./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/test-easy6.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/test-easy6.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 e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e --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 12:04:58,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:04:58,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:04:58,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:04:58,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:04:58,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:04:58,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:04:58,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:04:58,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:04:58,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:04:58,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:04:58,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:04:58,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:04:58,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:04:58,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:04:58,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:04:58,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:04:58,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:04:58,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:04:58,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:04:58,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:04:58,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:04:58,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:04:58,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:04:58,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:04:58,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:04:58,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:04:58,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:04:58,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:04:58,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:04:58,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:04:58,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:04:58,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:04:58,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:04:58,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:04:58,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:04:58,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:04:58,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:04:58,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:04:58,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:04:58,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:04:58,521 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:04:58,566 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:04:58,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:04:58,567 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:04:58,567 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:04:58,568 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:04:58,568 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:04:58,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:04:58,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:04:58,569 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:04:58,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:04:58,570 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:04:58,571 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:04:58,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:04:58,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:04:58,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:04:58,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:04:58,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:04:58,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:04:58,572 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:04:58,572 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:04:58,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:04:58,572 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:04:58,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:04:58,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:04:58,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:04:58,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:04:58,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:04:58,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:04:58,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:04:58,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:04:58,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:04:58,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:04:58,575 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:04:58,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:04:58,575 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:04:58,575 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:04:58,575 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:04:58,576 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 12:04:58,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:04:58,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:04:58,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:04:58,967 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:04:58,968 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:04:58,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c [2023-08-30 12:05:00,654 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:05:01,000 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:05:01,001 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c [2023-08-30 12:05:01,010 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1346488d3/b5e5bfc0fb9443b8b26c4edf6da780c7/FLAG86920b036 [2023-08-30 12:05:01,034 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1346488d3/b5e5bfc0fb9443b8b26c4edf6da780c7 [2023-08-30 12:05:01,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:05:01,038 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:05:01,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:05:01,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:05:01,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:05:01,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:05:01" (1/1) ... [2023-08-30 12:05:01,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50078650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:01, skipping insertion in model container [2023-08-30 12:05:01,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:05:01" (1/1) ... [2023-08-30 12:05:01,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:05:01,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:05:01,265 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/test-easy6.wvr.c[3046,3059] [2023-08-30 12:05:01,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:05:01,279 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:05:01,313 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/test-easy6.wvr.c[3046,3059] [2023-08-30 12:05:01,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:05:01,337 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 12:05:01,338 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 12:05:01,345 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:05:01,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:01 WrapperNode [2023-08-30 12:05:01,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:05:01,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:05:01,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:05:01,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:05:01,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:01" (1/1) ... [2023-08-30 12:05:01,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:01" (1/1) ... [2023-08-30 12:05:01,403 INFO L138 Inliner]: procedures = 21, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 131 [2023-08-30 12:05:01,404 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:05:01,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:05:01,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:05:01,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:05:01,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:01" (1/1) ... [2023-08-30 12:05:01,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:01" (1/1) ... [2023-08-30 12:05:01,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:01" (1/1) ... [2023-08-30 12:05:01,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:01" (1/1) ... [2023-08-30 12:05:01,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:01" (1/1) ... [2023-08-30 12:05:01,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:01" (1/1) ... [2023-08-30 12:05:01,444 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:01" (1/1) ... [2023-08-30 12:05:01,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:01" (1/1) ... [2023-08-30 12:05:01,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:05:01,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:05:01,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:05:01,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:05:01,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:01" (1/1) ... [2023-08-30 12:05:01,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:05:01,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:05:01,484 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 12:05:01,523 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 12:05:01,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:05:01,579 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 12:05:01,579 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 12:05:01,579 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 12:05:01,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 12:05:01,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:05:01,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:05:01,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:05:01,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 12:05:01,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 12:05:01,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:05:01,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:05:01,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:05:01,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:05:01,582 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 12:05:01,741 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:05:01,743 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:05:02,078 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:05:02,198 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:05:02,199 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 12:05:02,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:05:02 BoogieIcfgContainer [2023-08-30 12:05:02,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:05:02,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:05:02,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:05:02,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:05:02,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:05:01" (1/3) ... [2023-08-30 12:05:02,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f32eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:05:02, skipping insertion in model container [2023-08-30 12:05:02,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:01" (2/3) ... [2023-08-30 12:05:02,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f32eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:05:02, skipping insertion in model container [2023-08-30 12:05:02,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:05:02" (3/3) ... [2023-08-30 12:05:02,221 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2023-08-30 12:05:02,230 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:05:02,240 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:05:02,240 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 12:05:02,241 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:05:02,377 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 12:05:02,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 84 transitions, 184 flow [2023-08-30 12:05:02,498 INFO L130 PetriNetUnfolder]: 1/82 cut-off events. [2023-08-30 12:05:02,501 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:05:02,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 82 events. 1/82 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2023-08-30 12:05:02,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 84 transitions, 184 flow [2023-08-30 12:05:02,511 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 66 transitions, 141 flow [2023-08-30 12:05:02,515 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:05:02,528 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 66 transitions, 141 flow [2023-08-30 12:05:02,535 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 66 transitions, 141 flow [2023-08-30 12:05:02,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 66 transitions, 141 flow [2023-08-30 12:05:02,571 INFO L130 PetriNetUnfolder]: 0/66 cut-off events. [2023-08-30 12:05:02,571 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:05:02,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 66 events. 0/66 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 70 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-30 12:05:02,573 INFO L119 LiptonReduction]: Number of co-enabled transitions 900 [2023-08-30 12:05:04,289 INFO L134 LiptonReduction]: Checked pairs total: 5553 [2023-08-30 12:05:04,289 INFO L136 LiptonReduction]: Total number of compositions: 41 [2023-08-30 12:05:04,302 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:05:04,310 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;@5be4e7e2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:05:04,310 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 12:05:04,318 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-30 12:05:04,319 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:05:04,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:05:04,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 12:05:04,329 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:05:04,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:05:04,337 INFO L85 PathProgramCache]: Analyzing trace with hash 11036619, now seen corresponding path program 1 times [2023-08-30 12:05:04,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:05:04,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539702079] [2023-08-30 12:05:04,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:05:04,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:05:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:04,532 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 12:05:04,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:05:04,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539702079] [2023-08-30 12:05:04,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539702079] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:05:04,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:05:04,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:05:04,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920247544] [2023-08-30 12:05:04,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:05:04,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:05:04,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:05:04,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:05:04,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:05:04,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 125 [2023-08-30 12:05:04,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:04,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:05:04,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 125 [2023-08-30 12:05:04,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:05:04,686 INFO L130 PetriNetUnfolder]: 271/555 cut-off events. [2023-08-30 12:05:04,687 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-08-30 12:05:04,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 555 events. 271/555 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2899 event pairs, 115 based on Foata normal form. 10/481 useless extension candidates. Maximal degree in co-relation 983. Up to 309 conditions per place. [2023-08-30 12:05:04,695 INFO L137 encePairwiseOnDemand]: 120/125 looper letters, 32 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2023-08-30 12:05:04,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 43 transitions, 168 flow [2023-08-30 12:05:04,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:05:04,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:05:04,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-08-30 12:05:04,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6106666666666667 [2023-08-30 12:05:04,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-08-30 12:05:04,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-08-30 12:05:04,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:05:04,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-08-30 12:05:04,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:04,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:04,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:04,746 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 75 flow. Second operand 3 states and 229 transitions. [2023-08-30 12:05:04,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 43 transitions, 168 flow [2023-08-30 12:05:04,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 161 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 12:05:04,753 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 83 flow [2023-08-30 12:05:04,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2023-08-30 12:05:04,762 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2023-08-30 12:05:04,762 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 83 flow [2023-08-30 12:05:04,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:04,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:05:04,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 12:05:04,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:05:04,769 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:05:04,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:05:04,778 INFO L85 PathProgramCache]: Analyzing trace with hash 2018329128, now seen corresponding path program 1 times [2023-08-30 12:05:04,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:05:04,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102955955] [2023-08-30 12:05:04,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:05:04,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:05:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:04,923 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 12:05:04,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:05:04,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102955955] [2023-08-30 12:05:04,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102955955] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:05:04,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:05:04,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:05:04,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803712818] [2023-08-30 12:05:04,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:05:04,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:05:04,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:05:04,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:05:04,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:05:04,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 125 [2023-08-30 12:05:04,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:04,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:05:04,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 125 [2023-08-30 12:05:04,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:05:05,048 INFO L130 PetriNetUnfolder]: 257/534 cut-off events. [2023-08-30 12:05:05,048 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2023-08-30 12:05:05,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1116 conditions, 534 events. 257/534 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2834 event pairs, 101 based on Foata normal form. 4/464 useless extension candidates. Maximal degree in co-relation 905. Up to 309 conditions per place. [2023-08-30 12:05:05,053 INFO L137 encePairwiseOnDemand]: 120/125 looper letters, 32 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2023-08-30 12:05:05,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 43 transitions, 181 flow [2023-08-30 12:05:05,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:05:05,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:05:05,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-08-30 12:05:05,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6106666666666667 [2023-08-30 12:05:05,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-08-30 12:05:05,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-08-30 12:05:05,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:05:05,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-08-30 12:05:05,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:05,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:05,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:05,059 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 83 flow. Second operand 3 states and 229 transitions. [2023-08-30 12:05:05,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 43 transitions, 181 flow [2023-08-30 12:05:05,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 43 transitions, 171 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:05:05,061 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 90 flow [2023-08-30 12:05:05,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2023-08-30 12:05:05,062 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-30 12:05:05,063 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 90 flow [2023-08-30 12:05:05,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:05,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:05:05,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:05:05,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:05:05,064 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:05:05,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:05:05,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1500030045, now seen corresponding path program 1 times [2023-08-30 12:05:05,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:05:05,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260033343] [2023-08-30 12:05:05,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:05:05,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:05:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:05,196 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 12:05:05,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:05:05,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260033343] [2023-08-30 12:05:05,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260033343] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:05:05,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:05:05,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:05:05,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038720936] [2023-08-30 12:05:05,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:05:05,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:05:05,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:05:05,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:05:05,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:05:05,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 125 [2023-08-30 12:05:05,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:05,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:05:05,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 125 [2023-08-30 12:05:05,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:05:05,399 INFO L130 PetriNetUnfolder]: 414/846 cut-off events. [2023-08-30 12:05:05,399 INFO L131 PetriNetUnfolder]: For 127/129 co-relation queries the response was YES. [2023-08-30 12:05:05,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1788 conditions, 846 events. 414/846 cut-off events. For 127/129 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4632 event pairs, 26 based on Foata normal form. 1/756 useless extension candidates. Maximal degree in co-relation 851. Up to 303 conditions per place. [2023-08-30 12:05:05,404 INFO L137 encePairwiseOnDemand]: 116/125 looper letters, 56 selfloop transitions, 13 changer transitions 4/80 dead transitions. [2023-08-30 12:05:05,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 80 transitions, 354 flow [2023-08-30 12:05:05,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:05:05,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:05:05,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 487 transitions. [2023-08-30 12:05:05,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565714285714286 [2023-08-30 12:05:05,408 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 487 transitions. [2023-08-30 12:05:05,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 487 transitions. [2023-08-30 12:05:05,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:05:05,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 487 transitions. [2023-08-30 12:05:05,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:05,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 125.0) internal successors, (1000), 8 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:05,412 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 125.0) internal successors, (1000), 8 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:05,413 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 90 flow. Second operand 7 states and 487 transitions. [2023-08-30 12:05:05,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 80 transitions, 354 flow [2023-08-30 12:05:05,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 80 transitions, 336 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:05:05,416 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 149 flow [2023-08-30 12:05:05,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=149, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-08-30 12:05:05,417 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2023-08-30 12:05:05,420 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 149 flow [2023-08-30 12:05:05,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:05,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:05:05,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:05:05,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 12:05:05,421 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:05:05,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:05:05,422 INFO L85 PathProgramCache]: Analyzing trace with hash -65120894, now seen corresponding path program 1 times [2023-08-30 12:05:05,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:05:05,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169039500] [2023-08-30 12:05:05,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:05:05,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:05:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:05,537 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 12:05:05,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:05:05,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169039500] [2023-08-30 12:05:05,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169039500] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:05:05,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:05:05,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:05:05,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310620102] [2023-08-30 12:05:05,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:05:05,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:05:05,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:05:05,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:05:05,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:05:05,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 125 [2023-08-30 12:05:05,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:05,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:05:05,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 125 [2023-08-30 12:05:05,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:05:05,731 INFO L130 PetriNetUnfolder]: 395/807 cut-off events. [2023-08-30 12:05:05,731 INFO L131 PetriNetUnfolder]: For 294/300 co-relation queries the response was YES. [2023-08-30 12:05:05,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1888 conditions, 807 events. 395/807 cut-off events. For 294/300 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4333 event pairs, 39 based on Foata normal form. 12/728 useless extension candidates. Maximal degree in co-relation 965. Up to 270 conditions per place. [2023-08-30 12:05:05,737 INFO L137 encePairwiseOnDemand]: 116/125 looper letters, 54 selfloop transitions, 13 changer transitions 3/77 dead transitions. [2023-08-30 12:05:05,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 77 transitions, 372 flow [2023-08-30 12:05:05,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:05:05,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:05:05,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 482 transitions. [2023-08-30 12:05:05,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508571428571428 [2023-08-30 12:05:05,745 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 482 transitions. [2023-08-30 12:05:05,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 482 transitions. [2023-08-30 12:05:05,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:05:05,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 482 transitions. [2023-08-30 12:05:05,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:05,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 125.0) internal successors, (1000), 8 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:05,749 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 125.0) internal successors, (1000), 8 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:05,749 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 149 flow. Second operand 7 states and 482 transitions. [2023-08-30 12:05:05,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 77 transitions, 372 flow [2023-08-30 12:05:05,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 77 transitions, 353 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 12:05:05,758 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 164 flow [2023-08-30 12:05:05,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=164, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2023-08-30 12:05:05,761 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2023-08-30 12:05:05,761 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 164 flow [2023-08-30 12:05:05,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:05,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:05:05,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:05:05,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 12:05:05,762 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:05:05,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:05:05,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1499536200, now seen corresponding path program 1 times [2023-08-30 12:05:05,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:05:05,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493331494] [2023-08-30 12:05:05,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:05:05,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:05:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:05,843 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 12:05:05,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:05:05,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493331494] [2023-08-30 12:05:05,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493331494] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:05:05,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:05:05,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:05:05,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004408829] [2023-08-30 12:05:05,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:05:05,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:05:05,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:05:05,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:05:05,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:05:05,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 125 [2023-08-30 12:05:05,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:05,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:05:05,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 125 [2023-08-30 12:05:05,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:05:06,031 INFO L130 PetriNetUnfolder]: 534/1093 cut-off events. [2023-08-30 12:05:06,032 INFO L131 PetriNetUnfolder]: For 433/443 co-relation queries the response was YES. [2023-08-30 12:05:06,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2494 conditions, 1093 events. 534/1093 cut-off events. For 433/443 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6471 event pairs, 164 based on Foata normal form. 10/994 useless extension candidates. Maximal degree in co-relation 2248. Up to 468 conditions per place. [2023-08-30 12:05:06,038 INFO L137 encePairwiseOnDemand]: 118/125 looper letters, 59 selfloop transitions, 14 changer transitions 2/83 dead transitions. [2023-08-30 12:05:06,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 83 transitions, 423 flow [2023-08-30 12:05:06,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:05:06,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:05:06,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 482 transitions. [2023-08-30 12:05:06,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508571428571428 [2023-08-30 12:05:06,041 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 482 transitions. [2023-08-30 12:05:06,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 482 transitions. [2023-08-30 12:05:06,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:05:06,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 482 transitions. [2023-08-30 12:05:06,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:06,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 125.0) internal successors, (1000), 8 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:06,045 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 125.0) internal successors, (1000), 8 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:06,045 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 164 flow. Second operand 7 states and 482 transitions. [2023-08-30 12:05:06,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 83 transitions, 423 flow [2023-08-30 12:05:06,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 83 transitions, 381 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-30 12:05:06,050 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 208 flow [2023-08-30 12:05:06,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=208, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2023-08-30 12:05:06,051 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 15 predicate places. [2023-08-30 12:05:06,051 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 208 flow [2023-08-30 12:05:06,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:06,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:05:06,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:05:06,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 12:05:06,052 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:05:06,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:05:06,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1499536201, now seen corresponding path program 1 times [2023-08-30 12:05:06,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:05:06,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449901607] [2023-08-30 12:05:06,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:05:06,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:05:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:06,143 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 12:05:06,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:05:06,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449901607] [2023-08-30 12:05:06,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449901607] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:05:06,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:05:06,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:05:06,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938141270] [2023-08-30 12:05:06,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:05:06,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:05:06,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:05:06,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:05:06,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:05:06,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 125 [2023-08-30 12:05:06,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 208 flow. Second operand has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:06,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:05:06,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 125 [2023-08-30 12:05:06,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:05:06,416 INFO L130 PetriNetUnfolder]: 513/1062 cut-off events. [2023-08-30 12:05:06,417 INFO L131 PetriNetUnfolder]: For 656/666 co-relation queries the response was YES. [2023-08-30 12:05:06,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2506 conditions, 1062 events. 513/1062 cut-off events. For 656/666 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6234 event pairs, 39 based on Foata normal form. 22/977 useless extension candidates. Maximal degree in co-relation 2248. Up to 348 conditions per place. [2023-08-30 12:05:06,424 INFO L137 encePairwiseOnDemand]: 118/125 looper letters, 55 selfloop transitions, 17 changer transitions 1/81 dead transitions. [2023-08-30 12:05:06,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 425 flow [2023-08-30 12:05:06,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:05:06,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:05:06,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 481 transitions. [2023-08-30 12:05:06,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5497142857142857 [2023-08-30 12:05:06,426 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 481 transitions. [2023-08-30 12:05:06,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 481 transitions. [2023-08-30 12:05:06,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:05:06,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 481 transitions. [2023-08-30 12:05:06,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.71428571428571) internal successors, (481), 7 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:06,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 125.0) internal successors, (1000), 8 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:06,431 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 125.0) internal successors, (1000), 8 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:06,431 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 208 flow. Second operand 7 states and 481 transitions. [2023-08-30 12:05:06,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 425 flow [2023-08-30 12:05:06,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 81 transitions, 417 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:05:06,437 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 229 flow [2023-08-30 12:05:06,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=229, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2023-08-30 12:05:06,438 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 19 predicate places. [2023-08-30 12:05:06,438 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 229 flow [2023-08-30 12:05:06,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:06,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:05:06,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:05:06,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 12:05:06,439 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:05:06,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:05:06,440 INFO L85 PathProgramCache]: Analyzing trace with hash -126915986, now seen corresponding path program 1 times [2023-08-30 12:05:06,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:05:06,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147840023] [2023-08-30 12:05:06,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:05:06,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:05:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:06,471 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 12:05:06,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:05:06,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147840023] [2023-08-30 12:05:06,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147840023] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:05:06,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:05:06,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:05:06,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344414415] [2023-08-30 12:05:06,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:05:06,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:05:06,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:05:06,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:05:06,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:05:06,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 125 [2023-08-30 12:05:06,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:06,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:05:06,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 125 [2023-08-30 12:05:06,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:05:06,559 INFO L130 PetriNetUnfolder]: 321/684 cut-off events. [2023-08-30 12:05:06,559 INFO L131 PetriNetUnfolder]: For 826/834 co-relation queries the response was YES. [2023-08-30 12:05:06,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 684 events. 321/684 cut-off events. For 826/834 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3709 event pairs, 135 based on Foata normal form. 54/689 useless extension candidates. Maximal degree in co-relation 1590. Up to 445 conditions per place. [2023-08-30 12:05:06,564 INFO L137 encePairwiseOnDemand]: 118/125 looper letters, 45 selfloop transitions, 3 changer transitions 2/60 dead transitions. [2023-08-30 12:05:06,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 399 flow [2023-08-30 12:05:06,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:05:06,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:05:06,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-08-30 12:05:06,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.616 [2023-08-30 12:05:06,566 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-08-30 12:05:06,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-08-30 12:05:06,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:05:06,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-08-30 12:05:06,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:06,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:06,568 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:06,568 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 229 flow. Second operand 3 states and 231 transitions. [2023-08-30 12:05:06,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 399 flow [2023-08-30 12:05:06,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 60 transitions, 358 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-08-30 12:05:06,573 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 214 flow [2023-08-30 12:05:06,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2023-08-30 12:05:06,574 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 16 predicate places. [2023-08-30 12:05:06,575 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 214 flow [2023-08-30 12:05:06,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:06,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:05:06,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:05:06,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 12:05:06,575 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:05:06,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:05:06,576 INFO L85 PathProgramCache]: Analyzing trace with hash -936012775, now seen corresponding path program 1 times [2023-08-30 12:05:06,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:05:06,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854961785] [2023-08-30 12:05:06,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:05:06,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:05:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:06,660 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 12:05:06,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:05:06,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854961785] [2023-08-30 12:05:06,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854961785] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:05:06,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:05:06,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:05:06,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106323903] [2023-08-30 12:05:06,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:05:06,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:05:06,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:05:06,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:05:06,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:05:06,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 125 [2023-08-30 12:05:06,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 214 flow. Second operand has 5 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:06,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:05:06,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 125 [2023-08-30 12:05:06,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:05:06,810 INFO L130 PetriNetUnfolder]: 308/659 cut-off events. [2023-08-30 12:05:06,810 INFO L131 PetriNetUnfolder]: For 483/499 co-relation queries the response was YES. [2023-08-30 12:05:06,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1780 conditions, 659 events. 308/659 cut-off events. For 483/499 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3650 event pairs, 126 based on Foata normal form. 16/644 useless extension candidates. Maximal degree in co-relation 1133. Up to 229 conditions per place. [2023-08-30 12:05:06,815 INFO L137 encePairwiseOnDemand]: 118/125 looper letters, 52 selfloop transitions, 5 changer transitions 1/67 dead transitions. [2023-08-30 12:05:06,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 67 transitions, 429 flow [2023-08-30 12:05:06,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:05:06,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:05:06,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 409 transitions. [2023-08-30 12:05:06,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5453333333333333 [2023-08-30 12:05:06,817 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 409 transitions. [2023-08-30 12:05:06,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 409 transitions. [2023-08-30 12:05:06,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:05:06,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 409 transitions. [2023-08-30 12:05:06,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:06,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:06,821 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:06,821 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 214 flow. Second operand 6 states and 409 transitions. [2023-08-30 12:05:06,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 67 transitions, 429 flow [2023-08-30 12:05:06,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 67 transitions, 426 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:05:06,824 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 222 flow [2023-08-30 12:05:06,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2023-08-30 12:05:06,825 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 20 predicate places. [2023-08-30 12:05:06,825 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 222 flow [2023-08-30 12:05:06,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:06,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:05:06,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:05:06,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 12:05:06,826 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:05:06,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:05:06,827 INFO L85 PathProgramCache]: Analyzing trace with hash -2138187684, now seen corresponding path program 1 times [2023-08-30 12:05:06,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:05:06,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024923795] [2023-08-30 12:05:06,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:05:06,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:05:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:06,888 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 12:05:06,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:05:06,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024923795] [2023-08-30 12:05:06,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024923795] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:05:06,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:05:06,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:05:06,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714816099] [2023-08-30 12:05:06,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:05:06,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:05:06,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:05:06,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:05:06,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:05:06,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 125 [2023-08-30 12:05:06,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:06,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:05:06,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 125 [2023-08-30 12:05:06,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:05:07,006 INFO L130 PetriNetUnfolder]: 278/599 cut-off events. [2023-08-30 12:05:07,006 INFO L131 PetriNetUnfolder]: For 634/650 co-relation queries the response was YES. [2023-08-30 12:05:07,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1684 conditions, 599 events. 278/599 cut-off events. For 634/650 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3306 event pairs, 114 based on Foata normal form. 34/602 useless extension candidates. Maximal degree in co-relation 1065. Up to 229 conditions per place. [2023-08-30 12:05:07,010 INFO L137 encePairwiseOnDemand]: 119/125 looper letters, 34 selfloop transitions, 4 changer transitions 18/65 dead transitions. [2023-08-30 12:05:07,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 65 transitions, 431 flow [2023-08-30 12:05:07,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:05:07,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:05:07,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 407 transitions. [2023-08-30 12:05:07,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5426666666666666 [2023-08-30 12:05:07,012 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 407 transitions. [2023-08-30 12:05:07,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 407 transitions. [2023-08-30 12:05:07,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:05:07,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 407 transitions. [2023-08-30 12:05:07,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:07,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:07,015 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:07,015 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 222 flow. Second operand 6 states and 407 transitions. [2023-08-30 12:05:07,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 65 transitions, 431 flow [2023-08-30 12:05:07,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 65 transitions, 419 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 12:05:07,018 INFO L231 Difference]: Finished difference. Result has 61 places, 33 transitions, 157 flow [2023-08-30 12:05:07,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=157, PETRI_PLACES=61, PETRI_TRANSITIONS=33} [2023-08-30 12:05:07,019 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 21 predicate places. [2023-08-30 12:05:07,020 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 33 transitions, 157 flow [2023-08-30 12:05:07,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:07,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:05:07,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:05:07,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 12:05:07,020 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:05:07,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:05:07,021 INFO L85 PathProgramCache]: Analyzing trace with hash -935997907, now seen corresponding path program 1 times [2023-08-30 12:05:07,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:05:07,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129198783] [2023-08-30 12:05:07,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:05:07,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:05:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:07,112 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 12:05:07,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:05:07,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129198783] [2023-08-30 12:05:07,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129198783] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:05:07,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:05:07,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:05:07,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423294565] [2023-08-30 12:05:07,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:05:07,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:05:07,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:05:07,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:05:07,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:05:07,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 125 [2023-08-30 12:05:07,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 33 transitions, 157 flow. Second operand has 5 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:07,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:05:07,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 125 [2023-08-30 12:05:07,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:05:07,180 INFO L130 PetriNetUnfolder]: 182/375 cut-off events. [2023-08-30 12:05:07,180 INFO L131 PetriNetUnfolder]: For 356/364 co-relation queries the response was YES. [2023-08-30 12:05:07,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 375 events. 182/375 cut-off events. For 356/364 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1745 event pairs, 114 based on Foata normal form. 8/365 useless extension candidates. Maximal degree in co-relation 705. Up to 225 conditions per place. [2023-08-30 12:05:07,183 INFO L137 encePairwiseOnDemand]: 122/125 looper letters, 28 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-08-30 12:05:07,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 38 transitions, 239 flow [2023-08-30 12:05:07,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:05:07,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:05:07,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 268 transitions. [2023-08-30 12:05:07,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536 [2023-08-30 12:05:07,185 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 268 transitions. [2023-08-30 12:05:07,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 268 transitions. [2023-08-30 12:05:07,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:05:07,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 268 transitions. [2023-08-30 12:05:07,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:07,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:07,187 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:07,187 INFO L175 Difference]: Start difference. First operand has 61 places, 33 transitions, 157 flow. Second operand 4 states and 268 transitions. [2023-08-30 12:05:07,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 38 transitions, 239 flow [2023-08-30 12:05:07,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 38 transitions, 215 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 12:05:07,189 INFO L231 Difference]: Finished difference. Result has 45 places, 32 transitions, 134 flow [2023-08-30 12:05:07,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=45, PETRI_TRANSITIONS=32} [2023-08-30 12:05:07,190 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2023-08-30 12:05:07,190 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 32 transitions, 134 flow [2023-08-30 12:05:07,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:07,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:05:07,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:05:07,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 12:05:07,192 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:05:07,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:05:07,192 INFO L85 PathProgramCache]: Analyzing trace with hash -935997908, now seen corresponding path program 1 times [2023-08-30 12:05:07,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:05:07,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518191996] [2023-08-30 12:05:07,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:05:07,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:05:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:07,249 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 12:05:07,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:05:07,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518191996] [2023-08-30 12:05:07,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518191996] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:05:07,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:05:07,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:05:07,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366751401] [2023-08-30 12:05:07,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:05:07,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:05:07,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:05:07,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:05:07,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:05:07,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 125 [2023-08-30 12:05:07,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 32 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:07,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:05:07,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 125 [2023-08-30 12:05:07,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:05:07,319 INFO L130 PetriNetUnfolder]: 170/351 cut-off events. [2023-08-30 12:05:07,320 INFO L131 PetriNetUnfolder]: For 151/159 co-relation queries the response was YES. [2023-08-30 12:05:07,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 351 events. 170/351 cut-off events. For 151/159 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1658 event pairs, 108 based on Foata normal form. 20/353 useless extension candidates. Maximal degree in co-relation 629. Up to 225 conditions per place. [2023-08-30 12:05:07,321 INFO L137 encePairwiseOnDemand]: 122/125 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2023-08-30 12:05:07,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 37 transitions, 213 flow [2023-08-30 12:05:07,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:05:07,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:05:07,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2023-08-30 12:05:07,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.534 [2023-08-30 12:05:07,323 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 267 transitions. [2023-08-30 12:05:07,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 267 transitions. [2023-08-30 12:05:07,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:05:07,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 267 transitions. [2023-08-30 12:05:07,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:07,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:07,325 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:07,325 INFO L175 Difference]: Start difference. First operand has 45 places, 32 transitions, 134 flow. Second operand 4 states and 267 transitions. [2023-08-30 12:05:07,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 37 transitions, 213 flow [2023-08-30 12:05:07,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 37 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:05:07,327 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-08-30 12:05:07,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-08-30 12:05:07,328 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2023-08-30 12:05:07,328 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-08-30 12:05:07,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:07,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-08-30 12:05:07,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-30 12:05:07,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-30 12:05:07,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-30 12:05:07,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-30 12:05:07,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-30 12:05:07,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-30 12:05:07,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-30 12:05:07,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2023-08-30 12:05:07,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-08-30 12:05:07,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-30 12:05:07,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-30 12:05:07,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-30 12:05:07,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-30 12:05:07,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-30 12:05:07,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-30 12:05:07,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-30 12:05:07,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-30 12:05:07,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 12:05:07,341 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:05:07,346 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 12:05:07,346 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 12:05:07,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 12:05:07 BasicIcfg [2023-08-30 12:05:07,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 12:05:07,350 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 12:05:07,350 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 12:05:07,350 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 12:05:07,350 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:05:02" (3/4) ... [2023-08-30 12:05:07,353 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 12:05:07,357 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 12:05:07,357 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 12:05:07,361 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-08-30 12:05:07,361 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 12:05:07,361 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 12:05:07,361 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 12:05:07,385 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 12:05:07,386 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 12:05:07,386 INFO L158 Benchmark]: Toolchain (without parser) took 6348.21ms. Allocated memory was 60.8MB in the beginning and 132.1MB in the end (delta: 71.3MB). Free memory was 39.1MB in the beginning and 106.1MB in the end (delta: -67.0MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2023-08-30 12:05:07,386 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 50.3MB. Free memory was 28.4MB in the beginning and 28.4MB in the end (delta: 33.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:05:07,387 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.26ms. Allocated memory is still 60.8MB. Free memory was 39.0MB in the beginning and 41.7MB in the end (delta: -2.7MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2023-08-30 12:05:07,387 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.62ms. Allocated memory is still 60.8MB. Free memory was 41.5MB in the beginning and 39.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 12:05:07,387 INFO L158 Benchmark]: Boogie Preprocessor took 44.88ms. Allocated memory is still 60.8MB. Free memory was 39.8MB in the beginning and 38.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:05:07,388 INFO L158 Benchmark]: RCFGBuilder took 762.23ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 38.5MB in the beginning and 46.4MB in the end (delta: -7.9MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2023-08-30 12:05:07,388 INFO L158 Benchmark]: TraceAbstraction took 5134.35ms. Allocated memory was 73.4MB in the beginning and 132.1MB in the end (delta: 58.7MB). Free memory was 45.9MB in the beginning and 108.2MB in the end (delta: -62.4MB). Peak memory consumption was 71.6MB. Max. memory is 16.1GB. [2023-08-30 12:05:07,388 INFO L158 Benchmark]: Witness Printer took 36.04ms. Allocated memory is still 132.1MB. Free memory was 108.2MB in the beginning and 106.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:05:07,389 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 50.3MB. Free memory was 28.4MB in the beginning and 28.4MB in the end (delta: 33.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.26ms. Allocated memory is still 60.8MB. Free memory was 39.0MB in the beginning and 41.7MB in the end (delta: -2.7MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.62ms. Allocated memory is still 60.8MB. Free memory was 41.5MB in the beginning and 39.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.88ms. Allocated memory is still 60.8MB. Free memory was 39.8MB in the beginning and 38.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 762.23ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 38.5MB in the beginning and 46.4MB in the end (delta: -7.9MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. * TraceAbstraction took 5134.35ms. Allocated memory was 73.4MB in the beginning and 132.1MB in the end (delta: 58.7MB). Free memory was 45.9MB in the beginning and 108.2MB in the end (delta: -62.4MB). Peak memory consumption was 71.6MB. Max. memory is 16.1GB. * Witness Printer took 36.04ms. Allocated memory is still 132.1MB. Free memory was 108.2MB in the beginning and 106.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 73 PlacesBefore, 40 PlacesAfterwards, 66 TransitionsBefore, 33 TransitionsAfterwards, 900 CoEnabledTransitionPairs, 5 FixpointIterations, 22 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 41 TotalNumberOfCompositions, 5553 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2075, independent: 1797, independent conditional: 0, independent unconditional: 1797, dependent: 278, dependent conditional: 0, dependent unconditional: 278, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 512, independent: 482, independent conditional: 0, independent unconditional: 482, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2075, independent: 1315, independent conditional: 0, independent unconditional: 1315, dependent: 248, dependent conditional: 0, dependent unconditional: 248, unknown: 512, unknown conditional: 0, unknown unconditional: 512] , Statistics on independence cache: Total cache size (in pairs): 171, Positive cache size: 145, Positive conditional cache size: 0, Positive unconditional cache size: 145, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 118 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.9s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 645 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 566 mSDsluCounter, 115 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50 mSDsCounter, 79 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 828 IncrementalHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 79 mSolverCounterUnsat, 65 mSDtfsCounter, 828 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=229occurred in iteration=6, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 360 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 12:05:07,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE