./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/triangular-longest-1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/pthread/triangular-longest-1.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 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 04:56:54,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 04:56:54,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 04:56:54,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 04:56:54,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 04:56:54,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 04:56:54,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 04:56:54,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 04:56:54,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 04:56:54,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 04:56:54,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 04:56:54,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 04:56:54,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 04:56:54,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 04:56:54,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 04:56:54,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 04:56:54,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 04:56:54,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 04:56:54,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 04:56:54,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 04:56:54,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 04:56:54,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 04:56:54,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 04:56:54,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 04:56:54,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 04:56:54,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 04:56:54,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 04:56:54,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 04:56:54,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 04:56:54,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 04:56:54,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 04:56:54,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 04:56:54,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 04:56:54,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 04:56:54,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 04:56:54,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 04:56:54,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 04:56:54,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 04:56:54,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 04:56:54,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 04:56:54,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 04:56:54,208 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 04:56:54,236 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 04:56:54,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 04:56:54,237 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 04:56:54,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 04:56:54,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 04:56:54,238 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 04:56:54,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 04:56:54,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 04:56:54,239 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 04:56:54,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 04:56:54,239 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 04:56:54,240 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 04:56:54,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 04:56:54,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 04:56:54,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 04:56:54,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 04:56:54,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 04:56:54,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 04:56:54,241 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 04:56:54,241 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 04:56:54,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 04:56:54,241 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 04:56:54,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 04:56:54,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 04:56:54,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 04:56:54,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 04:56:54,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:56:54,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 04:56:54,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 04:56:54,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 04:56:54,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 04:56:54,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 04:56:54,243 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 04:56:54,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 04:56:54,243 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 04:56:54,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 04:56:54,243 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 04:56:54,243 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 04:56:54,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 04:56:54,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 04:56:54,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 04:56:54,480 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 04:56:54,481 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 04:56:54,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-1.i [2023-09-01 04:56:55,399 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 04:56:55,596 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 04:56:55,597 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i [2023-09-01 04:56:55,605 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6156ebfd2/62cda778b4b54939910216398366c954/FLAGa4a078dba [2023-09-01 04:56:55,616 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6156ebfd2/62cda778b4b54939910216398366c954 [2023-09-01 04:56:55,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 04:56:55,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 04:56:55,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 04:56:55,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 04:56:55,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 04:56:55,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:56:55" (1/1) ... [2023-09-01 04:56:55,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79ea4efc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:55, skipping insertion in model container [2023-09-01 04:56:55,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:56:55" (1/1) ... [2023-09-01 04:56:55,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 04:56:55,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 04:56:55,903 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i[30962,30975] [2023-09-01 04:56:55,904 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:56:55,911 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 04:56:55,966 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i[30962,30975] [2023-09-01 04:56:55,968 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:56:55,991 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 04:56:55,991 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 04:56:55,996 INFO L208 MainTranslator]: Completed translation [2023-09-01 04:56:55,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:55 WrapperNode [2023-09-01 04:56:55,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 04:56:55,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 04:56:55,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 04:56:55,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 04:56:56,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:55" (1/1) ... [2023-09-01 04:56:56,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:55" (1/1) ... [2023-09-01 04:56:56,030 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2023-09-01 04:56:56,030 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 04:56:56,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 04:56:56,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 04:56:56,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 04:56:56,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:55" (1/1) ... [2023-09-01 04:56:56,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:55" (1/1) ... [2023-09-01 04:56:56,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:55" (1/1) ... [2023-09-01 04:56:56,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:55" (1/1) ... [2023-09-01 04:56:56,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:55" (1/1) ... [2023-09-01 04:56:56,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:55" (1/1) ... [2023-09-01 04:56:56,054 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:55" (1/1) ... [2023-09-01 04:56:56,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:55" (1/1) ... [2023-09-01 04:56:56,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 04:56:56,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 04:56:56,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 04:56:56,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 04:56:56,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:55" (1/1) ... [2023-09-01 04:56:56,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:56:56,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:56:56,091 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) [2023-09-01 04:56:56,097 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 [2023-09-01 04:56:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-09-01 04:56:56,117 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-09-01 04:56:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-09-01 04:56:56,117 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-09-01 04:56:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 04:56:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 04:56:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 04:56:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 04:56:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 04:56:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 04:56:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 04:56:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 04:56:56,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 04:56:56,119 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 04:56:56,265 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 04:56:56,267 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 04:56:56,386 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 04:56:56,403 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 04:56:56,404 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 04:56:56,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:56:56 BoogieIcfgContainer [2023-09-01 04:56:56,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 04:56:56,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 04:56:56,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 04:56:56,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 04:56:56,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 04:56:55" (1/3) ... [2023-09-01 04:56:56,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114be7f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:56:56, skipping insertion in model container [2023-09-01 04:56:56,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:55" (2/3) ... [2023-09-01 04:56:56,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114be7f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:56:56, skipping insertion in model container [2023-09-01 04:56:56,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:56:56" (3/3) ... [2023-09-01 04:56:56,413 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2023-09-01 04:56:56,420 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 04:56:56,428 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 04:56:56,429 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 04:56:56,429 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 04:56:56,472 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 04:56:56,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 77 transitions, 164 flow [2023-09-01 04:56:56,547 INFO L130 PetriNetUnfolder]: 5/75 cut-off events. [2023-09-01 04:56:56,547 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:56:56,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 75 events. 5/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2023-09-01 04:56:56,555 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 77 transitions, 164 flow [2023-09-01 04:56:56,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 75 transitions, 156 flow [2023-09-01 04:56:56,561 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:56:56,567 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 75 transitions, 156 flow [2023-09-01 04:56:56,570 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 75 transitions, 156 flow [2023-09-01 04:56:56,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 75 transitions, 156 flow [2023-09-01 04:56:56,586 INFO L130 PetriNetUnfolder]: 5/75 cut-off events. [2023-09-01 04:56:56,586 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:56:56,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 75 events. 5/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2023-09-01 04:56:56,589 INFO L119 LiptonReduction]: Number of co-enabled transitions 1802 [2023-09-01 04:56:58,284 INFO L134 LiptonReduction]: Checked pairs total: 1843 [2023-09-01 04:56:58,284 INFO L136 LiptonReduction]: Total number of compositions: 71 [2023-09-01 04:56:58,300 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 04:56:58,306 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;@1351661b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:56:58,306 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-09-01 04:56:58,313 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2023-09-01 04:56:58,313 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:56:58,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:58,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 04:56:58,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:58,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:58,319 INFO L85 PathProgramCache]: Analyzing trace with hash 9842129, now seen corresponding path program 1 times [2023-09-01 04:56:58,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:58,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96539614] [2023-09-01 04:56:58,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:58,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:58,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:58,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:58,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96539614] [2023-09-01 04:56:58,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96539614] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:56:58,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:56:58,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:56:58,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203226731] [2023-09-01 04:56:58,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:56:58,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:56:58,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:58,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:56:58,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:56:58,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 148 [2023-09-01 04:56:58,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:58,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:58,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 148 [2023-09-01 04:56:58,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:58,645 INFO L130 PetriNetUnfolder]: 300/479 cut-off events. [2023-09-01 04:56:58,645 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 04:56:58,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 479 events. 300/479 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1808 event pairs, 115 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 964. Up to 256 conditions per place. [2023-09-01 04:56:58,650 INFO L137 encePairwiseOnDemand]: 140/148 looper letters, 26 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2023-09-01 04:56:58,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 30 transitions, 126 flow [2023-09-01 04:56:58,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:56:58,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:56:58,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2023-09-01 04:56:58,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225225225225225 [2023-09-01 04:56:58,659 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2023-09-01 04:56:58,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2023-09-01 04:56:58,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:58,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2023-09-01 04:56:58,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:58,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:58,667 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:58,669 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 48 flow. Second operand 3 states and 232 transitions. [2023-09-01 04:56:58,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 30 transitions, 126 flow [2023-09-01 04:56:58,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:56:58,672 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 70 flow [2023-09-01 04:56:58,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2023-09-01 04:56:58,675 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2023-09-01 04:56:58,676 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 70 flow [2023-09-01 04:56:58,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:58,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:58,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 04:56:58,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 04:56:58,677 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:58,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:58,677 INFO L85 PathProgramCache]: Analyzing trace with hash 9842130, now seen corresponding path program 1 times [2023-09-01 04:56:58,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:58,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058963506] [2023-09-01 04:56:58,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:58,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:58,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:58,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:58,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058963506] [2023-09-01 04:56:58,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058963506] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:56:58,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:56:58,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:56:58,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248723543] [2023-09-01 04:56:58,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:56:58,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:56:58,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:58,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:56:58,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:56:58,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 148 [2023-09-01 04:56:58,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:58,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:58,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 148 [2023-09-01 04:56:58,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:58,812 INFO L130 PetriNetUnfolder]: 291/480 cut-off events. [2023-09-01 04:56:58,812 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-09-01 04:56:58,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1123 conditions, 480 events. 291/480 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1878 event pairs, 99 based on Foata normal form. 17/325 useless extension candidates. Maximal degree in co-relation 1111. Up to 281 conditions per place. [2023-09-01 04:56:58,817 INFO L137 encePairwiseOnDemand]: 143/148 looper letters, 27 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-09-01 04:56:58,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 33 transitions, 170 flow [2023-09-01 04:56:58,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:56:58,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:56:58,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2023-09-01 04:56:58,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2023-09-01 04:56:58,822 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2023-09-01 04:56:58,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2023-09-01 04:56:58,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:58,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2023-09-01 04:56:58,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:58,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:58,827 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:58,827 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 70 flow. Second operand 3 states and 225 transitions. [2023-09-01 04:56:58,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 33 transitions, 170 flow [2023-09-01 04:56:58,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 33 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:56:58,830 INFO L231 Difference]: Finished difference. Result has 26 places, 24 transitions, 100 flow [2023-09-01 04:56:58,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=26, PETRI_TRANSITIONS=24} [2023-09-01 04:56:58,830 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2023-09-01 04:56:58,831 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 24 transitions, 100 flow [2023-09-01 04:56:58,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:58,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:58,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 04:56:58,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 04:56:58,831 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:58,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:58,832 INFO L85 PathProgramCache]: Analyzing trace with hash 9842166, now seen corresponding path program 1 times [2023-09-01 04:56:58,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:58,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269556281] [2023-09-01 04:56:58,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:58,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:58,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:58,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:58,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269556281] [2023-09-01 04:56:58,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269556281] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:56:58,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:56:58,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:56:58,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104539152] [2023-09-01 04:56:58,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:56:58,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:56:58,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:58,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:56:58,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:56:58,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 148 [2023-09-01 04:56:58,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:58,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:58,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 148 [2023-09-01 04:56:58,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:58,992 INFO L130 PetriNetUnfolder]: 416/697 cut-off events. [2023-09-01 04:56:58,992 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2023-09-01 04:56:58,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1761 conditions, 697 events. 416/697 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3177 event pairs, 223 based on Foata normal form. 0/471 useless extension candidates. Maximal degree in co-relation 1748. Up to 481 conditions per place. [2023-09-01 04:56:58,995 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-09-01 04:56:58,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 43 transitions, 269 flow [2023-09-01 04:56:58,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:56:58,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:56:58,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2023-09-01 04:56:58,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2023-09-01 04:56:58,997 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2023-09-01 04:56:58,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2023-09-01 04:56:58,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:58,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2023-09-01 04:56:58,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:58,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:58,999 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:58,999 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 100 flow. Second operand 3 states and 225 transitions. [2023-09-01 04:56:58,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 43 transitions, 269 flow [2023-09-01 04:56:59,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 43 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:56:59,001 INFO L231 Difference]: Finished difference. Result has 28 places, 25 transitions, 108 flow [2023-09-01 04:56:59,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=28, PETRI_TRANSITIONS=25} [2023-09-01 04:56:59,002 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-09-01 04:56:59,002 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 25 transitions, 108 flow [2023-09-01 04:56:59,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:59,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:59,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 04:56:59,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 04:56:59,003 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:59,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:59,003 INFO L85 PathProgramCache]: Analyzing trace with hash 305107525, now seen corresponding path program 1 times [2023-09-01 04:56:59,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:59,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353499693] [2023-09-01 04:56:59,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:59,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:59,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:59,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:59,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353499693] [2023-09-01 04:56:59,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353499693] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:56:59,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853534748] [2023-09-01 04:56:59,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:59,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:56:59,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:56:59,048 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) [2023-09-01 04:56:59,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 04:56:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:59,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:56:59,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:56:59,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:59,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:56:59,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853534748] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:56:59,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:56:59,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 04:56:59,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42634893] [2023-09-01 04:56:59,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:56:59,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:56:59,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:59,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:56:59,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:56:59,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 148 [2023-09-01 04:56:59,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:59,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:59,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 148 [2023-09-01 04:56:59,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:59,270 INFO L130 PetriNetUnfolder]: 361/610 cut-off events. [2023-09-01 04:56:59,270 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2023-09-01 04:56:59,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1680 conditions, 610 events. 361/610 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2863 event pairs, 18 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 1666. Up to 336 conditions per place. [2023-09-01 04:56:59,273 INFO L137 encePairwiseOnDemand]: 145/148 looper letters, 52 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-09-01 04:56:59,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 54 transitions, 330 flow [2023-09-01 04:56:59,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 04:56:59,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 04:56:59,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2023-09-01 04:56:59,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016891891891891 [2023-09-01 04:56:59,274 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 297 transitions. [2023-09-01 04:56:59,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 297 transitions. [2023-09-01 04:56:59,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:59,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 297 transitions. [2023-09-01 04:56:59,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:59,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:59,277 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:59,277 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 108 flow. Second operand 4 states and 297 transitions. [2023-09-01 04:56:59,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 54 transitions, 330 flow [2023-09-01 04:56:59,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:56:59,279 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 106 flow [2023-09-01 04:56:59,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-09-01 04:56:59,279 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-09-01 04:56:59,280 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 106 flow [2023-09-01 04:56:59,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:59,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:59,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:56:59,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 04:56:59,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:56:59,485 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:59,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:59,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1174384726, now seen corresponding path program 1 times [2023-09-01 04:56:59,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:59,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382120269] [2023-09-01 04:56:59,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:59,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:59,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:59,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:59,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382120269] [2023-09-01 04:56:59,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382120269] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:56:59,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819315912] [2023-09-01 04:56:59,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:59,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:56:59,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:56:59,533 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) [2023-09-01 04:56:59,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 04:56:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:59,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:56:59,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:56:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:59,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:56:59,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819315912] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:56:59,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:56:59,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 04:56:59,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143768685] [2023-09-01 04:56:59,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:56:59,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:56:59,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:59,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:56:59,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:56:59,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 148 [2023-09-01 04:56:59,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:59,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:59,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 148 [2023-09-01 04:56:59,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:59,674 INFO L130 PetriNetUnfolder]: 301/514 cut-off events. [2023-09-01 04:56:59,674 INFO L131 PetriNetUnfolder]: For 282/282 co-relation queries the response was YES. [2023-09-01 04:56:59,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1388 conditions, 514 events. 301/514 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2134 event pairs, 48 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 1374. Up to 380 conditions per place. [2023-09-01 04:56:59,676 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 32 selfloop transitions, 2 changer transitions 1/35 dead transitions. [2023-09-01 04:56:59,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 35 transitions, 206 flow [2023-09-01 04:56:59,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 04:56:59,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 04:56:59,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 288 transitions. [2023-09-01 04:56:59,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2023-09-01 04:56:59,678 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 288 transitions. [2023-09-01 04:56:59,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 288 transitions. [2023-09-01 04:56:59,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:59,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 288 transitions. [2023-09-01 04:56:59,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:59,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:59,680 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:59,680 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 106 flow. Second operand 4 states and 288 transitions. [2023-09-01 04:56:59,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 35 transitions, 206 flow [2023-09-01 04:56:59,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 35 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:56:59,681 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 87 flow [2023-09-01 04:56:59,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=87, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2023-09-01 04:56:59,682 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2023-09-01 04:56:59,682 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 87 flow [2023-09-01 04:56:59,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:59,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:59,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 04:56:59,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 04:56:59,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:56:59,887 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:59,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:59,888 INFO L85 PathProgramCache]: Analyzing trace with hash 869167325, now seen corresponding path program 1 times [2023-09-01 04:56:59,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:59,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201034958] [2023-09-01 04:56:59,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:59,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:59,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:59,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:59,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201034958] [2023-09-01 04:56:59,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201034958] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:56:59,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:56:59,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:56:59,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608919814] [2023-09-01 04:56:59,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:56:59,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:56:59,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:59,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:56:59,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:56:59,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 148 [2023-09-01 04:56:59,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:59,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:59,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 148 [2023-09-01 04:56:59,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:59,974 INFO L130 PetriNetUnfolder]: 259/454 cut-off events. [2023-09-01 04:56:59,974 INFO L131 PetriNetUnfolder]: For 232/232 co-relation queries the response was YES. [2023-09-01 04:56:59,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 454 events. 259/454 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1942 event pairs, 103 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 1276. Up to 239 conditions per place. [2023-09-01 04:56:59,976 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 31 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2023-09-01 04:56:59,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 35 transitions, 223 flow [2023-09-01 04:56:59,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:56:59,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:56:59,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-09-01 04:56:59,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2023-09-01 04:56:59,978 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-09-01 04:56:59,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-09-01 04:56:59,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:59,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-09-01 04:56:59,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:59,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:59,989 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:59,990 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 87 flow. Second operand 3 states and 224 transitions. [2023-09-01 04:56:59,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 35 transitions, 223 flow [2023-09-01 04:56:59,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 35 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:56:59,991 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 114 flow [2023-09-01 04:56:59,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2023-09-01 04:56:59,992 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2023-09-01 04:56:59,993 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 114 flow [2023-09-01 04:56:59,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:59,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:59,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 04:56:59,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 04:56:59,994 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:59,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:59,994 INFO L85 PathProgramCache]: Analyzing trace with hash 869167324, now seen corresponding path program 1 times [2023-09-01 04:56:59,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:59,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16700098] [2023-09-01 04:56:59,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:59,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:00,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:00,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16700098] [2023-09-01 04:57:00,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16700098] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:57:00,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:57:00,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:57:00,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622529706] [2023-09-01 04:57:00,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:57:00,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:57:00,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:00,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:57:00,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:57:00,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 148 [2023-09-01 04:57:00,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:00,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 148 [2023-09-01 04:57:00,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:00,078 INFO L130 PetriNetUnfolder]: 237/426 cut-off events. [2023-09-01 04:57:00,079 INFO L131 PetriNetUnfolder]: For 327/327 co-relation queries the response was YES. [2023-09-01 04:57:00,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 426 events. 237/426 cut-off events. For 327/327 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1842 event pairs, 75 based on Foata normal form. 24/450 useless extension candidates. Maximal degree in co-relation 1358. Up to 263 conditions per place. [2023-09-01 04:57:00,081 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 31 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2023-09-01 04:57:00,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 245 flow [2023-09-01 04:57:00,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:57:00,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:57:00,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2023-09-01 04:57:00,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022522522522522 [2023-09-01 04:57:00,082 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2023-09-01 04:57:00,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2023-09-01 04:57:00,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:00,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2023-09-01 04:57:00,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,084 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,085 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 114 flow. Second operand 3 states and 223 transitions. [2023-09-01 04:57:00,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 245 flow [2023-09-01 04:57:00,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 237 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:57:00,088 INFO L231 Difference]: Finished difference. Result has 34 places, 22 transitions, 122 flow [2023-09-01 04:57:00,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2023-09-01 04:57:00,089 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 9 predicate places. [2023-09-01 04:57:00,089 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 122 flow [2023-09-01 04:57:00,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:00,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:00,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 04:57:00,090 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:00,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:00,091 INFO L85 PathProgramCache]: Analyzing trace with hash 2077877637, now seen corresponding path program 1 times [2023-09-01 04:57:00,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:00,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641898249] [2023-09-01 04:57:00,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:00,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:00,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:00,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641898249] [2023-09-01 04:57:00,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641898249] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:57:00,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:57:00,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:57:00,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343043040] [2023-09-01 04:57:00,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:57:00,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:57:00,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:00,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:57:00,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 04:57:00,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:57:00,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:00,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:57:00,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:00,195 INFO L130 PetriNetUnfolder]: 289/502 cut-off events. [2023-09-01 04:57:00,195 INFO L131 PetriNetUnfolder]: For 538/538 co-relation queries the response was YES. [2023-09-01 04:57:00,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1650 conditions, 502 events. 289/502 cut-off events. For 538/538 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2096 event pairs, 65 based on Foata normal form. 24/526 useless extension candidates. Maximal degree in co-relation 1631. Up to 188 conditions per place. [2023-09-01 04:57:00,198 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 36 selfloop transitions, 11 changer transitions 0/47 dead transitions. [2023-09-01 04:57:00,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 331 flow [2023-09-01 04:57:00,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:57:00,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:57:00,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 356 transitions. [2023-09-01 04:57:00,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2023-09-01 04:57:00,199 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 356 transitions. [2023-09-01 04:57:00,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 356 transitions. [2023-09-01 04:57:00,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:00,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 356 transitions. [2023-09-01 04:57:00,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,202 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,202 INFO L175 Difference]: Start difference. First operand has 34 places, 22 transitions, 122 flow. Second operand 5 states and 356 transitions. [2023-09-01 04:57:00,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 331 flow [2023-09-01 04:57:00,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:57:00,204 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 219 flow [2023-09-01 04:57:00,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2023-09-01 04:57:00,204 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 16 predicate places. [2023-09-01 04:57:00,204 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 219 flow [2023-09-01 04:57:00,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:00,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:00,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 04:57:00,205 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:00,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:00,206 INFO L85 PathProgramCache]: Analyzing trace with hash 2077921346, now seen corresponding path program 1 times [2023-09-01 04:57:00,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:00,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23925641] [2023-09-01 04:57:00,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:00,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:00,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:00,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23925641] [2023-09-01 04:57:00,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23925641] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:57:00,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:57:00,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:57:00,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218207432] [2023-09-01 04:57:00,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:57:00,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:57:00,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:00,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:57:00,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 04:57:00,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:57:00,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:00,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:57:00,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:00,322 INFO L130 PetriNetUnfolder]: 301/532 cut-off events. [2023-09-01 04:57:00,322 INFO L131 PetriNetUnfolder]: For 1145/1145 co-relation queries the response was YES. [2023-09-01 04:57:00,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1990 conditions, 532 events. 301/532 cut-off events. For 1145/1145 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2318 event pairs, 61 based on Foata normal form. 48/580 useless extension candidates. Maximal degree in co-relation 1966. Up to 216 conditions per place. [2023-09-01 04:57:00,325 INFO L137 encePairwiseOnDemand]: 141/148 looper letters, 43 selfloop transitions, 9 changer transitions 0/52 dead transitions. [2023-09-01 04:57:00,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 438 flow [2023-09-01 04:57:00,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:57:00,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:57:00,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 358 transitions. [2023-09-01 04:57:00,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2023-09-01 04:57:00,327 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 358 transitions. [2023-09-01 04:57:00,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 358 transitions. [2023-09-01 04:57:00,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:00,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 358 transitions. [2023-09-01 04:57:00,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.6) internal successors, (358), 5 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,329 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,329 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 219 flow. Second operand 5 states and 358 transitions. [2023-09-01 04:57:00,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 438 flow [2023-09-01 04:57:00,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 411 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-09-01 04:57:00,332 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 281 flow [2023-09-01 04:57:00,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2023-09-01 04:57:00,334 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 20 predicate places. [2023-09-01 04:57:00,334 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 281 flow [2023-09-01 04:57:00,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:00,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:00,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 04:57:00,335 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:00,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:00,335 INFO L85 PathProgramCache]: Analyzing trace with hash 2077877425, now seen corresponding path program 1 times [2023-09-01 04:57:00,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:00,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933704627] [2023-09-01 04:57:00,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:00,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:00,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:00,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:00,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933704627] [2023-09-01 04:57:00,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933704627] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:57:00,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:57:00,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:57:00,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304043829] [2023-09-01 04:57:00,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:57:00,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:57:00,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:00,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:57:00,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 04:57:00,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:57:00,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:00,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:57:00,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:00,461 INFO L130 PetriNetUnfolder]: 353/608 cut-off events. [2023-09-01 04:57:00,461 INFO L131 PetriNetUnfolder]: For 1644/1644 co-relation queries the response was YES. [2023-09-01 04:57:00,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2427 conditions, 608 events. 353/608 cut-off events. For 1644/1644 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2647 event pairs, 63 based on Foata normal form. 24/632 useless extension candidates. Maximal degree in co-relation 2401. Up to 351 conditions per place. [2023-09-01 04:57:00,465 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 46 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2023-09-01 04:57:00,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 59 transitions, 536 flow [2023-09-01 04:57:00,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:57:00,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:57:00,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 360 transitions. [2023-09-01 04:57:00,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2023-09-01 04:57:00,466 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 360 transitions. [2023-09-01 04:57:00,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 360 transitions. [2023-09-01 04:57:00,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:00,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 360 transitions. [2023-09-01 04:57:00,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.0) internal successors, (360), 5 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,469 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,469 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 281 flow. Second operand 5 states and 360 transitions. [2023-09-01 04:57:00,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 59 transitions, 536 flow [2023-09-01 04:57:00,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 59 transitions, 532 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-09-01 04:57:00,472 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 387 flow [2023-09-01 04:57:00,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=387, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2023-09-01 04:57:00,473 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 28 predicate places. [2023-09-01 04:57:00,473 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 387 flow [2023-09-01 04:57:00,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:00,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:00,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 04:57:00,474 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:00,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:00,474 INFO L85 PathProgramCache]: Analyzing trace with hash 2077877424, now seen corresponding path program 1 times [2023-09-01 04:57:00,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:00,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754603885] [2023-09-01 04:57:00,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:00,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:00,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:00,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:00,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754603885] [2023-09-01 04:57:00,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754603885] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:57:00,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:57:00,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:57:00,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202271388] [2023-09-01 04:57:00,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:57:00,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:57:00,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:00,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:57:00,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 04:57:00,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:57:00,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 387 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:00,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:57:00,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:00,554 INFO L130 PetriNetUnfolder]: 252/432 cut-off events. [2023-09-01 04:57:00,554 INFO L131 PetriNetUnfolder]: For 1945/1945 co-relation queries the response was YES. [2023-09-01 04:57:00,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830 conditions, 432 events. 252/432 cut-off events. For 1945/1945 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1627 event pairs, 178 based on Foata normal form. 48/480 useless extension candidates. Maximal degree in co-relation 1798. Up to 432 conditions per place. [2023-09-01 04:57:00,556 INFO L137 encePairwiseOnDemand]: 145/148 looper letters, 27 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-09-01 04:57:00,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 28 transitions, 310 flow [2023-09-01 04:57:00,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:57:00,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:57:00,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 205 transitions. [2023-09-01 04:57:00,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2023-09-01 04:57:00,557 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 205 transitions. [2023-09-01 04:57:00,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 205 transitions. [2023-09-01 04:57:00,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:00,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 205 transitions. [2023-09-01 04:57:00,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,559 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,559 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 387 flow. Second operand 3 states and 205 transitions. [2023-09-01 04:57:00,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 28 transitions, 310 flow [2023-09-01 04:57:00,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 28 transitions, 263 flow, removed 13 selfloop flow, removed 7 redundant places. [2023-09-01 04:57:00,562 INFO L231 Difference]: Finished difference. Result has 45 places, 28 transitions, 209 flow [2023-09-01 04:57:00,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=45, PETRI_TRANSITIONS=28} [2023-09-01 04:57:00,563 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 20 predicate places. [2023-09-01 04:57:00,563 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 28 transitions, 209 flow [2023-09-01 04:57:00,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:00,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:00,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 04:57:00,564 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:00,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:00,564 INFO L85 PathProgramCache]: Analyzing trace with hash -8946286, now seen corresponding path program 1 times [2023-09-01 04:57:00,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:00,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495751125] [2023-09-01 04:57:00,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:00,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:00,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:00,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:00,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495751125] [2023-09-01 04:57:00,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495751125] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:57:00,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751303996] [2023-09-01 04:57:00,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:00,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:57:00,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:57:00,610 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) [2023-09-01 04:57:00,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 04:57:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:00,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:57:00,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:57:00,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:00,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:57:00,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:00,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751303996] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:57:00,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:57:00,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 04:57:00,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308514075] [2023-09-01 04:57:00,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:57:00,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 04:57:00,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:00,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 04:57:00,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-09-01 04:57:00,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:57:00,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 28 transitions, 209 flow. Second operand has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:00,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:57:00,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:00,848 INFO L130 PetriNetUnfolder]: 361/622 cut-off events. [2023-09-01 04:57:00,848 INFO L131 PetriNetUnfolder]: For 1617/1617 co-relation queries the response was YES. [2023-09-01 04:57:00,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2321 conditions, 622 events. 361/622 cut-off events. For 1617/1617 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2480 event pairs, 41 based on Foata normal form. 90/712 useless extension candidates. Maximal degree in co-relation 2298. Up to 203 conditions per place. [2023-09-01 04:57:00,851 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 44 selfloop transitions, 22 changer transitions 9/75 dead transitions. [2023-09-01 04:57:00,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 75 transitions, 621 flow [2023-09-01 04:57:00,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 04:57:00,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 04:57:00,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 630 transitions. [2023-09-01 04:57:00,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2023-09-01 04:57:00,853 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 630 transitions. [2023-09-01 04:57:00,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 630 transitions. [2023-09-01 04:57:00,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:00,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 630 transitions. [2023-09-01 04:57:00,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 148.0) internal successors, (1480), 10 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,857 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 148.0) internal successors, (1480), 10 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,857 INFO L175 Difference]: Start difference. First operand has 45 places, 28 transitions, 209 flow. Second operand 9 states and 630 transitions. [2023-09-01 04:57:00,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 75 transitions, 621 flow [2023-09-01 04:57:00,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 75 transitions, 618 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 04:57:00,860 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 474 flow [2023-09-01 04:57:00,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=474, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2023-09-01 04:57:00,862 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 34 predicate places. [2023-09-01 04:57:00,862 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 474 flow [2023-09-01 04:57:00,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:00,862 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:00,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 04:57:01,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:57:01,069 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:01,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:01,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1315827018, now seen corresponding path program 1 times [2023-09-01 04:57:01,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:01,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304102521] [2023-09-01 04:57:01,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:01,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:01,125 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:01,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:01,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304102521] [2023-09-01 04:57:01,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304102521] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:57:01,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122906900] [2023-09-01 04:57:01,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:01,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:57:01,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:57:01,128 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) [2023-09-01 04:57:01,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 04:57:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:01,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 04:57:01,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:57:01,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:01,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:57:01,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:01,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122906900] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:57:01,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:57:01,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-09-01 04:57:01,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040511587] [2023-09-01 04:57:01,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:57:01,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 04:57:01,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:01,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 04:57:01,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-09-01 04:57:01,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:57:01,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 474 flow. Second operand has 12 states, 12 states have (on average 64.83333333333333) internal successors, (778), 12 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:01,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:01,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:57:01,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:01,451 INFO L130 PetriNetUnfolder]: 481/826 cut-off events. [2023-09-01 04:57:01,452 INFO L131 PetriNetUnfolder]: For 4923/4923 co-relation queries the response was YES. [2023-09-01 04:57:01,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3859 conditions, 826 events. 481/826 cut-off events. For 4923/4923 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3313 event pairs, 33 based on Foata normal form. 86/912 useless extension candidates. Maximal degree in co-relation 3828. Up to 299 conditions per place. [2023-09-01 04:57:01,455 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 62 selfloop transitions, 37 changer transitions 18/117 dead transitions. [2023-09-01 04:57:01,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 117 transitions, 1182 flow [2023-09-01 04:57:01,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:57:01,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:57:01,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 975 transitions. [2023-09-01 04:57:01,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47055984555984554 [2023-09-01 04:57:01,463 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 975 transitions. [2023-09-01 04:57:01,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 975 transitions. [2023-09-01 04:57:01,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:01,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 975 transitions. [2023-09-01 04:57:01,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 69.64285714285714) internal successors, (975), 14 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) [2023-09-01 04:57:01,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 148.0) internal successors, (2220), 15 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:01,468 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 148.0) internal successors, (2220), 15 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:01,469 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 474 flow. Second operand 14 states and 975 transitions. [2023-09-01 04:57:01,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 117 transitions, 1182 flow [2023-09-01 04:57:01,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 117 transitions, 1080 flow, removed 46 selfloop flow, removed 3 redundant places. [2023-09-01 04:57:01,476 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 745 flow [2023-09-01 04:57:01,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=745, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2023-09-01 04:57:01,478 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 53 predicate places. [2023-09-01 04:57:01,478 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 745 flow [2023-09-01 04:57:01,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 64.83333333333333) internal successors, (778), 12 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:01,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:01,478 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:01,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 04:57:01,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:57:01,683 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:01,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:01,684 INFO L85 PathProgramCache]: Analyzing trace with hash -65917474, now seen corresponding path program 2 times [2023-09-01 04:57:01,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:01,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250295369] [2023-09-01 04:57:01,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:01,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:01,765 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:01,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:01,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250295369] [2023-09-01 04:57:01,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250295369] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:57:01,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739692879] [2023-09-01 04:57:01,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:57:01,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:57:01,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:57:01,786 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) [2023-09-01 04:57:01,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 04:57:01,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:57:01,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:57:01,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 04:57:01,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:57:01,872 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:01,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:57:01,922 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:01,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739692879] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:57:01,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:57:01,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-09-01 04:57:01,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240384549] [2023-09-01 04:57:01,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:57:01,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 04:57:01,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:01,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 04:57:01,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-09-01 04:57:01,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:57:01,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 745 flow. Second operand has 16 states, 16 states have (on average 64.625) internal successors, (1034), 16 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:01,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:01,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:57:01,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:02,263 INFO L130 PetriNetUnfolder]: 761/1306 cut-off events. [2023-09-01 04:57:02,263 INFO L131 PetriNetUnfolder]: For 10066/10066 co-relation queries the response was YES. [2023-09-01 04:57:02,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6456 conditions, 1306 events. 761/1306 cut-off events. For 10066/10066 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5609 event pairs, 57 based on Foata normal form. 68/1374 useless extension candidates. Maximal degree in co-relation 6416. Up to 499 conditions per place. [2023-09-01 04:57:02,269 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 74 selfloop transitions, 67 changer transitions 30/171 dead transitions. [2023-09-01 04:57:02,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 171 transitions, 1967 flow [2023-09-01 04:57:02,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 04:57:02,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 04:57:02,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1315 transitions. [2023-09-01 04:57:02,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46763869132290187 [2023-09-01 04:57:02,272 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1315 transitions. [2023-09-01 04:57:02,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1315 transitions. [2023-09-01 04:57:02,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:02,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1315 transitions. [2023-09-01 04:57:02,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 148.0) internal successors, (2960), 20 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,281 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 148.0) internal successors, (2960), 20 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,281 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 745 flow. Second operand 19 states and 1315 transitions. [2023-09-01 04:57:02,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 171 transitions, 1967 flow [2023-09-01 04:57:02,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 171 transitions, 1908 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-09-01 04:57:02,301 INFO L231 Difference]: Finished difference. Result has 103 places, 105 transitions, 1417 flow [2023-09-01 04:57:02,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1417, PETRI_PLACES=103, PETRI_TRANSITIONS=105} [2023-09-01 04:57:02,302 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 78 predicate places. [2023-09-01 04:57:02,302 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 105 transitions, 1417 flow [2023-09-01 04:57:02,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 64.625) internal successors, (1034), 16 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:02,302 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:02,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 04:57:02,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-09-01 04:57:02,514 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:02,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:02,515 INFO L85 PathProgramCache]: Analyzing trace with hash 770837146, now seen corresponding path program 2 times [2023-09-01 04:57:02,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:02,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955766202] [2023-09-01 04:57:02,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:02,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:02,646 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:02,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:02,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955766202] [2023-09-01 04:57:02,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955766202] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:57:02,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939501036] [2023-09-01 04:57:02,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:57:02,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:57:02,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:57:02,647 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:57:02,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 04:57:02,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:57:02,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:57:02,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 04:57:02,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:57:02,778 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:02,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:57:02,910 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:02,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939501036] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:57:02,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:57:02,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2023-09-01 04:57:02,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187536273] [2023-09-01 04:57:02,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:57:02,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-09-01 04:57:02,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:02,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-09-01 04:57:02,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2023-09-01 04:57:02,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:57:02,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 105 transitions, 1417 flow. Second operand has 28 states, 28 states have (on average 64.35714285714286) internal successors, (1802), 28 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:02,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:57:02,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:03,615 INFO L130 PetriNetUnfolder]: 1429/2466 cut-off events. [2023-09-01 04:57:03,615 INFO L131 PetriNetUnfolder]: For 31262/31262 co-relation queries the response was YES. [2023-09-01 04:57:03,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13157 conditions, 2466 events. 1429/2466 cut-off events. For 31262/31262 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11246 event pairs, 67 based on Foata normal form. 156/2622 useless extension candidates. Maximal degree in co-relation 13106. Up to 991 conditions per place. [2023-09-01 04:57:03,627 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 132 selfloop transitions, 131 changer transitions 58/321 dead transitions. [2023-09-01 04:57:03,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 321 transitions, 4021 flow [2023-09-01 04:57:03,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-09-01 04:57:03,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-09-01 04:57:03,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2356 transitions. [2023-09-01 04:57:03,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4682034976152623 [2023-09-01 04:57:03,632 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2356 transitions. [2023-09-01 04:57:03,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2356 transitions. [2023-09-01 04:57:03,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:03,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2356 transitions. [2023-09-01 04:57:03,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 69.29411764705883) internal successors, (2356), 34 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:03,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 148.0) internal successors, (5180), 35 states have internal predecessors, (5180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:03,643 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 148.0) internal successors, (5180), 35 states have internal predecessors, (5180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:03,643 INFO L175 Difference]: Start difference. First operand has 103 places, 105 transitions, 1417 flow. Second operand 34 states and 2356 transitions. [2023-09-01 04:57:03,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 321 transitions, 4021 flow [2023-09-01 04:57:03,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 321 transitions, 3946 flow, removed 32 selfloop flow, removed 3 redundant places. [2023-09-01 04:57:03,715 INFO L231 Difference]: Finished difference. Result has 154 places, 189 transitions, 3061 flow [2023-09-01 04:57:03,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=1376, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3061, PETRI_PLACES=154, PETRI_TRANSITIONS=189} [2023-09-01 04:57:03,715 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 129 predicate places. [2023-09-01 04:57:03,715 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 189 transitions, 3061 flow [2023-09-01 04:57:03,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 64.35714285714286) internal successors, (1802), 28 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:03,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:03,716 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:03,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 04:57:03,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 04:57:03,917 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:03,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:03,917 INFO L85 PathProgramCache]: Analyzing trace with hash -830391018, now seen corresponding path program 3 times [2023-09-01 04:57:03,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:03,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081801971] [2023-09-01 04:57:03,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:03,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:04,248 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:04,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:04,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081801971] [2023-09-01 04:57:04,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081801971] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:57:04,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713963053] [2023-09-01 04:57:04,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 04:57:04,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:57:04,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:57:04,250 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:57:04,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 04:57:04,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-09-01 04:57:04,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:57:04,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 24 conjunts are in the unsatisfiable core [2023-09-01 04:57:04,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:57:04,412 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:04,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:57:04,798 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:04,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713963053] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:57:04,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:57:04,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2023-09-01 04:57:04,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284348933] [2023-09-01 04:57:04,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:57:04,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-09-01 04:57:04,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:04,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-09-01 04:57:04,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1656, Unknown=0, NotChecked=0, Total=2256 [2023-09-01 04:57:04,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:57:04,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 189 transitions, 3061 flow. Second operand has 48 states, 48 states have (on average 64.20833333333333) internal successors, (3082), 48 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:04,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:04,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:57:04,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:06,808 INFO L130 PetriNetUnfolder]: 2885/5042 cut-off events. [2023-09-01 04:57:06,808 INFO L131 PetriNetUnfolder]: For 113189/113189 co-relation queries the response was YES. [2023-09-01 04:57:06,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28571 conditions, 5042 events. 2885/5042 cut-off events. For 113189/113189 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 24871 event pairs, 121 based on Foata normal form. 292/5334 useless extension candidates. Maximal degree in co-relation 28498. Up to 2111 conditions per place. [2023-09-01 04:57:06,839 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 206 selfloop transitions, 291 changer transitions 110/607 dead transitions. [2023-09-01 04:57:06,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 607 transitions, 8900 flow [2023-09-01 04:57:06,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-09-01 04:57:06,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2023-09-01 04:57:06,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 4083 transitions. [2023-09-01 04:57:06,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46759047182776 [2023-09-01 04:57:06,844 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 4083 transitions. [2023-09-01 04:57:06,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 4083 transitions. [2023-09-01 04:57:06,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:06,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 4083 transitions. [2023-09-01 04:57:06,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 69.20338983050847) internal successors, (4083), 59 states have internal predecessors, (4083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:06,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 148.0) internal successors, (8880), 60 states have internal predecessors, (8880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:06,858 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 148.0) internal successors, (8880), 60 states have internal predecessors, (8880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:06,858 INFO L175 Difference]: Start difference. First operand has 154 places, 189 transitions, 3061 flow. Second operand 59 states and 4083 transitions. [2023-09-01 04:57:06,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 607 transitions, 8900 flow [2023-09-01 04:57:07,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 607 transitions, 8808 flow, removed 32 selfloop flow, removed 7 redundant places. [2023-09-01 04:57:07,118 INFO L231 Difference]: Finished difference. Result has 240 places, 376 transitions, 7144 flow [2023-09-01 04:57:07,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=2997, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=7144, PETRI_PLACES=240, PETRI_TRANSITIONS=376} [2023-09-01 04:57:07,118 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 215 predicate places. [2023-09-01 04:57:07,118 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 376 transitions, 7144 flow [2023-09-01 04:57:07,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 64.20833333333333) internal successors, (3082), 48 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:07,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:07,120 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:07,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-09-01 04:57:07,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:57:07,324 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:07,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:07,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1775272490, now seen corresponding path program 3 times [2023-09-01 04:57:07,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:07,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775653319] [2023-09-01 04:57:07,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:07,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:08,266 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:08,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:08,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775653319] [2023-09-01 04:57:08,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775653319] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:57:08,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502390243] [2023-09-01 04:57:08,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 04:57:08,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:57:08,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:57:08,268 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:57:08,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 04:57:08,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2023-09-01 04:57:08,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:57:08,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 04:57:08,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:57:08,910 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:08,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:57:08,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502390243] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:57:08,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:57:08,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [45] total 69 [2023-09-01 04:57:08,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410326426] [2023-09-01 04:57:08,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:57:08,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 04:57:08,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:08,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 04:57:08,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=850, Invalid=3842, Unknown=0, NotChecked=0, Total=4692 [2023-09-01 04:57:08,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:57:08,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 376 transitions, 7144 flow. Second operand has 24 states, 24 states have (on average 65.125) internal successors, (1563), 24 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:08,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:08,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:57:08,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:14,908 INFO L130 PetriNetUnfolder]: 22903/33946 cut-off events. [2023-09-01 04:57:14,908 INFO L131 PetriNetUnfolder]: For 243143/243143 co-relation queries the response was YES. [2023-09-01 04:57:15,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202247 conditions, 33946 events. 22903/33946 cut-off events. For 243143/243143 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 198393 event pairs, 473 based on Foata normal form. 950/34896 useless extension candidates. Maximal degree in co-relation 202149. Up to 19193 conditions per place. [2023-09-01 04:57:15,180 INFO L137 encePairwiseOnDemand]: 145/148 looper letters, 0 selfloop transitions, 0 changer transitions 3970/3970 dead transitions. [2023-09-01 04:57:15,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 3970 transitions, 77853 flow [2023-09-01 04:57:15,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-09-01 04:57:15,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-09-01 04:57:15,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1647 transitions. [2023-09-01 04:57:15,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48384253819036427 [2023-09-01 04:57:15,183 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1647 transitions. [2023-09-01 04:57:15,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1647 transitions. [2023-09-01 04:57:15,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:15,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1647 transitions. [2023-09-01 04:57:15,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 71.6086956521739) internal successors, (1647), 23 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:15,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 148.0) internal successors, (3552), 24 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:15,189 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 148.0) internal successors, (3552), 24 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:15,189 INFO L175 Difference]: Start difference. First operand has 240 places, 376 transitions, 7144 flow. Second operand 23 states and 1647 transitions. [2023-09-01 04:57:15,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 3970 transitions, 77853 flow [2023-09-01 04:57:18,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 3970 transitions, 64357 flow, removed 396 selfloop flow, removed 77 redundant places. [2023-09-01 04:57:18,516 INFO L231 Difference]: Finished difference. Result has 177 places, 0 transitions, 0 flow [2023-09-01 04:57:18,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=5077, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=177, PETRI_TRANSITIONS=0} [2023-09-01 04:57:18,517 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 152 predicate places. [2023-09-01 04:57:18,517 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 0 transitions, 0 flow [2023-09-01 04:57:18,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 65.125) internal successors, (1563), 24 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:18,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-09-01 04:57:18,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2023-09-01 04:57:18,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-09-01 04:57:18,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-09-01 04:57:18,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-09-01 04:57:18,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-09-01 04:57:18,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-09-01 04:57:18,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-09-01 04:57:18,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-09-01 04:57:18,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-09-01 04:57:18,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-09-01 04:57:18,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-09-01 04:57:18,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-09-01 04:57:18,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-09-01 04:57:18,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-09-01 04:57:18,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-09-01 04:57:18,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-09-01 04:57:18,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-09-01 04:57:18,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-09-01 04:57:18,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-09-01 04:57:18,728 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:18,732 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 04:57:18,732 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 04:57:18,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 04:57:18 BasicIcfg [2023-09-01 04:57:18,734 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 04:57:18,735 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 04:57:18,735 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 04:57:18,735 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 04:57:18,735 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:56:56" (3/4) ... [2023-09-01 04:57:18,737 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 04:57:18,740 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-09-01 04:57:18,740 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-09-01 04:57:18,742 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-09-01 04:57:18,742 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-09-01 04:57:18,742 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 04:57:18,742 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 04:57:18,762 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 04:57:18,762 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 04:57:18,763 INFO L158 Benchmark]: Toolchain (without parser) took 23143.88ms. Allocated memory was 90.2MB in the beginning and 6.3GB in the end (delta: 6.2GB). Free memory was 67.5MB in the beginning and 5.6GB in the end (delta: -5.5GB). Peak memory consumption was 715.4MB. Max. memory is 16.1GB. [2023-09-01 04:57:18,763 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 67.1MB. Free memory was 45.5MB in the beginning and 45.4MB in the end (delta: 98.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 04:57:18,763 INFO L158 Benchmark]: CACSL2BoogieTranslator took 377.18ms. Allocated memory is still 90.2MB. Free memory was 67.3MB in the beginning and 48.0MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-09-01 04:57:18,764 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.14ms. Allocated memory is still 90.2MB. Free memory was 48.0MB in the beginning and 69.6MB in the end (delta: -21.6MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2023-09-01 04:57:18,764 INFO L158 Benchmark]: Boogie Preprocessor took 34.08ms. Allocated memory is still 90.2MB. Free memory was 69.6MB in the beginning and 68.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 04:57:18,764 INFO L158 Benchmark]: RCFGBuilder took 340.78ms. Allocated memory is still 90.2MB. Free memory was 68.2MB in the beginning and 54.3MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-09-01 04:57:18,764 INFO L158 Benchmark]: TraceAbstraction took 22326.74ms. Allocated memory was 90.2MB in the beginning and 6.3GB in the end (delta: 6.2GB). Free memory was 53.6MB in the beginning and 5.6GB in the end (delta: -5.5GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-09-01 04:57:18,764 INFO L158 Benchmark]: Witness Printer took 27.68ms. Allocated memory is still 6.3GB. Free memory was 5.6GB in the beginning and 5.6GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 04:57:18,767 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 67.1MB. Free memory was 45.5MB in the beginning and 45.4MB in the end (delta: 98.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 377.18ms. Allocated memory is still 90.2MB. Free memory was 67.3MB in the beginning and 48.0MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.14ms. Allocated memory is still 90.2MB. Free memory was 48.0MB in the beginning and 69.6MB in the end (delta: -21.6MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.08ms. Allocated memory is still 90.2MB. Free memory was 69.6MB in the beginning and 68.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 340.78ms. Allocated memory is still 90.2MB. Free memory was 68.2MB in the beginning and 54.3MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 22326.74ms. Allocated memory was 90.2MB in the beginning and 6.3GB in the end (delta: 6.2GB). Free memory was 53.6MB in the beginning and 5.6GB in the end (delta: -5.5GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 27.68ms. Allocated memory is still 6.3GB. Free memory was 5.6GB in the beginning and 5.6GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 77 PlacesBefore, 25 PlacesAfterwards, 75 TransitionsBefore, 21 TransitionsAfterwards, 1802 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 1843 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1524, independent: 1502, independent conditional: 0, independent unconditional: 1502, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 981, independent: 970, independent conditional: 0, independent unconditional: 970, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1524, independent: 532, independent conditional: 0, independent unconditional: 532, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 981, unknown conditional: 0, unknown unconditional: 981] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 107 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 22.2s, OverallIterations: 17, TraceHistogramMax: 22, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 14.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2844 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2751 mSDsluCounter, 204 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 174 mSDsCounter, 202 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2280 IncrementalHoareTripleChecker+Invalid, 2482 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 202 mSolverCounterUnsat, 30 mSDtfsCounter, 2280 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 447 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4808 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7144occurred in iteration=16, InterpolantAutomatonStates: 199, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 344 NumberOfCodeBlocks, 344 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 395 ConstructedInterpolants, 0 QuantifiedInterpolants, 1149 SizeOfPredicates, 46 NumberOfNonLiveVariables, 1572 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 30 InterpolantComputations, 12 PerfectInterpolantSequences, 486/1485 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 04:57:18,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE