./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 422a1b4addf42b15afc18c6b3ff87ab94cf45a5af46627fa0165a3dbe9c138e8 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:44:05,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:44:05,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:44:05,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:44:05,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:44:05,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:44:05,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:44:05,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:44:05,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:44:05,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:44:05,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:44:05,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:44:05,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:44:05,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:44:05,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:44:05,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:44:05,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:44:05,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:44:05,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:44:05,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:44:05,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:44:05,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:44:05,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:44:05,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:44:05,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:44:05,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:44:05,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:44:05,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:44:05,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:44:05,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:44:05,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:44:05,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:44:05,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:44:05,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:44:05,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:44:05,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:44:05,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:44:05,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:44:05,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:44:05,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:44:05,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:44:05,147 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:44:05,177 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:44:05,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:44:05,179 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:44:05,179 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:44:05,180 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:44:05,180 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:44:05,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:44:05,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:44:05,181 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:44:05,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:44:05,182 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:44:05,182 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:44:05,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:44:05,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:44:05,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:44:05,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:44:05,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:44:05,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:44:05,183 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:44:05,183 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:44:05,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:44:05,184 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:44:05,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:44:05,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:44:05,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:44:05,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:44:05,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:44:05,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:44:05,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:44:05,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:44:05,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:44:05,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:44:05,186 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:44:05,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:44:05,186 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:44:05,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:44:05,187 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:44:05,187 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 422a1b4addf42b15afc18c6b3ff87ab94cf45a5af46627fa0165a3dbe9c138e8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:44:05,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:44:05,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:44:05,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:44:05,527 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:44:05,527 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:44:05,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2023-08-30 11:44:06,649 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:44:06,863 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:44:06,864 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2023-08-30 11:44:06,870 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6ae6bccf/40197add44d04fe8b0bdfea14c96f191/FLAGbe5e73ebe [2023-08-30 11:44:06,881 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6ae6bccf/40197add44d04fe8b0bdfea14c96f191 [2023-08-30 11:44:06,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:44:06,884 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:44:06,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:44:06,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:44:06,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:44:06,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:44:06" (1/1) ... [2023-08-30 11:44:06,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71d36a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:06, skipping insertion in model container [2023-08-30 11:44:06,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:44:06" (1/1) ... [2023-08-30 11:44:06,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:44:06,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:44:07,102 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2023-08-30 11:44:07,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:44:07,132 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:44:07,173 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2023-08-30 11:44:07,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:44:07,210 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:44:07,211 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:44:07,217 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:44:07,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:07 WrapperNode [2023-08-30 11:44:07,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:44:07,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:44:07,220 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:44:07,220 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:44:07,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:07" (1/1) ... [2023-08-30 11:44:07,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:07" (1/1) ... [2023-08-30 11:44:07,290 INFO L138 Inliner]: procedures = 27, calls = 80, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 361 [2023-08-30 11:44:07,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:44:07,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:44:07,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:44:07,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:44:07,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:07" (1/1) ... [2023-08-30 11:44:07,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:07" (1/1) ... [2023-08-30 11:44:07,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:07" (1/1) ... [2023-08-30 11:44:07,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:07" (1/1) ... [2023-08-30 11:44:07,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:07" (1/1) ... [2023-08-30 11:44:07,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:07" (1/1) ... [2023-08-30 11:44:07,349 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:07" (1/1) ... [2023-08-30 11:44:07,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:07" (1/1) ... [2023-08-30 11:44:07,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:44:07,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:44:07,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:44:07,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:44:07,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:07" (1/1) ... [2023-08-30 11:44:07,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:44:07,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:44:07,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 11:44:07,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 11:44:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:44:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:44:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:44:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:44:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:44:07,439 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:44:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:44:07,439 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:44:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:44:07,440 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:44:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 11:44:07,440 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 11:44:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:44:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:44:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:44:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:44:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:44:07,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:44:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:44:07,443 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 11:44:07,610 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:44:07,612 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:44:08,119 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:44:08,548 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:44:08,548 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 11:44:08,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:44:08 BoogieIcfgContainer [2023-08-30 11:44:08,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:44:08,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:44:08,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:44:08,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:44:08,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:44:06" (1/3) ... [2023-08-30 11:44:08,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231e13f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:44:08, skipping insertion in model container [2023-08-30 11:44:08,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:44:07" (2/3) ... [2023-08-30 11:44:08,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231e13f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:44:08, skipping insertion in model container [2023-08-30 11:44:08,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:44:08" (3/3) ... [2023-08-30 11:44:08,561 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2023-08-30 11:44:08,568 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:44:08,576 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:44:08,576 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-08-30 11:44:08,576 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:44:08,793 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 11:44:08,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 254 transitions, 540 flow [2023-08-30 11:44:08,965 INFO L130 PetriNetUnfolder]: 18/250 cut-off events. [2023-08-30 11:44:08,965 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 11:44:08,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 250 events. 18/250 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 293 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 207. Up to 2 conditions per place. [2023-08-30 11:44:08,973 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 254 transitions, 540 flow [2023-08-30 11:44:08,983 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 230 transitions, 481 flow [2023-08-30 11:44:08,987 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:44:09,003 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 226 places, 230 transitions, 481 flow [2023-08-30 11:44:09,007 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 226 places, 230 transitions, 481 flow [2023-08-30 11:44:09,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 230 transitions, 481 flow [2023-08-30 11:44:09,073 INFO L130 PetriNetUnfolder]: 17/230 cut-off events. [2023-08-30 11:44:09,074 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:44:09,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 230 events. 17/230 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 290 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 207. Up to 2 conditions per place. [2023-08-30 11:44:09,079 INFO L119 LiptonReduction]: Number of co-enabled transitions 4644 [2023-08-30 11:44:25,471 INFO L134 LiptonReduction]: Checked pairs total: 9412 [2023-08-30 11:44:25,471 INFO L136 LiptonReduction]: Total number of compositions: 231 [2023-08-30 11:44:25,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:44:25,488 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;@78b6720d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:44:25,488 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-08-30 11:44:25,491 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:44:25,491 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:44:25,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:44:25,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:44:25,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:44:25,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:44:25,497 INFO L85 PathProgramCache]: Analyzing trace with hash 42807, now seen corresponding path program 1 times [2023-08-30 11:44:25,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:44:25,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021552463] [2023-08-30 11:44:25,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:25,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:44:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:25,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:25,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:44:25,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021552463] [2023-08-30 11:44:25,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021552463] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:44:25,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:44:25,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:44:25,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30986438] [2023-08-30 11:44:25,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:44:25,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:44:25,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:44:25,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:44:25,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:44:25,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 485 [2023-08-30 11:44:25,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:25,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:44:25,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 485 [2023-08-30 11:44:25,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:44:38,062 INFO L130 PetriNetUnfolder]: 90903/113049 cut-off events. [2023-08-30 11:44:38,062 INFO L131 PetriNetUnfolder]: For 1312/1312 co-relation queries the response was YES. [2023-08-30 11:44:38,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227446 conditions, 113049 events. 90903/113049 cut-off events. For 1312/1312 co-relation queries the response was YES. Maximal size of possible extension queue 9860. Compared 669310 event pairs, 60600 based on Foata normal form. 0/34841 useless extension candidates. Maximal degree in co-relation 102115. Up to 55401 conditions per place. [2023-08-30 11:44:38,821 INFO L137 encePairwiseOnDemand]: 469/485 looper letters, 93 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2023-08-30 11:44:38,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 103 transitions, 442 flow [2023-08-30 11:44:38,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:44:38,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:44:38,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 702 transitions. [2023-08-30 11:44:38,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824742268041237 [2023-08-30 11:44:38,841 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 702 transitions. [2023-08-30 11:44:38,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 702 transitions. [2023-08-30 11:44:38,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:44:38,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 702 transitions. [2023-08-30 11:44:38,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:38,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:38,859 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:38,861 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 151 flow. Second operand 3 states and 702 transitions. [2023-08-30 11:44:38,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 103 transitions, 442 flow [2023-08-30 11:44:39,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 103 transitions, 416 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 11:44:39,723 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 158 flow [2023-08-30 11:44:39,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=485, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2023-08-30 11:44:39,728 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2023-08-30 11:44:39,729 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 158 flow [2023-08-30 11:44:39,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:39,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:44:39,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:44:39,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:44:39,732 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:44:39,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:44:39,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1329307, now seen corresponding path program 1 times [2023-08-30 11:44:39,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:44:39,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33924113] [2023-08-30 11:44:39,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:39,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:44:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:39,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:39,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:44:39,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33924113] [2023-08-30 11:44:39,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33924113] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:44:39,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499244153] [2023-08-30 11:44:39,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:39,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:44:39,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:44:39,873 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:44:39,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 11:44:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:40,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:44:40,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:44:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:40,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:44:40,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:40,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499244153] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:44:40,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:44:40,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:44:40,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662591152] [2023-08-30 11:44:40,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:44:40,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:44:40,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:44:40,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:44:40,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:44:40,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 485 [2023-08-30 11:44:40,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 196.14285714285714) internal successors, (1373), 7 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:40,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:44:40,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 485 [2023-08-30 11:44:40,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:45:04,997 INFO L130 PetriNetUnfolder]: 227262/282621 cut-off events. [2023-08-30 11:45:04,997 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:45:05,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565039 conditions, 282621 events. 227262/282621 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18180. Compared 1789149 event pairs, 151500 based on Foata normal form. 0/87207 useless extension candidates. Maximal degree in co-relation 451987. Up to 55399 conditions per place. [2023-08-30 11:45:06,611 INFO L137 encePairwiseOnDemand]: 477/485 looper letters, 220 selfloop transitions, 21 changer transitions 0/247 dead transitions. [2023-08-30 11:45:06,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 247 transitions, 1082 flow [2023-08-30 11:45:06,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:45:06,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:45:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1612 transitions. [2023-08-30 11:45:06,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748159057437408 [2023-08-30 11:45:06,618 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1612 transitions. [2023-08-30 11:45:06,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1612 transitions. [2023-08-30 11:45:06,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:45:06,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1612 transitions. [2023-08-30 11:45:06,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 230.28571428571428) internal successors, (1612), 7 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:06,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 485.0) internal successors, (3880), 8 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:06,631 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 485.0) internal successors, (3880), 8 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:06,632 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 158 flow. Second operand 7 states and 1612 transitions. [2023-08-30 11:45:06,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 247 transitions, 1082 flow [2023-08-30 11:45:06,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 247 transitions, 1068 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:45:06,639 INFO L231 Difference]: Finished difference. Result has 68 places, 75 transitions, 289 flow [2023-08-30 11:45:06,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=485, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=289, PETRI_PLACES=68, PETRI_TRANSITIONS=75} [2023-08-30 11:45:06,641 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -4 predicate places. [2023-08-30 11:45:06,641 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 75 transitions, 289 flow [2023-08-30 11:45:06,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 196.14285714285714) internal successors, (1373), 7 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:06,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:45:06,643 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 11:45:06,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 11:45:06,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:45:06,850 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:45:06,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:45:06,850 INFO L85 PathProgramCache]: Analyzing trace with hash 41210808, now seen corresponding path program 1 times [2023-08-30 11:45:06,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:45:06,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951270257] [2023-08-30 11:45:06,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:45:06,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:45:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:45:07,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:45:07,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:45:07,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951270257] [2023-08-30 11:45:07,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951270257] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:45:07,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:45:07,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:45:07,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768149234] [2023-08-30 11:45:07,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:45:07,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:45:07,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:45:07,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:45:07,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:45:07,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 485 [2023-08-30 11:45:07,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 75 transitions, 289 flow. Second operand has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:07,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:45:07,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 485 [2023-08-30 11:45:07,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:45:31,632 INFO L130 PetriNetUnfolder]: 227256/282613 cut-off events. [2023-08-30 11:45:31,632 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:45:32,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565041 conditions, 282613 events. 227256/282613 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19738. Compared 1799961 event pairs, 151500 based on Foata normal form. 2/86953 useless extension candidates. Maximal degree in co-relation 339005. Up to 276978 conditions per place. [2023-08-30 11:45:33,130 INFO L137 encePairwiseOnDemand]: 482/485 looper letters, 60 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-08-30 11:45:33,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 67 transitions, 357 flow [2023-08-30 11:45:33,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:45:33,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:45:33,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 636 transitions. [2023-08-30 11:45:33,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43711340206185567 [2023-08-30 11:45:33,133 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 636 transitions. [2023-08-30 11:45:33,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 636 transitions. [2023-08-30 11:45:33,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:45:33,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 636 transitions. [2023-08-30 11:45:33,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:33,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:33,139 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:33,140 INFO L175 Difference]: Start difference. First operand has 68 places, 75 transitions, 289 flow. Second operand 3 states and 636 transitions. [2023-08-30 11:45:33,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 67 transitions, 357 flow [2023-08-30 11:45:33,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 67 transitions, 338 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 11:45:33,145 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 218 flow [2023-08-30 11:45:33,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=485, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2023-08-30 11:45:33,147 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2023-08-30 11:45:33,147 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 218 flow [2023-08-30 11:45:33,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:33,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:45:33,148 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:45:33,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 11:45:33,149 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:45:33,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:45:33,149 INFO L85 PathProgramCache]: Analyzing trace with hash 948953143, now seen corresponding path program 2 times [2023-08-30 11:45:33,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:45:33,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348411293] [2023-08-30 11:45:33,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:45:33,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:45:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:45:33,240 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:45:33,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:45:33,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348411293] [2023-08-30 11:45:33,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348411293] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:45:33,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844659613] [2023-08-30 11:45:33,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:45:33,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:45:33,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:45:33,245 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:45:33,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 11:45:33,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:45:33,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:45:33,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:45:33,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:45:33,412 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:45:33,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:45:33,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844659613] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:45:33,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:45:33,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:45:33,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179680953] [2023-08-30 11:45:33,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:45:33,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:45:33,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:45:33,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:45:33,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:45:33,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 485 [2023-08-30 11:45:33,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:33,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:45:33,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 485 [2023-08-30 11:45:33,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:45:57,124 INFO L130 PetriNetUnfolder]: 227256/282612 cut-off events. [2023-08-30 11:45:57,124 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 11:45:57,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565026 conditions, 282612 events. 227256/282612 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19738. Compared 1799997 event pairs, 151500 based on Foata normal form. 1/86952 useless extension candidates. Maximal degree in co-relation 565014. Up to 276972 conditions per place. [2023-08-30 11:45:58,619 INFO L137 encePairwiseOnDemand]: 482/485 looper letters, 54 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2023-08-30 11:45:58,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 66 transitions, 328 flow [2023-08-30 11:45:58,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:45:58,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:45:58,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 640 transitions. [2023-08-30 11:45:58,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43986254295532645 [2023-08-30 11:45:58,622 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 640 transitions. [2023-08-30 11:45:58,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 640 transitions. [2023-08-30 11:45:58,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:45:58,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 640 transitions. [2023-08-30 11:45:58,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:58,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:58,628 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:58,628 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 218 flow. Second operand 3 states and 640 transitions. [2023-08-30 11:45:58,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 66 transitions, 328 flow [2023-08-30 11:45:58,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 66 transitions, 327 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:45:58,631 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 219 flow [2023-08-30 11:45:58,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=485, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2023-08-30 11:45:58,632 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2023-08-30 11:45:58,632 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 219 flow [2023-08-30 11:45:58,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:58,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:45:58,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:45:58,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 11:45:58,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 11:45:58,839 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:45:58,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:45:58,840 INFO L85 PathProgramCache]: Analyzing trace with hash 951523232, now seen corresponding path program 1 times [2023-08-30 11:45:58,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:45:58,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884811170] [2023-08-30 11:45:58,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:45:58,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:45:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:45:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:45:59,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:45:59,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884811170] [2023-08-30 11:45:59,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884811170] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:45:59,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:45:59,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:45:59,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461715798] [2023-08-30 11:45:59,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:45:59,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:45:59,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:45:59,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:45:59,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:45:59,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 485 [2023-08-30 11:45:59,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:59,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:45:59,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 485 [2023-08-30 11:45:59,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:46:25,170 INFO L130 PetriNetUnfolder]: 242156/302908 cut-off events. [2023-08-30 11:46:25,170 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-30 11:46:25,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605648 conditions, 302908 events. 242156/302908 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 21204. Compared 1973795 event pairs, 162500 based on Foata normal form. 0/97638 useless extension candidates. Maximal degree in co-relation 605635. Up to 276976 conditions per place. [2023-08-30 11:46:26,852 INFO L137 encePairwiseOnDemand]: 472/485 looper letters, 95 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2023-08-30 11:46:26,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 104 transitions, 526 flow [2023-08-30 11:46:26,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:46:26,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:46:26,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 858 transitions. [2023-08-30 11:46:26,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4422680412371134 [2023-08-30 11:46:26,855 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 858 transitions. [2023-08-30 11:46:26,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 858 transitions. [2023-08-30 11:46:26,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:46:26,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 858 transitions. [2023-08-30 11:46:26,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 214.5) internal successors, (858), 4 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:26,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 485.0) internal successors, (2425), 5 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:26,861 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 485.0) internal successors, (2425), 5 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:26,862 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 219 flow. Second operand 4 states and 858 transitions. [2023-08-30 11:46:26,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 104 transitions, 526 flow [2023-08-30 11:46:26,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 104 transitions, 514 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:46:26,864 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 234 flow [2023-08-30 11:46:26,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=485, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2023-08-30 11:46:26,865 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -4 predicate places. [2023-08-30 11:46:26,865 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 234 flow [2023-08-30 11:46:26,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:26,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:46:26,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:46:26,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:46:26,867 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:46:26,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:46:26,867 INFO L85 PathProgramCache]: Analyzing trace with hash -644651260, now seen corresponding path program 1 times [2023-08-30 11:46:26,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:46:26,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133392263] [2023-08-30 11:46:26,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:46:26,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:46:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:46:27,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:46:27,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:46:27,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133392263] [2023-08-30 11:46:27,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133392263] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:46:27,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720324210] [2023-08-30 11:46:27,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:46:27,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:46:27,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:46:27,022 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:46:27,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 11:46:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:46:27,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:46:27,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:46:27,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:46:27,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:46:27,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720324210] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:46:27,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:46:27,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 11:46:27,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741866397] [2023-08-30 11:46:27,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:46:27,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:46:27,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:46:27,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:46:27,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:46:27,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 485 [2023-08-30 11:46:27,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:27,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:46:27,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 485 [2023-08-30 11:46:27,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:46:46,897 INFO L130 PetriNetUnfolder]: 184981/232783 cut-off events. [2023-08-30 11:46:46,897 INFO L131 PetriNetUnfolder]: For 16631/16631 co-relation queries the response was YES. [2023-08-30 11:46:47,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528401 conditions, 232783 events. 184981/232783 cut-off events. For 16631/16631 co-relation queries the response was YES. Maximal size of possible extension queue 15765. Compared 1509353 event pairs, 125270 based on Foata normal form. 0/97032 useless extension candidates. Maximal degree in co-relation 528387. Up to 228118 conditions per place. [2023-08-30 11:46:48,685 INFO L137 encePairwiseOnDemand]: 482/485 looper letters, 57 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-08-30 11:46:48,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 342 flow [2023-08-30 11:46:48,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:46:48,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:46:48,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 645 transitions. [2023-08-30 11:46:48,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44329896907216493 [2023-08-30 11:46:48,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 645 transitions. [2023-08-30 11:46:48,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 645 transitions. [2023-08-30 11:46:48,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:46:48,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 645 transitions. [2023-08-30 11:46:48,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:48,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:48,721 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:48,722 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 234 flow. Second operand 3 states and 645 transitions. [2023-08-30 11:46:48,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 342 flow [2023-08-30 11:46:48,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 64 transitions, 336 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 11:46:48,793 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 222 flow [2023-08-30 11:46:48,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=485, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2023-08-30 11:46:48,796 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -5 predicate places. [2023-08-30 11:46:48,796 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 222 flow [2023-08-30 11:46:48,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:48,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:46:48,797 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 11:46:48,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 11:46:48,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:46:48,997 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:46:48,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:46:48,998 INFO L85 PathProgramCache]: Analyzing trace with hash -574694134, now seen corresponding path program 1 times [2023-08-30 11:46:48,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:46:48,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882705368] [2023-08-30 11:46:48,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:46:48,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:46:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:46:49,153 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:46:49,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:46:49,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882705368] [2023-08-30 11:46:49,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882705368] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:46:49,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253013581] [2023-08-30 11:46:49,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:46:49,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:46:49,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:46:49,156 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:46:49,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 11:46:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:46:49,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 11:46:49,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:46:49,350 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:46:49,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:46:49,401 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:46:49,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253013581] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:46:49,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:46:49,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 11:46:49,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074472016] [2023-08-30 11:46:49,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:46:49,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:46:49,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:46:49,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:46:49,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:46:49,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 485 [2023-08-30 11:46:49,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 222 flow. Second operand has 13 states, 13 states have (on average 196.15384615384616) internal successors, (2550), 13 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:49,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:46:49,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 485 [2023-08-30 11:46:49,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand