:48,676 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:08:48,704 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:08:48,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 175 transitions, 368 flow [2023-08-30 14:08:48,737 INFO L130 PetriNetUnfolder]: 31/279 cut-off events. [2023-08-30 14:08:48,738 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:08:48,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 279 events. 31/279 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 860 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 168. Up to 8 conditions per place. [2023-08-30 14:08:48,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 175 transitions, 368 flow [2023-08-30 14:08:48,742 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 175 transitions, 368 flow [2023-08-30 14:08:48,742 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:08:48,742 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 175 transitions, 368 flow [2023-08-30 14:08:48,743 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 175 transitions, 368 flow [2023-08-30 14:08:48,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 175 transitions, 368 flow [2023-08-30 14:08:48,781 INFO L130 PetriNetUnfolder]: 31/279 cut-off events. [2023-08-30 14:08:48,782 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:08:48,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 279 events. 31/279 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 860 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 168. Up to 8 conditions per place. [2023-08-30 14:08:48,790 INFO L119 LiptonReduction]: Number of co-enabled transitions 12136 [2023-08-30 14:08:51,940 INFO L134 LiptonReduction]: Checked pairs total: 25016 [2023-08-30 14:08:51,940 INFO L136 LiptonReduction]: Total number of compositions: 145 [2023-08-30 14:08:51,942 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:08:51,943 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;@180ff8b2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:08:51,943 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 14:08:51,945 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2023-08-30 14:08:51,945 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:08:51,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:51,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:08:51,946 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:08:51,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:51,946 INFO L85 PathProgramCache]: Analyzing trace with hash 824160604, now seen corresponding path program 1 times [2023-08-30 14:08:51,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:51,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725778249] [2023-08-30 14:08:51,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:51,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:08:52,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:08:52,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725778249] [2023-08-30 14:08:52,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725778249] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:08:52,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:08:52,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:08:52,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009037854] [2023-08-30 14:08:52,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:08:52,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:08:52,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:08:52,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:08:52,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:08:52,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 320 [2023-08-30 14:08:52,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 66 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:52,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:08:52,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 320 [2023-08-30 14:08:52,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:08:52,613 INFO L130 PetriNetUnfolder]: 4435/7387 cut-off events. [2023-08-30 14:08:52,613 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2023-08-30 14:08:52,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14554 conditions, 7387 events. 4435/7387 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 48684 event pairs, 2080 based on Foata normal form. 710/5777 useless extension candidates. Maximal degree in co-relation 1677. Up to 7046 conditions per place. [2023-08-30 14:08:52,651 INFO L137 encePairwiseOnDemand]: 301/320 looper letters, 58 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-30 14:08:52,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 272 flow [2023-08-30 14:08:52,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:08:52,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:08:52,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2023-08-30 14:08:52,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2023-08-30 14:08:52,653 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2023-08-30 14:08:52,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2023-08-30 14:08:52,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:08:52,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2023-08-30 14:08:52,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:52,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:52,658 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:52,658 INFO L175 Difference]: Start difference. First operand has 55 places, 66 transitions, 150 flow. Second operand 3 states and 530 transitions. [2023-08-30 14:08:52,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 272 flow [2023-08-30 14:08:52,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:08:52,662 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 138 flow [2023-08-30 14:08:52,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-08-30 14:08:52,664 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2023-08-30 14:08:52,664 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 138 flow [2023-08-30 14:08:52,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:52,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:52,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:08:52,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:08:52,665 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:08:52,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:52,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1751611126, now seen corresponding path program 1 times [2023-08-30 14:08:52,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:52,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610401342] [2023-08-30 14:08:52,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:52,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:52,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:08:52,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:08:52,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610401342] [2023-08-30 14:08:52,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610401342] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:08:52,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:08:52,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:08:52,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246595791] [2023-08-30 14:08:52,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:08:52,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:08:52,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:08:52,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:08:52,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:08:52,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 320 [2023-08-30 14:08:52,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 143.2) internal successors, (716), 5 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:52,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:08:52,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 320 [2023-08-30 14:08:52,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:08:53,836 INFO L130 PetriNetUnfolder]: 6536/10939 cut-off events. [2023-08-30 14:08:53,836 INFO L131 PetriNetUnfolder]: For 579/579 co-relation queries the response was YES. [2023-08-30 14:08:53,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22467 conditions, 10939 events. 6536/10939 cut-off events. For 579/579 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 77808 event pairs, 1484 based on Foata normal form. 0/7920 useless extension candidates. Maximal degree in co-relation 22379. Up to 6110 conditions per place. [2023-08-30 14:08:53,891 INFO L137 encePairwiseOnDemand]: 309/320 looper letters, 134 selfloop transitions, 18 changer transitions 0/159 dead transitions. [2023-08-30 14:08:53,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 159 transitions, 695 flow [2023-08-30 14:08:53,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:08:53,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:08:53,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1005 transitions. [2023-08-30 14:08:53,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2023-08-30 14:08:53,895 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1005 transitions. [2023-08-30 14:08:53,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1005 transitions. [2023-08-30 14:08:53,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:08:53,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1005 transitions. [2023-08-30 14:08:53,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.5) internal successors, (1005), 6 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:53,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 320.0) internal successors, (2240), 7 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:53,901 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 320.0) internal successors, (2240), 7 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:53,902 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 138 flow. Second operand 6 states and 1005 transitions. [2023-08-30 14:08:53,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 159 transitions, 695 flow [2023-08-30 14:08:53,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 159 transitions, 691 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:08:53,906 INFO L231 Difference]: Finished difference. Result has 67 places, 70 transitions, 268 flow [2023-08-30 14:08:53,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=67, PETRI_TRANSITIONS=70} [2023-08-30 14:08:53,907 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2023-08-30 14:08:53,907 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 268 flow [2023-08-30 14:08:53,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.2) internal successors, (716), 5 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:53,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:53,908 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:08:53,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:08:53,908 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:08:53,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:53,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1326247970, now seen corresponding path program 1 times [2023-08-30 14:08:53,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:53,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766793664] [2023-08-30 14:08:53,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:53,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:53,939 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 14:08:53,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:08:53,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766793664] [2023-08-30 14:08:53,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766793664] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:08:53,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:08:53,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:08:53,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423501151] [2023-08-30 14:08:53,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:08:53,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:08:53,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:08:53,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:08:53,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:08:53,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 320 [2023-08-30 14:08:53,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 70 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:53,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:08:53,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 320 [2023-08-30 14:08:53,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:08:54,772 INFO L130 PetriNetUnfolder]: 6136/10181 cut-off events. [2023-08-30 14:08:54,773 INFO L131 PetriNetUnfolder]: For 3986/3986 co-relation queries the response was YES. [2023-08-30 14:08:54,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25254 conditions, 10181 events. 6136/10181 cut-off events. For 3986/3986 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 71401 event pairs, 1790 based on Foata normal form. 0/8165 useless extension candidates. Maximal degree in co-relation 20354. Up to 8205 conditions per place. [2023-08-30 14:08:54,824 INFO L137 encePairwiseOnDemand]: 316/320 looper letters, 89 selfloop transitions, 5 changer transitions 0/101 dead transitions. [2023-08-30 14:08:54,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 101 transitions, 556 flow [2023-08-30 14:08:54,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:08:54,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:08:54,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2023-08-30 14:08:54,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2023-08-30 14:08:54,827 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2023-08-30 14:08:54,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2023-08-30 14:08:54,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:08:54,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2023-08-30 14:08:54,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 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 14:08:54,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:54,831 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:54,831 INFO L175 Difference]: Start difference. First operand has 67 places, 70 transitions, 268 flow. Second operand 3 states and 516 transitions. [2023-08-30 14:08:54,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 101 transitions, 556 flow [2023-08-30 14:08:54,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 101 transitions, 556 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:08:54,843 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 285 flow [2023-08-30 14:08:54,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=66, 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=3, PETRI_FLOW=285, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2023-08-30 14:08:54,844 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 14 predicate places. [2023-08-30 14:08:54,844 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 285 flow [2023-08-30 14:08:54,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:54,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:54,845 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:08:54,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:08:54,846 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:08:54,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:54,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1326247971, now seen corresponding path program 1 times [2023-08-30 14:08:54,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:54,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471216181] [2023-08-30 14:08:54,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:54,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:54,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:08:54,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:08:54,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471216181] [2023-08-30 14:08:54,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471216181] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:08:54,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144285023] [2023-08-30 14:08:54,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:54,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:08:54,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:08:54,886 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:08:54,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 14:08:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:54,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:08:54,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:08:55,030 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 14:08:55,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:08:55,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144285023] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:08:55,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:08:55,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:08:55,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983351087] [2023-08-30 14:08:55,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:08:55,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:08:55,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:08:55,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:08:55,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:08:55,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 320 [2023-08-30 14:08:55,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:55,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:08:55,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 320 [2023-08-30 14:08:55,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:08:55,799 INFO L130 PetriNetUnfolder]: 5736/9667 cut-off events. [2023-08-30 14:08:55,799 INFO L131 PetriNetUnfolder]: For 6367/6367 co-relation queries the response was YES. [2023-08-30 14:08:55,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24412 conditions, 9667 events. 5736/9667 cut-off events. For 6367/6367 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 66477 event pairs, 3335 based on Foata normal form. 214/8174 useless extension candidates. Maximal degree in co-relation 19785. Up to 9263 conditions per place. [2023-08-30 14:08:55,851 INFO L137 encePairwiseOnDemand]: 317/320 looper letters, 71 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-08-30 14:08:55,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 80 transitions, 459 flow [2023-08-30 14:08:55,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:08:55,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:08:55,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 653 transitions. [2023-08-30 14:08:55,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51015625 [2023-08-30 14:08:55,854 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 653 transitions. [2023-08-30 14:08:55,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 653 transitions. [2023-08-30 14:08:55,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:08:55,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 653 transitions. [2023-08-30 14:08:55,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:55,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 320.0) internal successors, (1600), 5 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:55,915 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 320.0) internal successors, (1600), 5 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:55,915 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 285 flow. Second operand 4 states and 653 transitions. [2023-08-30 14:08:55,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 80 transitions, 459 flow [2023-08-30 14:08:55,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 80 transitions, 454 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:08:55,925 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 280 flow [2023-08-30 14:08:55,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2023-08-30 14:08:55,926 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2023-08-30 14:08:55,926 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 280 flow [2023-08-30 14:08:55,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:55,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:55,927 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:08:55,936 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 14:08:56,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 14:08:56,132 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:08:56,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:56,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1613093751, now seen corresponding path program 1 times [2023-08-30 14:08:56,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:56,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199351098] [2023-08-30 14:08:56,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:56,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:56,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:08:56,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:08:56,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199351098] [2023-08-30 14:08:56,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199351098] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:08:56,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863981071] [2023-08-30 14:08:56,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:56,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:08:56,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:08:56,241 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:08:56,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 14:08:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:56,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 14:08:56,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:08:56,390 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:08:56,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:08:56,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:08:56,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:08:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:08:56,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:08:56,553 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_62 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_62) c_t_funThread1of2ForFork0_~p~0.base) c_t_funThread1of2ForFork0_~p~0.offset) 2147483647)) is different from false [2023-08-30 14:08:56,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 14:08:56,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863981071] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:08:56,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:08:56,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-08-30 14:08:56,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527471712] [2023-08-30 14:08:56,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:08:56,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 14:08:56,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:08:56,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 14:08:56,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=4, NotChecked=16, Total=110 [2023-08-30 14:08:56,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 320 [2023-08-30 14:08:56,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 280 flow. Second operand has 11 states, 11 states have (on average 124.18181818181819) internal successors, (1366), 11 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:56,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:08:56,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 320 [2023-08-30 14:08:56,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:08:57,683 INFO L130 PetriNetUnfolder]: 5691/9766 cut-off events. [2023-08-30 14:08:57,683 INFO L131 PetriNetUnfolder]: For 5614/5614 co-relation queries the response was YES. [2023-08-30 14:08:57,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24291 conditions, 9766 events. 5691/9766 cut-off events. For 5614/5614 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 68992 event pairs, 2100 based on Foata normal form. 61/8149 useless extension candidates. Maximal degree in co-relation 24174. Up to 7385 conditions per place. [2023-08-30 14:08:57,729 INFO L137 encePairwiseOnDemand]: 310/320 looper letters, 115 selfloop transitions, 21 changer transitions 0/143 dead transitions. [2023-08-30 14:08:57,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 143 transitions, 812 flow [2023-08-30 14:08:57,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:08:57,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:08:57,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 851 transitions. [2023-08-30 14:08:57,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4432291666666667 [2023-08-30 14:08:57,732 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 851 transitions. [2023-08-30 14:08:57,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 851 transitions. [2023-08-30 14:08:57,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:08:57,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 851 transitions. [2023-08-30 14:08:57,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 141.83333333333334) internal successors, (851), 6 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:57,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 320.0) internal successors, (2240), 7 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:57,737 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 320.0) internal successors, (2240), 7 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:57,738 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 280 flow. Second operand 6 states and 851 transitions. [2023-08-30 14:08:57,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 143 transitions, 812 flow [2023-08-30 14:08:57,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 143 transitions, 806 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:08:57,748 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 421 flow [2023-08-30 14:08:57,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=421, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2023-08-30 14:08:57,749 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 21 predicate places. [2023-08-30 14:08:57,749 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 421 flow [2023-08-30 14:08:57,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 124.18181818181819) internal successors, (1366), 11 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:57,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:57,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:08:57,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 14:08:57,955 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,SelfDestructingSolverStorable6 [2023-08-30 14:08:57,955 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:08:57,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:57,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1753310184, now seen corresponding path program 1 times [2023-08-30 14:08:57,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:57,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80252107] [2023-08-30 14:08:57,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:57,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:08:58,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:08:58,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80252107] [2023-08-30 14:08:58,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80252107] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:08:58,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:08:58,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:08:58,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139808899] [2023-08-30 14:08:58,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:08:58,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:08:58,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:08:58,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:08:58,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:08:58,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 320 [2023-08-30 14:08:58,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 421 flow. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:58,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:08:58,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 320 [2023-08-30 14:08:58,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:08:58,960 INFO L130 PetriNetUnfolder]: 7831/13440 cut-off events. [2023-08-30 14:08:58,960 INFO L131 PetriNetUnfolder]: For 13359/13359 co-relation queries the response was YES. [2023-08-30 14:08:58,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35389 conditions, 13440 events. 7831/13440 cut-off events. For 13359/13359 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 99476 event pairs, 4049 based on Foata normal form. 0/11745 useless extension candidates. Maximal degree in co-relation 35272. Up to 7420 conditions per place. [2023-08-30 14:08:59,028 INFO L137 encePairwiseOnDemand]: 313/320 looper letters, 94 selfloop transitions, 17 changer transitions 0/118 dead transitions. [2023-08-30 14:08:59,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 118 transitions, 784 flow [2023-08-30 14:08:59,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:08:59,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:08:59,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 519 transitions. [2023-08-30 14:08:59,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.540625 [2023-08-30 14:08:59,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 519 transitions. [2023-08-30 14:08:59,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 519 transitions. [2023-08-30 14:08:59,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:08:59,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 519 transitions. [2023-08-30 14:08:59,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:59,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:59,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:59,036 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 421 flow. Second operand 3 states and 519 transitions. [2023-08-30 14:08:59,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 118 transitions, 784 flow [2023-08-30 14:08:59,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 118 transitions, 784 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:08:59,057 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 540 flow [2023-08-30 14:08:59,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=540, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2023-08-30 14:08:59,058 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2023-08-30 14:08:59,059 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 540 flow [2023-08-30 14:08:59,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:08:59,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:59,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:08:59,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:08:59,060 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:08:59,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:59,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1753310155, now seen corresponding path program 1 times [2023-08-30 14:08:59,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:59,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330994845] [2023-08-30 14:08:59,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:59,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:08:59,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:08:59,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330994845] [2023-08-30 14:08:59,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330994845] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:08:59,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:08:59,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 14:08:59,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369872106] [2023-08-30 14:08:59,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:08:59,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:08:59,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:08:59,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:08:59,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:08:59,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 320 [2023-08-30 14:08:59,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 540 flow. Second operand has 7 states, 7 states have (on average 139.28571428571428) internal successors, (975), 7 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 14:08:59,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:08:59,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 320 [2023-08-30 14:08:59,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:09:01,062 INFO L130 PetriNetUnfolder]: 9942/17078 cut-off events. [2023-08-30 14:09:01,062 INFO L131 PetriNetUnfolder]: For 28794/28794 co-relation queries the response was YES. [2023-08-30 14:09:01,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48863 conditions, 17078 events. 9942/17078 cut-off events. For 28794/28794 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 132299 event pairs, 1441 based on Foata normal form. 231/15412 useless extension candidates. Maximal degree in co-relation 48749. Up to 7151 conditions per place. [2023-08-30 14:09:01,142 INFO L137 encePairwiseOnDemand]: 306/320 looper letters, 311 selfloop transitions, 74 changer transitions 0/392 dead transitions. [2023-08-30 14:09:01,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 392 transitions, 2435 flow [2023-08-30 14:09:01,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 14:09:01,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 14:09:01,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2421 transitions. [2023-08-30 14:09:01,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.504375 [2023-08-30 14:09:01,149 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2421 transitions. [2023-08-30 14:09:01,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2421 transitions. [2023-08-30 14:09:01,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:09:01,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2421 transitions. [2023-08-30 14:09:01,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 161.4) internal successors, (2421), 15 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:01,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 320.0) internal successors, (5120), 16 states have internal predecessors, (5120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:01,164 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 320.0) internal successors, (5120), 16 states have internal predecessors, (5120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:01,164 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 540 flow. Second operand 15 states and 2421 transitions. [2023-08-30 14:09:01,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 392 transitions, 2435 flow [2023-08-30 14:09:01,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 392 transitions, 2369 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:09:01,246 INFO L231 Difference]: Finished difference. Result has 98 places, 133 transitions, 1088 flow [2023-08-30 14:09:01,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1088, PETRI_PLACES=98, PETRI_TRANSITIONS=133} [2023-08-30 14:09:01,246 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 43 predicate places. [2023-08-30 14:09:01,246 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 133 transitions, 1088 flow [2023-08-30 14:09:01,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 139.28571428571428) internal successors, (975), 7 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 14:09:01,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:09:01,247 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 14:09:01,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:09:01,247 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:09:01,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:09:01,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1080949887, now seen corresponding path program 1 times [2023-08-30 14:09:01,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:09:01,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413289358] [2023-08-30 14:09:01,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:09:01,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:09:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:09:01,263 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:09:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:09:01,274 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:09:01,274 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:09:01,274 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-30 14:09:01,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-08-30 14:09:01,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-08-30 14:09:01,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-08-30 14:09:01,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-08-30 14:09:01,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-08-30 14:09:01,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-08-30 14:09:01,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-08-30 14:09:01,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-08-30 14:09:01,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-08-30 14:09:01,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-08-30 14:09:01,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-08-30 14:09:01,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-08-30 14:09:01,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-08-30 14:09:01,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-08-30 14:09:01,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-08-30 14:09:01,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-08-30 14:09:01,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:09:01,277 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:09:01,278 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:09:01,278 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:09:01,308 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:09:01,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 218 transitions, 466 flow [2023-08-30 14:09:01,362 INFO L130 PetriNetUnfolder]: 50/431 cut-off events. [2023-08-30 14:09:01,363 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:09:01,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 431 events. 50/431 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1493 event pairs, 1 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 287. Up to 16 conditions per place. [2023-08-30 14:09:01,367 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 218 transitions, 466 flow [2023-08-30 14:09:01,370 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 218 transitions, 466 flow [2023-08-30 14:09:01,370 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:09:01,370 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 218 transitions, 466 flow [2023-08-30 14:09:01,371 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 218 transitions, 466 flow [2023-08-30 14:09:01,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 218 transitions, 466 flow [2023-08-30 14:09:01,412 INFO L130 PetriNetUnfolder]: 50/431 cut-off events. [2023-08-30 14:09:01,412 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:09:01,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 431 events. 50/431 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1493 event pairs, 1 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 287. Up to 16 conditions per place. [2023-08-30 14:09:01,433 INFO L119 LiptonReduction]: Number of co-enabled transitions 23616 [2023-08-30 14:09:04,848 INFO L134 LiptonReduction]: Checked pairs total: 59630 [2023-08-30 14:09:04,848 INFO L136 LiptonReduction]: Total number of compositions: 181 [2023-08-30 14:09:04,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:09:04,851 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;@180ff8b2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:09:04,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-30 14:09:04,853 INFO L130 PetriNetUnfolder]: 1/12 cut-off events. [2023-08-30 14:09:04,853 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:09:04,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:09:04,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:09:04,854 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:09:04,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:09:04,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1245358397, now seen corresponding path program 1 times [2023-08-30 14:09:04,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:09:04,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035291285] [2023-08-30 14:09:04,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:09:04,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:09:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:09:04,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:09:04,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:09:04,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035291285] [2023-08-30 14:09:04,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035291285] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:09:04,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:09:04,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:09:04,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108776203] [2023-08-30 14:09:04,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:09:04,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:09:04,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:09:04,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:09:04,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:09:04,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 399 [2023-08-30 14:09:04,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 89 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:04,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:09:04,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 399 [2023-08-30 14:09:04,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:09:12,587 INFO L130 PetriNetUnfolder]: 99405/142637 cut-off events. [2023-08-30 14:09:12,588 INFO L131 PetriNetUnfolder]: For 2441/2441 co-relation queries the response was YES. [2023-08-30 14:09:12,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282268 conditions, 142637 events. 99405/142637 cut-off events. For 2441/2441 co-relation queries the response was YES. Maximal size of possible extension queue 3876. Compared 1084817 event pairs, 62063 based on Foata normal form. 15676/113153 useless extension candidates. Maximal degree in co-relation 28565. Up to 127007 conditions per place. [2023-08-30 14:09:13,127 INFO L137 encePairwiseOnDemand]: 374/399 looper letters, 99 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2023-08-30 14:09:13,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 111 transitions, 456 flow [2023-08-30 14:09:13,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:09:13,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:09:13,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 694 transitions. [2023-08-30 14:09:13,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797827903091061 [2023-08-30 14:09:13,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 694 transitions. [2023-08-30 14:09:13,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 694 transitions. [2023-08-30 14:09:13,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:09:13,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 694 transitions. [2023-08-30 14:09:13,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:13,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:13,133 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:13,133 INFO L175 Difference]: Start difference. First operand has 73 places, 89 transitions, 208 flow. Second operand 3 states and 694 transitions. [2023-08-30 14:09:13,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 111 transitions, 456 flow [2023-08-30 14:09:13,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 111 transitions, 456 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:09:13,137 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 192 flow [2023-08-30 14:09:13,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2023-08-30 14:09:13,138 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 4 predicate places. [2023-08-30 14:09:13,138 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 192 flow [2023-08-30 14:09:13,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:13,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:09:13,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:09:13,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 14:09:13,139 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:09:13,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:09:13,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1245358395, now seen corresponding path program 1 times [2023-08-30 14:09:13,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:09:13,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193476266] [2023-08-30 14:09:13,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:09:13,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:09:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:09:13,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:09:13,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:09:13,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193476266] [2023-08-30 14:09:13,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193476266] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:09:13,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:09:13,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:09:13,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401419174] [2023-08-30 14:09:13,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:09:13,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:09:13,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:09:13,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:09:13,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:09:13,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 399 [2023-08-30 14:09:13,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:13,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:09:13,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 399 [2023-08-30 14:09:13,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:09:20,212 INFO L130 PetriNetUnfolder]: 91384/130891 cut-off events. [2023-08-30 14:09:20,212 INFO L131 PetriNetUnfolder]: For 17130/17130 co-relation queries the response was YES. [2023-08-30 14:09:20,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268386 conditions, 130891 events. 91384/130891 cut-off events. For 17130/17130 co-relation queries the response was YES. Maximal size of possible extension queue 3498. Compared 975268 event pairs, 91144 based on Foata normal form. 2953/96981 useless extension candidates. Maximal degree in co-relation 268284. Up to 127022 conditions per place. [2023-08-30 14:09:20,764 INFO L137 encePairwiseOnDemand]: 397/399 looper letters, 59 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2023-08-30 14:09:20,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 69 transitions, 302 flow [2023-08-30 14:09:20,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:09:20,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:09:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 612 transitions. [2023-08-30 14:09:20,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5112781954887218 [2023-08-30 14:09:20,766 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 612 transitions. [2023-08-30 14:09:20,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 612 transitions. [2023-08-30 14:09:20,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:09:20,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 612 transitions. [2023-08-30 14:09:20,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:20,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:20,770 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:20,770 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 192 flow. Second operand 3 states and 612 transitions. [2023-08-30 14:09:20,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 69 transitions, 302 flow [2023-08-30 14:09:20,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 69 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:09:20,784 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 180 flow [2023-08-30 14:09:20,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2023-08-30 14:09:20,785 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2023-08-30 14:09:20,785 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 180 flow [2023-08-30 14:09:20,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:20,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:09:20,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:09:20,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:09:20,785 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:09:20,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:09:20,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1496931880, now seen corresponding path program 1 times [2023-08-30 14:09:20,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:09:20,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313564929] [2023-08-30 14:09:20,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:09:20,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:09:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:09:20,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:09:20,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:09:20,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313564929] [2023-08-30 14:09:20,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313564929] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:09:20,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:09:20,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:09:20,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631507346] [2023-08-30 14:09:20,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:09:20,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:09:20,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:09:20,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:09:20,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:09:20,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 399 [2023-08-30 14:09:20,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 176.2) internal successors, (881), 5 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:20,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:09:20,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 399 [2023-08-30 14:09:20,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:09:31,908 INFO L130 PetriNetUnfolder]: 142622/206015 cut-off events. [2023-08-30 14:09:31,909 INFO L131 PetriNetUnfolder]: For 9664/9664 co-relation queries the response was YES. [2023-08-30 14:09:32,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417062 conditions, 206015 events. 142622/206015 cut-off events. For 9664/9664 co-relation queries the response was YES. Maximal size of possible extension queue 5579. Compared 1660177 event pairs, 35636 based on Foata normal form. 0/148778 useless extension candidates. Maximal degree in co-relation 417051. Up to 124448 conditions per place. [2023-08-30 14:09:32,916 INFO L137 encePairwiseOnDemand]: 386/399 looper letters, 182 selfloop transitions, 24 changer transitions 0/215 dead transitions. [2023-08-30 14:09:32,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 215 transitions, 939 flow [2023-08-30 14:09:32,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:09:32,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:09:32,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1257 transitions. [2023-08-30 14:09:32,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525062656641604 [2023-08-30 14:09:32,919 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1257 transitions. [2023-08-30 14:09:32,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1257 transitions. [2023-08-30 14:09:32,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:09:32,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1257 transitions. [2023-08-30 14:09:32,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 209.5) internal successors, (1257), 6 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:32,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:32,927 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:32,927 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 180 flow. Second operand 6 states and 1257 transitions. [2023-08-30 14:09:32,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 215 transitions, 939 flow [2023-08-30 14:09:32,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 215 transitions, 938 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:09:32,948 INFO L231 Difference]: Finished difference. Result has 85 places, 92 transitions, 351 flow [2023-08-30 14:09:32,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=351, PETRI_PLACES=85, PETRI_TRANSITIONS=92} [2023-08-30 14:09:32,949 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 12 predicate places. [2023-08-30 14:09:32,949 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 92 transitions, 351 flow [2023-08-30 14:09:32,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 176.2) internal successors, (881), 5 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:32,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:09:32,949 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:09:32,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:09:32,949 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:09:32,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:09:32,950 INFO L85 PathProgramCache]: Analyzing trace with hash -227813947, now seen corresponding path program 1 times [2023-08-30 14:09:32,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:09:32,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544341154] [2023-08-30 14:09:32,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:09:32,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:09:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:09:32,983 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 14:09:32,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:09:32,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544341154] [2023-08-30 14:09:32,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544341154] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:09:32,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:09:32,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:09:32,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571054457] [2023-08-30 14:09:32,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:09:32,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:09:32,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:09:32,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:09:32,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:09:32,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 399 [2023-08-30 14:09:32,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 92 transitions, 351 flow. Second operand has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:32,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:09:32,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 399 [2023-08-30 14:09:32,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:09:44,650 INFO L130 PetriNetUnfolder]: 134254/192462 cut-off events. [2023-08-30 14:09:44,651 INFO L131 PetriNetUnfolder]: For 70593/70593 co-relation queries the response was YES. [2023-08-30 14:09:45,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462700 conditions, 192462 events. 134254/192462 cut-off events. For 70593/70593 co-relation queries the response was YES. Maximal size of possible extension queue 5309. Compared 1530614 event pairs, 30519 based on Foata normal form. 0/151329 useless extension candidates. Maximal degree in co-relation 462683. Up to 167923 conditions per place. [2023-08-30 14:09:45,966 INFO L137 encePairwiseOnDemand]: 395/399 looper letters, 124 selfloop transitions, 5 changer transitions 0/138 dead transitions. [2023-08-30 14:09:45,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 138 transitions, 751 flow [2023-08-30 14:09:45,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:09:45,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:09:45,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 648 transitions. [2023-08-30 14:09:45,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5413533834586466 [2023-08-30 14:09:45,968 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 648 transitions. [2023-08-30 14:09:45,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 648 transitions. [2023-08-30 14:09:45,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:09:45,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 648 transitions. [2023-08-30 14:09:45,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:45,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:45,972 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:45,972 INFO L175 Difference]: Start difference. First operand has 85 places, 92 transitions, 351 flow. Second operand 3 states and 648 transitions. [2023-08-30 14:09:45,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 138 transitions, 751 flow [2023-08-30 14:09:46,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 138 transitions, 751 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:09:46,084 INFO L231 Difference]: Finished difference. Result has 87 places, 92 transitions, 368 flow [2023-08-30 14:09:46,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=368, PETRI_PLACES=87, PETRI_TRANSITIONS=92} [2023-08-30 14:09:46,085 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 14 predicate places. [2023-08-30 14:09:46,085 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 92 transitions, 368 flow [2023-08-30 14:09:46,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:46,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:09:46,085 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:09:46,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:09:46,086 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:09:46,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:09:46,086 INFO L85 PathProgramCache]: Analyzing trace with hash -460810766, now seen corresponding path program 1 times [2023-08-30 14:09:46,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:09:46,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113419347] [2023-08-30 14:09:46,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:09:46,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:09:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:09:46,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:09:46,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:09:46,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113419347] [2023-08-30 14:09:46,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113419347] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:09:46,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576996154] [2023-08-30 14:09:46,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:09:46,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:09:46,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:09:46,185 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:09:46,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 14:09:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:09:46,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 14:09:46,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:09:46,270 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:09:46,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:09:46,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:09:46,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:09:46,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:09:46,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:09:46,373 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_142 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_142) c_t_funThread1of3ForFork0_~p~0.base) c_t_funThread1of3ForFork0_~p~0.offset)))) is different from false [2023-08-30 14:09:46,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 14:09:46,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576996154] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:09:46,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:09:46,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-08-30 14:09:46,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015985322] [2023-08-30 14:09:46,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:09:46,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 14:09:46,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:09:46,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 14:09:46,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=66, Unknown=1, NotChecked=16, Total=110 [2023-08-30 14:09:46,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 399 [2023-08-30 14:09:46,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 92 transitions, 368 flow. Second operand has 11 states, 11 states have (on average 154.1818181818182) internal successors, (1696), 11 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:09:46,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:09:46,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 399 [2023-08-30 14:09:46,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:09:46,766 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_142 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_142) c_t_funThread1of3ForFork0_~p~0.base) c_t_funThread1of3ForFork0_~p~0.offset)))) (forall ((v_ArrVal_142 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_142) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483650)))) is different from false [2023-08-30 14:10:04,712 INFO L130 PetriNetUnfolder]: 195964/281832 cut-off events. [2023-08-30 14:10:04,712 INFO L131 PetriNetUnfolder]: For 146225/146225 co-relation queries the response was YES. [2023-08-30 14:10:05,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685104 conditions, 281832 events. 195964/281832 cut-off events. For 146225/146225 co-relation queries the response was YES. Maximal size of possible extension queue 7795. Compared 2316764 event pairs, 41430 based on Foata normal form. 421/219792 useless extension candidates. Maximal degree in co-relation 685084. Up to 157988 conditions per place. [2023-08-30 14:10:06,648 INFO L137 encePairwiseOnDemand]: 367/399 looper letters, 303 selfloop transitions, 135 changer transitions 0/447 dead transitions. [2023-08-30 14:10:06,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 447 transitions, 2400 flow [2023-08-30 14:10:06,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 14:10:06,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 14:10:06,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2694 transitions. [2023-08-30 14:10:06,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45012531328320804 [2023-08-30 14:10:06,654 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2694 transitions. [2023-08-30 14:10:06,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2694 transitions. [2023-08-30 14:10:06,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:06,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2694 transitions. [2023-08-30 14:10:06,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 179.6) internal successors, (2694), 15 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:06,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 399.0) internal successors, (6384), 16 states have internal predecessors, (6384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:06,668 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 399.0) internal successors, (6384), 16 states have internal predecessors, (6384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:06,668 INFO L175 Difference]: Start difference. First operand has 87 places, 92 transitions, 368 flow. Second operand 15 states and 2694 transitions. [2023-08-30 14:10:06,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 447 transitions, 2400 flow [2023-08-30 14:10:07,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 447 transitions, 2378 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:10:07,475 INFO L231 Difference]: Finished difference. Result has 111 places, 221 transitions, 1598 flow [2023-08-30 14:10:07,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1598, PETRI_PLACES=111, PETRI_TRANSITIONS=221} [2023-08-30 14:10:07,476 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 38 predicate places. [2023-08-30 14:10:07,476 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 221 transitions, 1598 flow [2023-08-30 14:10:07,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 154.1818181818182) internal successors, (1696), 11 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:07,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:07,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:10:07,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 14:10:07,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:10:07,681 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:10:07,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:07,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1179364591, now seen corresponding path program 1 times [2023-08-30 14:10:07,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:07,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505043604] [2023-08-30 14:10:07,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:07,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:07,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:10:07,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:07,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505043604] [2023-08-30 14:10:07,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505043604] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:10:07,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:10:07,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:10:07,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472428178] [2023-08-30 14:10:07,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:10:07,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:10:07,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:07,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:10:07,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:10:07,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 399 [2023-08-30 14:10:07,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 221 transitions, 1598 flow. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:07,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:07,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 399 [2023-08-30 14:10:07,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:40,617 INFO L130 PetriNetUnfolder]: 225152/326704 cut-off events. [2023-08-30 14:10:40,617 INFO L131 PetriNetUnfolder]: For 858276/858412 co-relation queries the response was YES. [2023-08-30 14:10:42,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1265507 conditions, 326704 events. 225152/326704 cut-off events. For 858276/858412 co-relation queries the response was YES. Maximal size of possible extension queue 9178. Compared 2777265 event pairs, 130765 based on Foata normal form. 0/270179 useless extension candidates. Maximal degree in co-relation 1265475. Up to 221829 conditions per place. [2023-08-30 14:10:44,586 INFO L137 encePairwiseOnDemand]: 392/399 looper letters, 259 selfloop transitions, 34 changer transitions 0/302 dead transitions. [2023-08-30 14:10:44,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 302 transitions, 2744 flow [2023-08-30 14:10:44,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:10:44,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:10:44,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 645 transitions. [2023-08-30 14:10:44,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5388471177944862 [2023-08-30 14:10:44,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 645 transitions. [2023-08-30 14:10:44,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 645 transitions. [2023-08-30 14:10:44,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:44,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 645 transitions. [2023-08-30 14:10:44,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:44,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:44,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:44,593 INFO L175 Difference]: Start difference. First operand has 111 places, 221 transitions, 1598 flow. Second operand 3 states and 645 transitions. [2023-08-30 14:10:44,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 302 transitions, 2744 flow [2023-08-30 14:11:19,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 302 transitions, 2602 flow, removed 66 selfloop flow, removed 1 redundant places. [2023-08-30 14:11:19,853 INFO L231 Difference]: Finished difference. Result has 114 places, 237 transitions, 1790 flow [2023-08-30 14:11:19,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=1484, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1790, PETRI_PLACES=114, PETRI_TRANSITIONS=237} [2023-08-30 14:11:19,854 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 41 predicate places. [2023-08-30 14:11:19,854 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 237 transitions, 1790 flow [2023-08-30 14:11:19,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:19,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:19,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:11:19,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 14:11:19,855 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:11:19,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:19,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1179364606, now seen corresponding path program 1 times [2023-08-30 14:11:19,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:19,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681201939] [2023-08-30 14:11:19,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:19,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:11:19,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:19,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681201939] [2023-08-30 14:11:19,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681201939] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:19,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:19,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 14:11:19,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862882080] [2023-08-30 14:11:19,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:19,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:11:19,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:19,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:11:19,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:11:20,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 399 [2023-08-30 14:11:20,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 237 transitions, 1790 flow. Second operand has 7 states, 7 states have (on average 172.28571428571428) internal successors, (1206), 7 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:20,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:20,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 399 [2023-08-30 14:11:20,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:12:00,376 INFO L130 PetriNetUnfolder]: 295887/428564 cut-off events. [2023-08-30 14:12:00,376 INFO L131 PetriNetUnfolder]: For 1284276/1284402 co-relation queries the response was YES. [2023-08-30 14:12:02,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1700346 conditions, 428564 events. 295887/428564 cut-off events. For 1284276/1284402 co-relation queries the response was YES. Maximal size of possible extension queue 12331. Compared 3756762 event pairs, 50681 based on Foata normal form. 3591/361253 useless extension candidates. Maximal degree in co-relation 1700313. Up to 202570 conditions per place. [2023-08-30 14:12:04,525 INFO L137 encePairwiseOnDemand]: 383/399 looper letters, 574 selfloop transitions, 189 changer transitions 0/772 dead transitions. [2023-08-30 14:12:04,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 772 transitions, 6626 flow [2023-08-30 14:12:04,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 14:12:04,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 14:12:04,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3088 transitions. [2023-08-30 14:12:04,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159565580618212 [2023-08-30 14:12:04,533 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3088 transitions. [2023-08-30 14:12:04,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3088 transitions. [2023-08-30 14:12:04,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:12:04,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3088 transitions. [2023-08-30 14:12:04,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 205.86666666666667) internal successors, (3088), 15 states have internal predecessors, (3088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:04,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 399.0) internal successors, (6384), 16 states have internal predecessors, (6384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:04,548 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 399.0) internal successors, (6384), 16 states have internal predecessors, (6384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:04,548 INFO L175 Difference]: Start difference. First operand has 114 places, 237 transitions, 1790 flow. Second operand 15 states and 3088 transitions. [2023-08-30 14:12:04,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 772 transitions, 6626 flow [2023-08-30 14:13:13,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 772 transitions, 6492 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:13:13,025 INFO L231 Difference]: Finished difference. Result has 133 places, 350 transitions, 3355 flow [2023-08-30 14:13:13,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=1722, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3355, PETRI_PLACES=133, PETRI_TRANSITIONS=350} [2023-08-30 14:13:13,026 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 60 predicate places. [2023-08-30 14:13:13,026 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 350 transitions, 3355 flow [2023-08-30 14:13:13,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 172.28571428571428) internal successors, (1206), 7 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:13,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:13:13,027 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:13:13,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 14:13:13,027 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:13:13,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:13:13,028 INFO L85 PathProgramCache]: Analyzing trace with hash 123903981, now seen corresponding path program 1 times [2023-08-30 14:13:13,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:13:13,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818061686] [2023-08-30 14:13:13,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:13:13,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:13:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:13:13,133 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 14:13:13,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:13:13,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818061686] [2023-08-30 14:13:13,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818061686] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:13:13,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986702208] [2023-08-30 14:13:13,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:13:13,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:13:13,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:13:13,141 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:13:13,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 14:13:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:13:13,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 14:13:13,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:13:13,235 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:13:13,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:13:13,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:13:13,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:13:13,320 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 14:13:13,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:13:13,346 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_192 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_192) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483647)) is different from false [2023-08-30 14:13:13,356 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 14:13:13,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986702208] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:13:13,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:13:13,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-08-30 14:13:13,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515314408] [2023-08-30 14:13:13,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:13:13,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 14:13:13,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:13:13,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 14:13:13,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=66, Unknown=1, NotChecked=16, Total=110 [2023-08-30 14:13:13,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 399 [2023-08-30 14:13:13,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 350 transitions, 3355 flow. Second operand has 11 states, 11 states have (on average 154.45454545454547) internal successors, (1699), 11 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:13,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:13:13,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 399 [2023-08-30 14:13:13,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:09,224 INFO L130 PetriNetUnfolder]: 330666/485178 cut-off events. [2023-08-30 14:14:09,224 INFO L131 PetriNetUnfolder]: For 1860044/1860494 co-relation queries the response was YES. [2023-08-30 14:14:12,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2066488 conditions, 485178 events. 330666/485178 cut-off events. For 1860044/1860494 co-relation queries the response was YES. Maximal size of possible extension queue 14905. Compared 4427975 event pairs, 69139 based on Foata normal form. 0/410812 useless extension candidates. Maximal degree in co-relation 2066447. Up to 271880 conditions per place. [2023-08-30 14:14:14,221 INFO L137 encePairwiseOnDemand]: 385/399 looper letters, 481 selfloop transitions, 321 changer transitions 0/811 dead transitions. [2023-08-30 14:14:14,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 811 transitions, 8971 flow [2023-08-30 14:14:14,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 14:14:14,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 14:14:14,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1816 transitions. [2023-08-30 14:14:14,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45513784461152884 [2023-08-30 14:14:14,224 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1816 transitions. [2023-08-30 14:14:14,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1816 transitions. [2023-08-30 14:14:14,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:14,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1816 transitions. [2023-08-30 14:14:14,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:14,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 399.0) internal successors, (4389), 11 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:14,233 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 399.0) internal successors, (4389), 11 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:14,233 INFO L175 Difference]: Start difference. First operand has 133 places, 350 transitions, 3355 flow. Second operand 10 states and 1816 transitions. [2023-08-30 14:14:14,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 811 transitions, 8971 flow [2023-08-30 14:16:13,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 811 transitions, 8824 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-08-30 14:16:13,566 INFO L231 Difference]: Finished difference. Result has 143 places, 537 transitions, 6327 flow [2023-08-30 14:16:13,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=3274, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6327, PETRI_PLACES=143, PETRI_TRANSITIONS=537} [2023-08-30 14:16:13,567 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 70 predicate places. [2023-08-30 14:16:13,567 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 537 transitions, 6327 flow [2023-08-30 14:16:13,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 154.45454545454547) internal successors, (1699), 11 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:13,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:13,568 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:16:13,576 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 14:16:13,773 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,SelfDestructingSolverStorable17 [2023-08-30 14:16:13,773 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:16:13,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:13,774 INFO L85 PathProgramCache]: Analyzing trace with hash 556923950, now seen corresponding path program 1 times [2023-08-30 14:16:13,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:13,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524641983] [2023-08-30 14:16:13,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:13,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:13,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:16:13,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:13,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524641983] [2023-08-30 14:16:13,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524641983] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:16:13,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219232118] [2023-08-30 14:16:13,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:13,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:16:13,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:16:13,895 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:16:13,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 14:16:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:13,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 14:16:13,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:16:13,998 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:16:13,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:16:14,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:16:14,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:16:14,143 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 14:16:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:16:14,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:16:14,242 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_226 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_226) |c_~#global~0.base|) |c_~#global~0.offset|)))) is different from false [2023-08-30 14:16:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 14:16:14,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219232118] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:16:14,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:16:14,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-08-30 14:16:14,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846383402] [2023-08-30 14:16:14,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:16:14,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 14:16:14,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:14,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 14:16:14,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=186, Unknown=3, NotChecked=28, Total=272 [2023-08-30 14:16:14,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 399 [2023-08-30 14:16:14,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 537 transitions, 6327 flow. Second operand has 17 states, 17 states have (on average 147.94117647058823) internal successors, (2515), 17 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:14,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:14,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 399 [2023-08-30 14:16:14,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:43,115 INFO L130 PetriNetUnfolder]: 433511/636483 cut-off events. [2023-08-30 14:17:43,115 INFO L131 PetriNetUnfolder]: For 3064450/3064830 co-relation queries the response was YES. [2023-08-30 14:17:47,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2894109 conditions, 636483 events. 433511/636483 cut-off events. For 3064450/3064830 co-relation queries the response was YES. Maximal size of possible extension queue 20203. Compared 5971048 event pairs, 101874 based on Foata normal form. 8886/576878 useless extension candidates. Maximal degree in co-relation 2894063. Up to 263661 conditions per place. [2023-08-30 14:17:50,757 INFO L137 encePairwiseOnDemand]: 381/399 looper letters, 1127 selfloop transitions, 807 changer transitions 0/1943 dead transitions. [2023-08-30 14:17:50,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 1943 transitions, 23849 flow [2023-08-30 14:17:50,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-30 14:17:50,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-30 14:17:50,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5245 transitions. [2023-08-30 14:17:50,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43817878028404345 [2023-08-30 14:17:50,763 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5245 transitions. [2023-08-30 14:17:50,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5245 transitions. [2023-08-30 14:17:50,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:50,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5245 transitions. [2023-08-30 14:17:50,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 174.83333333333334) internal successors, (5245), 30 states have internal predecessors, (5245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:50,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 399.0) internal successors, (12369), 31 states have internal predecessors, (12369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:50,781 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 399.0) internal successors, (12369), 31 states have internal predecessors, (12369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:50,781 INFO L175 Difference]: Start difference. First operand has 143 places, 537 transitions, 6327 flow. Second operand 30 states and 5245 transitions. [2023-08-30 14:17:50,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 1943 transitions, 23849 flow Killed by 15