./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.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 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:21:48,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:21:48,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:21:48,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:21:48,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:21:48,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:21:48,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:21:48,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:21:48,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:21:48,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:21:48,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:21:48,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:21:48,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:21:48,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:21:48,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:21:48,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:21:48,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:21:48,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:21:48,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:21:48,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:21:48,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:21:48,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:21:48,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:21:48,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:21:48,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:21:48,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:21:48,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:21:48,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:21:48,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:21:48,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:21:48,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:21:48,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:21:48,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:21:48,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:21:48,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:21:48,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:21:48,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:21:48,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:21:48,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:21:48,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:21:48,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:21:48,185 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:21:48,219 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:21:48,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:21:48,221 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:21:48,221 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:21:48,222 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:21:48,222 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:21:48,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:21:48,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:21:48,223 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:21:48,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:21:48,224 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:21:48,224 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:21:48,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:21:48,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:21:48,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:21:48,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:21:48,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:21:48,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:21:48,225 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:21:48,225 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:21:48,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:21:48,226 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:21:48,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:21:48,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:21:48,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:21:48,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:21:48,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:21:48,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:21:48,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:21:48,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:21:48,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:21:48,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:21:48,228 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:21:48,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:21:48,228 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:21:48,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:21:48,229 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:21:48,229 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:21:48,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:21:48,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:21:48,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:21:48,559 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:21:48,560 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:21:48,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2023-09-01 08:21:49,694 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:21:49,906 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:21:49,907 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2023-09-01 08:21:49,913 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94dc11f31/6f0d1d0873864ad2a7f47628937ebb30/FLAG6ccce26b1 [2023-09-01 08:21:49,927 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94dc11f31/6f0d1d0873864ad2a7f47628937ebb30 [2023-09-01 08:21:49,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:21:49,931 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:21:49,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:21:49,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:21:49,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:21:49,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:21:49" (1/1) ... [2023-09-01 08:21:49,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10b1303f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:21:49, skipping insertion in model container [2023-09-01 08:21:49,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:21:49" (1/1) ... [2023-09-01 08:21:49,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:21:49,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:21:50,154 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2023-09-01 08:21:50,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:21:50,186 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:21:50,227 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2023-09-01 08:21:50,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:21:50,269 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:21:50,270 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:21:50,275 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:21:50,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:21:50 WrapperNode [2023-09-01 08:21:50,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:21:50,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:21:50,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:21:50,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:21:50,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:21:50" (1/1) ... [2023-09-01 08:21:50,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:21:50" (1/1) ... [2023-09-01 08:21:50,360 INFO L138 Inliner]: procedures = 28, calls = 80, calls flagged for inlining = 26, calls inlined = 32, statements flattened = 434 [2023-09-01 08:21:50,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:21:50,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:21:50,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:21:50,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:21:50,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:21:50" (1/1) ... [2023-09-01 08:21:50,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:21:50" (1/1) ... [2023-09-01 08:21:50,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:21:50" (1/1) ... [2023-09-01 08:21:50,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:21:50" (1/1) ... [2023-09-01 08:21:50,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:21:50" (1/1) ... [2023-09-01 08:21:50,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:21:50" (1/1) ... [2023-09-01 08:21:50,424 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:21:50" (1/1) ... [2023-09-01 08:21:50,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:21:50" (1/1) ... [2023-09-01 08:21:50,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:21:50,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:21:50,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:21:50,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:21:50,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:21:50" (1/1) ... [2023-09-01 08:21:50,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:21:50,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:21:50,465 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 08:21:50,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 08:21:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:21:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 08:21:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:21:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:21:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:21:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-09-01 08:21:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:21:50,505 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:21:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:21:50,505 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:21:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:21:50,506 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:21:50,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:21:50,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:21:50,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:21:50,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:21:50,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:21:50,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:21:50,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:21:50,508 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:21:50,613 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:21:50,615 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:21:51,302 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:21:51,516 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:21:51,516 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-09-01 08:21:51,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:21:51 BoogieIcfgContainer [2023-09-01 08:21:51,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:21:51,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:21:51,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:21:51,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:21:51,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:21:49" (1/3) ... [2023-09-01 08:21:51,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c70485a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:21:51, skipping insertion in model container [2023-09-01 08:21:51,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:21:50" (2/3) ... [2023-09-01 08:21:51,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c70485a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:21:51, skipping insertion in model container [2023-09-01 08:21:51,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:21:51" (3/3) ... [2023-09-01 08:21:51,528 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2023-09-01 08:21:51,534 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:21:51,541 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:21:51,542 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-09-01 08:21:51,542 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:21:51,660 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 08:21:51,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 394 places, 421 transitions, 866 flow [2023-09-01 08:21:51,870 INFO L130 PetriNetUnfolder]: 37/418 cut-off events. [2023-09-01 08:21:51,870 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:21:51,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 418 events. 37/418 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 585 event pairs, 0 based on Foata normal form. 0/357 useless extension candidates. Maximal degree in co-relation 341. Up to 2 conditions per place. [2023-09-01 08:21:51,878 INFO L82 GeneralOperation]: Start removeDead. Operand has 394 places, 421 transitions, 866 flow [2023-09-01 08:21:51,888 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 400 transitions, 815 flow [2023-09-01 08:21:51,894 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:21:51,902 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 374 places, 400 transitions, 815 flow [2023-09-01 08:21:51,906 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 374 places, 400 transitions, 815 flow [2023-09-01 08:21:51,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 400 transitions, 815 flow [2023-09-01 08:21:51,965 INFO L130 PetriNetUnfolder]: 36/400 cut-off events. [2023-09-01 08:21:51,966 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:21:51,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 400 events. 36/400 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 543 event pairs, 0 based on Foata normal form. 0/340 useless extension candidates. Maximal degree in co-relation 341. Up to 2 conditions per place. [2023-09-01 08:21:51,980 INFO L119 LiptonReduction]: Number of co-enabled transitions 6514 [2023-09-01 08:22:06,673 INFO L134 LiptonReduction]: Checked pairs total: 8096 [2023-09-01 08:22:06,673 INFO L136 LiptonReduction]: Total number of compositions: 463 [2023-09-01 08:22:06,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:22:06,691 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;@1c082c78, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:22:06,691 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-09-01 08:22:06,694 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:22:06,694 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:22:06,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:22:06,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:22:06,696 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:22:06,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:22:06,700 INFO L85 PathProgramCache]: Analyzing trace with hash 58938, now seen corresponding path program 1 times [2023-09-01 08:22:06,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:22:06,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444984228] [2023-09-01 08:22:06,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:06,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:22:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:07,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:22:07,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:22:07,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444984228] [2023-09-01 08:22:07,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444984228] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:22:07,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:22:07,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:22:07,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811238606] [2023-09-01 08:22:07,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:22:07,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:22:07,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:22:07,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:22:07,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:22:07,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 884 [2023-09-01 08:22:07,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 361.6666666666667) internal successors, (1085), 3 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:07,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:22:07,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 884 [2023-09-01 08:22:07,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:22:07,619 INFO L130 PetriNetUnfolder]: 1165/1771 cut-off events. [2023-09-01 08:22:07,619 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-09-01 08:22:07,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3735 conditions, 1771 events. 1165/1771 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 9396 event pairs, 890 based on Foata normal form. 0/927 useless extension candidates. Maximal degree in co-relation 1680. Up to 875 conditions per place. [2023-09-01 08:22:07,633 INFO L137 encePairwiseOnDemand]: 862/884 looper letters, 77 selfloop transitions, 8 changer transitions 4/91 dead transitions. [2023-09-01 08:22:07,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 91 transitions, 390 flow [2023-09-01 08:22:07,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:22:07,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:22:07,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1192 transitions. [2023-09-01 08:22:07,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494720965309201 [2023-09-01 08:22:07,653 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1192 transitions. [2023-09-01 08:22:07,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1192 transitions. [2023-09-01 08:22:07,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:22:07,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1192 transitions. [2023-09-01 08:22:07,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 397.3333333333333) internal successors, (1192), 3 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:07,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:07,676 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:07,678 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 129 flow. Second operand 3 states and 1192 transitions. [2023-09-01 08:22:07,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 91 transitions, 390 flow [2023-09-01 08:22:07,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 91 transitions, 372 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 08:22:07,692 INFO L231 Difference]: Finished difference. Result has 51 places, 56 transitions, 179 flow [2023-09-01 08:22:07,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=51, PETRI_TRANSITIONS=56} [2023-09-01 08:22:07,699 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2023-09-01 08:22:07,700 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 56 transitions, 179 flow [2023-09-01 08:22:07,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 361.6666666666667) internal successors, (1085), 3 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:07,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:22:07,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:22:07,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:22:07,703 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:22:07,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:22:07,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1829658, now seen corresponding path program 1 times [2023-09-01 08:22:07,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:22:07,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587393493] [2023-09-01 08:22:07,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:07,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:22:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:07,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:22:07,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:22:07,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587393493] [2023-09-01 08:22:07,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587393493] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:22:07,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:22:07,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:22:07,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061516279] [2023-09-01 08:22:07,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:22:07,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:22:07,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:22:07,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:22:07,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:22:07,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 884 [2023-09-01 08:22:07,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 56 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 362.0) internal successors, (1086), 3 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:07,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:22:07,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 884 [2023-09-01 08:22:07,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:22:08,114 INFO L130 PetriNetUnfolder]: 1157/1751 cut-off events. [2023-09-01 08:22:08,116 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-09-01 08:22:08,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3679 conditions, 1751 events. 1157/1751 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 9374 event pairs, 886 based on Foata normal form. 0/925 useless extension candidates. Maximal degree in co-relation 1814. Up to 1719 conditions per place. [2023-09-01 08:22:08,126 INFO L137 encePairwiseOnDemand]: 879/884 looper letters, 49 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-09-01 08:22:08,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 263 flow [2023-09-01 08:22:08,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:22:08,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:22:08,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1130 transitions. [2023-09-01 08:22:08,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42609351432880843 [2023-09-01 08:22:08,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1130 transitions. [2023-09-01 08:22:08,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1130 transitions. [2023-09-01 08:22:08,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:22:08,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1130 transitions. [2023-09-01 08:22:08,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 376.6666666666667) internal successors, (1130), 3 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:08,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:08,139 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:08,140 INFO L175 Difference]: Start difference. First operand has 51 places, 56 transitions, 179 flow. Second operand 3 states and 1130 transitions. [2023-09-01 08:22:08,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 263 flow [2023-09-01 08:22:08,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 247 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:22:08,142 INFO L231 Difference]: Finished difference. Result has 45 places, 52 transitions, 149 flow [2023-09-01 08:22:08,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=45, PETRI_TRANSITIONS=52} [2023-09-01 08:22:08,143 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -13 predicate places. [2023-09-01 08:22:08,144 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 52 transitions, 149 flow [2023-09-01 08:22:08,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 362.0) internal successors, (1086), 3 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:08,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:22:08,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:22:08,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 08:22:08,145 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:22:08,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:22:08,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1829685, now seen corresponding path program 1 times [2023-09-01 08:22:08,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:22:08,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513803639] [2023-09-01 08:22:08,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:08,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:22:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:08,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:22:08,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:22:08,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513803639] [2023-09-01 08:22:08,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513803639] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:22:08,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676713627] [2023-09-01 08:22:08,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:08,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:22:08,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:22:08,273 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:22:08,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:22:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:08,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:22:08,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:22:08,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:22:08,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:22:08,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:22:08,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676713627] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:22:08,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:22:08,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:22:08,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341416485] [2023-09-01 08:22:08,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:22:08,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:22:08,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:22:08,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:22:08,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:22:08,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 884 [2023-09-01 08:22:08,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 52 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 362.14285714285717) internal successors, (2535), 7 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:08,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:22:08,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 884 [2023-09-01 08:22:08,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:22:09,399 INFO L130 PetriNetUnfolder]: 2891/4370 cut-off events. [2023-09-01 08:22:09,399 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-09-01 08:22:09,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9150 conditions, 4370 events. 2891/4370 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 26309 event pairs, 2215 based on Foata normal form. 0/2301 useless extension candidates. Maximal degree in co-relation 9142. Up to 866 conditions per place. [2023-09-01 08:22:09,424 INFO L137 encePairwiseOnDemand]: 872/884 looper letters, 166 selfloop transitions, 29 changer transitions 0/197 dead transitions. [2023-09-01 08:22:09,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 197 transitions, 891 flow [2023-09-01 08:22:09,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:22:09,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:22:09,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2373 transitions. [2023-09-01 08:22:09,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473981900452489 [2023-09-01 08:22:09,431 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2373 transitions. [2023-09-01 08:22:09,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2373 transitions. [2023-09-01 08:22:09,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:22:09,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2373 transitions. [2023-09-01 08:22:09,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 395.5) internal successors, (2373), 6 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:09,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 884.0) internal successors, (6188), 7 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:09,449 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 884.0) internal successors, (6188), 7 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:09,449 INFO L175 Difference]: Start difference. First operand has 45 places, 52 transitions, 149 flow. Second operand 6 states and 2373 transitions. [2023-09-01 08:22:09,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 197 transitions, 891 flow [2023-09-01 08:22:09,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 197 transitions, 890 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:22:09,453 INFO L231 Difference]: Finished difference. Result has 52 places, 73 transitions, 355 flow [2023-09-01 08:22:09,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=355, PETRI_PLACES=52, PETRI_TRANSITIONS=73} [2023-09-01 08:22:09,454 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -6 predicate places. [2023-09-01 08:22:09,454 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 73 transitions, 355 flow [2023-09-01 08:22:09,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 362.14285714285717) internal successors, (2535), 7 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:09,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:22:09,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 08:22:09,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 08:22:09,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:22:09,663 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:22:09,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:22:09,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1760469380, now seen corresponding path program 1 times [2023-09-01 08:22:09,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:22:09,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195993798] [2023-09-01 08:22:09,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:09,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:22:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:09,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:22:09,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:22:09,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195993798] [2023-09-01 08:22:09,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195993798] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:22:09,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:22:09,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:22:09,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760266150] [2023-09-01 08:22:09,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:22:09,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:22:09,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:22:09,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:22:09,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:22:09,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 884 [2023-09-01 08:22:09,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 73 transitions, 355 flow. Second operand has 3 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:09,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:22:09,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 884 [2023-09-01 08:22:09,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:22:11,011 INFO L130 PetriNetUnfolder]: 5766/8696 cut-off events. [2023-09-01 08:22:11,012 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2023-09-01 08:22:11,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18265 conditions, 8696 events. 5766/8696 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 58640 event pairs, 4430 based on Foata normal form. 0/4592 useless extension candidates. Maximal degree in co-relation 18253. Up to 4291 conditions per place. [2023-09-01 08:22:11,071 INFO L137 encePairwiseOnDemand]: 880/884 looper letters, 108 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2023-09-01 08:22:11,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 112 transitions, 713 flow [2023-09-01 08:22:11,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:22:11,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:22:11,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1186 transitions. [2023-09-01 08:22:11,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44720965309200605 [2023-09-01 08:22:11,075 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1186 transitions. [2023-09-01 08:22:11,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1186 transitions. [2023-09-01 08:22:11,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:22:11,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1186 transitions. [2023-09-01 08:22:11,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 395.3333333333333) internal successors, (1186), 3 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:11,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:11,084 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:11,084 INFO L175 Difference]: Start difference. First operand has 52 places, 73 transitions, 355 flow. Second operand 3 states and 1186 transitions. [2023-09-01 08:22:11,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 112 transitions, 713 flow [2023-09-01 08:22:11,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 112 transitions, 661 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-09-01 08:22:11,090 INFO L231 Difference]: Finished difference. Result has 54 places, 74 transitions, 328 flow [2023-09-01 08:22:11,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=54, PETRI_TRANSITIONS=74} [2023-09-01 08:22:11,092 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -4 predicate places. [2023-09-01 08:22:11,092 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 74 transitions, 328 flow [2023-09-01 08:22:11,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:11,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:22:11,093 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:22:11,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 08:22:11,093 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:22:11,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:22:11,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1324671403, now seen corresponding path program 2 times [2023-09-01 08:22:11,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:22:11,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711587529] [2023-09-01 08:22:11,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:11,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:22:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:11,223 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:22:11,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:22:11,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711587529] [2023-09-01 08:22:11,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711587529] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:22:11,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222949749] [2023-09-01 08:22:11,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:22:11,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:22:11,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:22:11,225 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:22:11,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:22:11,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:22:11,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:22:11,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:22:11,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:22:11,349 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:22:11,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:22:11,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222949749] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:22:11,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:22:11,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:22:11,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691676477] [2023-09-01 08:22:11,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:22:11,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:22:11,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:22:11,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:22:11,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:22:11,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 884 [2023-09-01 08:22:11,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 74 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 366.0) internal successors, (1098), 3 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:11,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:22:11,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 884 [2023-09-01 08:22:11,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:22:12,579 INFO L130 PetriNetUnfolder]: 5766/8695 cut-off events. [2023-09-01 08:22:12,579 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2023-09-01 08:22:12,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18259 conditions, 8695 events. 5766/8695 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 58564 event pairs, 4430 based on Foata normal form. 1/4604 useless extension candidates. Maximal degree in co-relation 18246. Up to 8530 conditions per place. [2023-09-01 08:22:12,629 INFO L137 encePairwiseOnDemand]: 881/884 looper letters, 65 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2023-09-01 08:22:12,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 73 transitions, 460 flow [2023-09-01 08:22:12,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:22:12,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:22:12,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1138 transitions. [2023-09-01 08:22:12,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4291101055806938 [2023-09-01 08:22:12,633 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1138 transitions. [2023-09-01 08:22:12,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1138 transitions. [2023-09-01 08:22:12,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:22:12,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1138 transitions. [2023-09-01 08:22:12,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 379.3333333333333) internal successors, (1138), 3 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:12,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:12,642 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:12,643 INFO L175 Difference]: Start difference. First operand has 54 places, 74 transitions, 328 flow. Second operand 3 states and 1138 transitions. [2023-09-01 08:22:12,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 73 transitions, 460 flow [2023-09-01 08:22:12,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 73 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:22:12,646 INFO L231 Difference]: Finished difference. Result has 54 places, 73 transitions, 328 flow [2023-09-01 08:22:12,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=54, PETRI_TRANSITIONS=73} [2023-09-01 08:22:12,647 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -4 predicate places. [2023-09-01 08:22:12,647 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 73 transitions, 328 flow [2023-09-01 08:22:12,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 366.0) internal successors, (1098), 3 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:12,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:22:12,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:22:12,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 08:22:12,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:22:12,853 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:22:12,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:22:12,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1260018834, now seen corresponding path program 1 times [2023-09-01 08:22:12,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:22:12,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882311222] [2023-09-01 08:22:12,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:12,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:22:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:13,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:22:13,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:22:13,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882311222] [2023-09-01 08:22:13,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882311222] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:22:13,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:22:13,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 08:22:13,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301107655] [2023-09-01 08:22:13,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:22:13,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:22:13,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:22:13,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:22:13,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:22:13,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 884 [2023-09-01 08:22:13,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 73 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 352.2) internal successors, (1761), 5 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:13,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:22:13,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 884 [2023-09-01 08:22:13,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:22:14,488 INFO L130 PetriNetUnfolder]: 8191/12577 cut-off events. [2023-09-01 08:22:14,488 INFO L131 PetriNetUnfolder]: For 108/108 co-relation queries the response was YES. [2023-09-01 08:22:14,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26430 conditions, 12577 events. 8191/12577 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 1215. Compared 92111 event pairs, 6645 based on Foata normal form. 5/6901 useless extension candidates. Maximal degree in co-relation 26416. Up to 8530 conditions per place. [2023-09-01 08:22:14,550 INFO L137 encePairwiseOnDemand]: 878/884 looper letters, 107 selfloop transitions, 8 changer transitions 0/117 dead transitions. [2023-09-01 08:22:14,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 117 transitions, 724 flow [2023-09-01 08:22:14,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:22:14,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:22:14,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1833 transitions. [2023-09-01 08:22:14,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147058823529412 [2023-09-01 08:22:14,557 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1833 transitions. [2023-09-01 08:22:14,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1833 transitions. [2023-09-01 08:22:14,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:22:14,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1833 transitions. [2023-09-01 08:22:14,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 366.6) internal successors, (1833), 5 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:14,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 884.0) internal successors, (5304), 6 states have internal predecessors, (5304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:14,569 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 884.0) internal successors, (5304), 6 states have internal predecessors, (5304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:14,569 INFO L175 Difference]: Start difference. First operand has 54 places, 73 transitions, 328 flow. Second operand 5 states and 1833 transitions. [2023-09-01 08:22:14,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 117 transitions, 724 flow [2023-09-01 08:22:14,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 117 transitions, 712 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:22:14,573 INFO L231 Difference]: Finished difference. Result has 58 places, 74 transitions, 345 flow [2023-09-01 08:22:14,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=58, PETRI_TRANSITIONS=74} [2023-09-01 08:22:14,576 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 0 predicate places. [2023-09-01 08:22:14,577 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 74 transitions, 345 flow [2023-09-01 08:22:14,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 352.2) internal successors, (1761), 5 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:14,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:22:14,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:22:14,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 08:22:14,578 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:22:14,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:22:14,578 INFO L85 PathProgramCache]: Analyzing trace with hash -449464877, now seen corresponding path program 1 times [2023-09-01 08:22:14,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:22:14,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321113386] [2023-09-01 08:22:14,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:14,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:22:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:14,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:22:14,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:22:14,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321113386] [2023-09-01 08:22:14,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321113386] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:22:14,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31329165] [2023-09-01 08:22:14,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:14,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:22:14,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:22:14,657 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:22:14,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 08:22:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:14,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:22:14,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:22:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:22:14,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:22:14,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31329165] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:22:14,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:22:14,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 08:22:14,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076186173] [2023-09-01 08:22:14,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:22:14,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:22:14,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:22:14,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:22:14,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:22:14,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 884 [2023-09-01 08:22:14,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 74 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 371.75) internal successors, (1487), 4 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:14,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:22:14,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 884 [2023-09-01 08:22:14,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:22:16,123 INFO L130 PetriNetUnfolder]: 8191/12572 cut-off events. [2023-09-01 08:22:16,123 INFO L131 PetriNetUnfolder]: For 626/626 co-relation queries the response was YES. [2023-09-01 08:22:16,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27338 conditions, 12572 events. 8191/12572 cut-off events. For 626/626 co-relation queries the response was YES. Maximal size of possible extension queue 1154. Compared 91253 event pairs, 6645 based on Foata normal form. 0/7796 useless extension candidates. Maximal degree in co-relation 27323. Up to 8042 conditions per place. [2023-09-01 08:22:16,203 INFO L137 encePairwiseOnDemand]: 881/884 looper letters, 106 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2023-09-01 08:22:16,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 111 transitions, 686 flow [2023-09-01 08:22:16,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:22:16,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:22:16,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1553 transitions. [2023-09-01 08:22:16,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391968325791855 [2023-09-01 08:22:16,208 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1553 transitions. [2023-09-01 08:22:16,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1553 transitions. [2023-09-01 08:22:16,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:22:16,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1553 transitions. [2023-09-01 08:22:16,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 388.25) internal successors, (1553), 4 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:16,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 884.0) internal successors, (4420), 5 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:16,218 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 884.0) internal successors, (4420), 5 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:16,219 INFO L175 Difference]: Start difference. First operand has 58 places, 74 transitions, 345 flow. Second operand 4 states and 1553 transitions. [2023-09-01 08:22:16,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 111 transitions, 686 flow [2023-09-01 08:22:16,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 111 transitions, 676 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 08:22:16,223 INFO L231 Difference]: Finished difference. Result has 59 places, 73 transitions, 337 flow [2023-09-01 08:22:16,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=337, PETRI_PLACES=59, PETRI_TRANSITIONS=73} [2023-09-01 08:22:16,224 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2023-09-01 08:22:16,224 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 73 transitions, 337 flow [2023-09-01 08:22:16,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 371.75) internal successors, (1487), 4 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:16,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:22:16,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:22:16,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 08:22:16,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:22:16,431 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:22:16,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:22:16,431 INFO L85 PathProgramCache]: Analyzing trace with hash -405848169, now seen corresponding path program 1 times [2023-09-01 08:22:16,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:22:16,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033733083] [2023-09-01 08:22:16,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:16,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:22:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:16,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:22:16,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:22:16,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033733083] [2023-09-01 08:22:16,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033733083] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:22:16,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:22:16,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:22:16,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208115132] [2023-09-01 08:22:16,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:22:16,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:22:16,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:22:16,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:22:16,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:22:16,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 884 [2023-09-01 08:22:16,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 73 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 372.3333333333333) internal successors, (1117), 3 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:16,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:22:16,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 884 [2023-09-01 08:22:16,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:22:18,580 INFO L130 PetriNetUnfolder]: 16351/25040 cut-off events. [2023-09-01 08:22:18,581 INFO L131 PetriNetUnfolder]: For 1245/1245 co-relation queries the response was YES. [2023-09-01 08:22:18,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54347 conditions, 25040 events. 16351/25040 cut-off events. For 1245/1245 co-relation queries the response was YES. Maximal size of possible extension queue 2128. Compared 197566 event pairs, 13290 based on Foata normal form. 0/15523 useless extension candidates. Maximal degree in co-relation 54332. Up to 12333 conditions per place. [2023-09-01 08:22:18,715 INFO L137 encePairwiseOnDemand]: 880/884 looper letters, 104 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2023-09-01 08:22:18,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 108 transitions, 670 flow [2023-09-01 08:22:18,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:22:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:22:18,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1180 transitions. [2023-09-01 08:22:18,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.444947209653092 [2023-09-01 08:22:18,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1180 transitions. [2023-09-01 08:22:18,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1180 transitions. [2023-09-01 08:22:18,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:22:18,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1180 transitions. [2023-09-01 08:22:18,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 393.3333333333333) internal successors, (1180), 3 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:18,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:18,727 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:18,727 INFO L175 Difference]: Start difference. First operand has 59 places, 73 transitions, 337 flow. Second operand 3 states and 1180 transitions. [2023-09-01 08:22:18,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 108 transitions, 670 flow [2023-09-01 08:22:18,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 108 transitions, 665 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:22:18,734 INFO L231 Difference]: Finished difference. Result has 60 places, 74 transitions, 346 flow [2023-09-01 08:22:18,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=60, PETRI_TRANSITIONS=74} [2023-09-01 08:22:18,737 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-09-01 08:22:18,737 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 74 transitions, 346 flow [2023-09-01 08:22:18,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 372.3333333333333) internal successors, (1117), 3 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:18,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:22:18,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:22:18,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 08:22:18,738 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:22:18,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:22:18,738 INFO L85 PathProgramCache]: Analyzing trace with hash -449464820, now seen corresponding path program 1 times [2023-09-01 08:22:18,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:22:18,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876306026] [2023-09-01 08:22:18,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:18,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:22:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:18,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:22:18,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:22:18,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876306026] [2023-09-01 08:22:18,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876306026] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:22:18,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958151712] [2023-09-01 08:22:18,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:18,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:22:18,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:22:18,831 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:22:18,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 08:22:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:18,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 08:22:18,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:22:19,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:22:19,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:22:19,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:22:19,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958151712] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:22:19,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:22:19,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 12 [2023-09-01 08:22:19,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739133330] [2023-09-01 08:22:19,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:22:19,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:22:19,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:22:19,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:22:19,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:22:19,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 884 [2023-09-01 08:22:19,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 74 transitions, 346 flow. Second operand has 13 states, 13 states have (on average 342.46153846153845) internal successors, (4452), 13 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:19,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:22:19,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 884 [2023-09-01 08:22:19,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:22:24,735 INFO L130 PetriNetUnfolder]: 33586/50942 cut-off events. [2023-09-01 08:22:24,735 INFO L131 PetriNetUnfolder]: For 2951/2951 co-relation queries the response was YES. [2023-09-01 08:22:24,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111388 conditions, 50942 events. 33586/50942 cut-off events. For 2951/2951 co-relation queries the response was YES. Maximal size of possible extension queue 3848. Compared 426134 event pairs, 26580 based on Foata normal form. 5/31920 useless extension candidates. Maximal degree in co-relation 111372. Up to 14528 conditions per place. [2023-09-01 08:22:25,004 INFO L137 encePairwiseOnDemand]: 872/884 looper letters, 258 selfloop transitions, 31 changer transitions 0/291 dead transitions. [2023-09-01 08:22:25,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 291 transitions, 1690 flow [2023-09-01 08:22:25,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-09-01 08:22:25,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-09-01 08:22:25,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 7728 transitions. [2023-09-01 08:22:25,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3973673385438091 [2023-09-01 08:22:25,029 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 7728 transitions. [2023-09-01 08:22:25,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 7728 transitions. [2023-09-01 08:22:25,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:22:25,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 7728 transitions. [2023-09-01 08:22:25,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 351.27272727272725) internal successors, (7728), 22 states have internal predecessors, (7728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:25,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 884.0) internal successors, (20332), 23 states have internal predecessors, (20332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:25,077 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 884.0) internal successors, (20332), 23 states have internal predecessors, (20332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:25,077 INFO L175 Difference]: Start difference. First operand has 60 places, 74 transitions, 346 flow. Second operand 22 states and 7728 transitions. [2023-09-01 08:22:25,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 291 transitions, 1690 flow [2023-09-01 08:22:25,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 291 transitions, 1678 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:22:25,087 INFO L231 Difference]: Finished difference. Result has 87 places, 94 transitions, 586 flow [2023-09-01 08:22:25,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=586, PETRI_PLACES=87, PETRI_TRANSITIONS=94} [2023-09-01 08:22:25,089 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 29 predicate places. [2023-09-01 08:22:25,089 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 94 transitions, 586 flow [2023-09-01 08:22:25,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 342.46153846153845) internal successors, (4452), 13 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:25,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:22:25,091 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 08:22:25,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 08:22:25,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:22:25,296 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:22:25,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:22:25,296 INFO L85 PathProgramCache]: Analyzing trace with hash -450917824, now seen corresponding path program 1 times [2023-09-01 08:22:25,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:22:25,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956950544] [2023-09-01 08:22:25,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:25,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:22:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:25,378 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:22:25,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:22:25,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956950544] [2023-09-01 08:22:25,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956950544] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:22:25,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312915779] [2023-09-01 08:22:25,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:25,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:22:25,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:22:25,381 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:22:25,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 08:22:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:25,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:22:25,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:22:25,537 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:22:25,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:22:25,590 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:22:25,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312915779] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:22:25,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:22:25,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 08:22:25,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377815067] [2023-09-01 08:22:25,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:22:25,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:22:25,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:22:25,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:22:25,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:22:25,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 884 [2023-09-01 08:22:25,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 94 transitions, 586 flow. Second operand has 13 states, 13 states have (on average 362.15384615384613) internal successors, (4708), 13 states have internal predecessors, (4708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:25,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:22:25,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 884 [2023-09-01 08:22:25,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:22:38,094 INFO L130 PetriNetUnfolder]: 73888/112052 cut-off events. [2023-09-01 08:22:38,094 INFO L131 PetriNetUnfolder]: For 7142/7142 co-relation queries the response was YES. [2023-09-01 08:22:38,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245110 conditions, 112052 events. 73888/112052 cut-off events. For 7142/7142 co-relation queries the response was YES. Maximal size of possible extension queue 5606. Compared 996784 event pairs, 58476 based on Foata normal form. 96/70286 useless extension candidates. Maximal degree in co-relation 245088. Up to 15180 conditions per place. [2023-09-01 08:22:38,825 INFO L137 encePairwiseOnDemand]: 873/884 looper letters, 458 selfloop transitions, 74 changer transitions 0/534 dead transitions. [2023-09-01 08:22:38,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 534 transitions, 3608 flow [2023-09-01 08:22:38,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:22:38,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:22:38,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4761 transitions. [2023-09-01 08:22:38,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44881221719457015 [2023-09-01 08:22:38,836 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4761 transitions. [2023-09-01 08:22:38,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4761 transitions. [2023-09-01 08:22:38,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:22:38,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4761 transitions. [2023-09-01 08:22:38,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 396.75) internal successors, (4761), 12 states have internal predecessors, (4761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:38,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 884.0) internal successors, (11492), 13 states have internal predecessors, (11492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:38,861 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 884.0) internal successors, (11492), 13 states have internal predecessors, (11492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:38,861 INFO L175 Difference]: Start difference. First operand has 87 places, 94 transitions, 586 flow. Second operand 12 states and 4761 transitions. [2023-09-01 08:22:38,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 534 transitions, 3608 flow [2023-09-01 08:22:38,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 534 transitions, 3400 flow, removed 70 selfloop flow, removed 2 redundant places. [2023-09-01 08:22:38,917 INFO L231 Difference]: Finished difference. Result has 102 places, 136 transitions, 1122 flow [2023-09-01 08:22:38,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1122, PETRI_PLACES=102, PETRI_TRANSITIONS=136} [2023-09-01 08:22:38,917 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 44 predicate places. [2023-09-01 08:22:38,918 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 136 transitions, 1122 flow [2023-09-01 08:22:38,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 362.15384615384613) internal successors, (4708), 13 states have internal predecessors, (4708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:38,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:22:38,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:22:38,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 08:22:39,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-09-01 08:22:39,129 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:22:39,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:22:39,130 INFO L85 PathProgramCache]: Analyzing trace with hash 303446711, now seen corresponding path program 1 times [2023-09-01 08:22:39,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:22:39,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699354325] [2023-09-01 08:22:39,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:39,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:22:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:39,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:22:39,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:22:39,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699354325] [2023-09-01 08:22:39,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699354325] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:22:39,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:22:39,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:22:39,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728609031] [2023-09-01 08:22:39,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:22:39,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:22:39,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:22:39,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:22:39,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:22:39,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 884 [2023-09-01 08:22:39,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 136 transitions, 1122 flow. Second operand has 3 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 3 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:39,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:22:39,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 884 [2023-09-01 08:22:39,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:22:58,185 INFO L130 PetriNetUnfolder]: 114104/166524 cut-off events. [2023-09-01 08:22:58,186 INFO L131 PetriNetUnfolder]: For 13752/13752 co-relation queries the response was YES. [2023-09-01 08:22:59,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354645 conditions, 166524 events. 114104/166524 cut-off events. For 13752/13752 co-relation queries the response was YES. Maximal size of possible extension queue 7200. Compared 1359165 event pairs, 34188 based on Foata normal form. 0/98531 useless extension candidates. Maximal degree in co-relation 354615. Up to 138205 conditions per place. [2023-09-01 08:22:59,700 INFO L137 encePairwiseOnDemand]: 877/884 looper letters, 143 selfloop transitions, 2 changer transitions 3/150 dead transitions. [2023-09-01 08:22:59,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 150 transitions, 1452 flow [2023-09-01 08:22:59,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:22:59,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:22:59,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1176 transitions. [2023-09-01 08:22:59,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434389140271493 [2023-09-01 08:22:59,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1176 transitions. [2023-09-01 08:22:59,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1176 transitions. [2023-09-01 08:22:59,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:22:59,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1176 transitions. [2023-09-01 08:22:59,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:59,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:59,712 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:59,712 INFO L175 Difference]: Start difference. First operand has 102 places, 136 transitions, 1122 flow. Second operand 3 states and 1176 transitions. [2023-09-01 08:22:59,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 150 transitions, 1452 flow [2023-09-01 08:22:59,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 150 transitions, 1248 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-09-01 08:22:59,910 INFO L231 Difference]: Finished difference. Result has 100 places, 137 transitions, 938 flow [2023-09-01 08:22:59,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=938, PETRI_PLACES=100, PETRI_TRANSITIONS=137} [2023-09-01 08:22:59,911 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 42 predicate places. [2023-09-01 08:22:59,911 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 137 transitions, 938 flow [2023-09-01 08:22:59,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 3 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:59,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:22:59,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:22:59,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 08:22:59,912 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:22:59,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:22:59,913 INFO L85 PathProgramCache]: Analyzing trace with hash 303446704, now seen corresponding path program 1 times [2023-09-01 08:22:59,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:22:59,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668061356] [2023-09-01 08:22:59,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:22:59,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:22:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:22:59,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:22:59,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:22:59,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668061356] [2023-09-01 08:22:59,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668061356] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:22:59,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:22:59,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:22:59,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80674449] [2023-09-01 08:22:59,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:22:59,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:22:59,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:22:59,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:22:59,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:22:59,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 884 [2023-09-01 08:22:59,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 137 transitions, 938 flow. Second operand has 3 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:22:59,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:22:59,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 884 [2023-09-01 08:22:59,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:23:12,768 INFO L130 PetriNetUnfolder]: 75340/115484 cut-off events. [2023-09-01 08:23:12,769 INFO L131 PetriNetUnfolder]: For 18611/18611 co-relation queries the response was YES. [2023-09-01 08:23:13,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289009 conditions, 115484 events. 75340/115484 cut-off events. For 18611/18611 co-relation queries the response was YES. Maximal size of possible extension queue 5679. Compared 1051329 event pairs, 60060 based on Foata normal form. 0/88412 useless extension candidates. Maximal degree in co-relation 288978. Up to 114560 conditions per place. [2023-09-01 08:23:13,926 INFO L137 encePairwiseOnDemand]: 882/884 looper letters, 133 selfloop transitions, 1 changer transitions 0/136 dead transitions. [2023-09-01 08:23:13,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 136 transitions, 1204 flow [2023-09-01 08:23:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:23:13,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:23:13,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1148 transitions. [2023-09-01 08:23:13,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43288084464555054 [2023-09-01 08:23:13,929 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1148 transitions. [2023-09-01 08:23:13,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1148 transitions. [2023-09-01 08:23:13,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:23:13,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1148 transitions. [2023-09-01 08:23:13,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 382.6666666666667) internal successors, (1148), 3 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:23:13,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:23:13,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:23:13,935 INFO L175 Difference]: Start difference. First operand has 100 places, 137 transitions, 938 flow. Second operand 3 states and 1148 transitions. [2023-09-01 08:23:13,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 136 transitions, 1204 flow [2023-09-01 08:23:14,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 136 transitions, 1202 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:23:14,048 INFO L231 Difference]: Finished difference. Result has 100 places, 136 transitions, 936 flow [2023-09-01 08:23:14,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=936, PETRI_PLACES=100, PETRI_TRANSITIONS=136} [2023-09-01 08:23:14,049 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 42 predicate places. [2023-09-01 08:23:14,049 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 136 transitions, 936 flow [2023-09-01 08:23:14,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:23:14,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:23:14,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:23:14,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 08:23:14,050 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:23:14,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:23:14,050 INFO L85 PathProgramCache]: Analyzing trace with hash 303446705, now seen corresponding path program 1 times [2023-09-01 08:23:14,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:23:14,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852161756] [2023-09-01 08:23:14,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:23:14,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:23:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:23:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:23:14,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:23:14,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852161756] [2023-09-01 08:23:14,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852161756] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:23:14,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:23:14,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:23:14,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899839857] [2023-09-01 08:23:14,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:23:14,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:23:14,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:23:14,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:23:14,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:23:14,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 884 [2023-09-01 08:23:14,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 136 transitions, 936 flow. Second operand has 3 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:23:14,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:23:14,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 884 [2023-09-01 08:23:14,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:23:28,924 INFO L130 PetriNetUnfolder]: 89948/132072 cut-off events. [2023-09-01 08:23:28,924 INFO L131 PetriNetUnfolder]: For 23913/24837 co-relation queries the response was YES. [2023-09-01 08:23:29,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327554 conditions, 132072 events. 89948/132072 cut-off events. For 23913/24837 co-relation queries the response was YES. Maximal size of possible extension queue 5565. Compared 1084598 event pairs, 25740 based on Foata normal form. 132/101172 useless extension candidates. Maximal degree in co-relation 327522. Up to 90553 conditions per place. [2023-09-01 08:23:29,919 INFO L137 encePairwiseOnDemand]: 877/884 looper letters, 139 selfloop transitions, 4 changer transitions 3/148 dead transitions. [2023-09-01 08:23:29,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 148 transitions, 1260 flow [2023-09-01 08:23:29,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:23:29,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:23:29,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1163 transitions. [2023-09-01 08:23:29,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4385369532428356 [2023-09-01 08:23:29,921 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1163 transitions. [2023-09-01 08:23:29,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1163 transitions. [2023-09-01 08:23:29,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:23:29,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1163 transitions. [2023-09-01 08:23:29,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 387.6666666666667) internal successors, (1163), 3 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:23:29,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:23:29,926 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:23:29,926 INFO L175 Difference]: Start difference. First operand has 100 places, 136 transitions, 936 flow. Second operand 3 states and 1163 transitions. [2023-09-01 08:23:29,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 148 transitions, 1260 flow [2023-09-01 08:23:29,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 148 transitions, 1259 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:23:29,984 INFO L231 Difference]: Finished difference. Result has 102 places, 136 transitions, 953 flow [2023-09-01 08:23:29,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=953, PETRI_PLACES=102, PETRI_TRANSITIONS=136} [2023-09-01 08:23:29,985 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 44 predicate places. [2023-09-01 08:23:29,985 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 136 transitions, 953 flow [2023-09-01 08:23:29,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:23:29,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:23:29,986 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:23:29,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 08:23:29,986 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:23:29,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:23:29,986 INFO L85 PathProgramCache]: Analyzing trace with hash 821990299, now seen corresponding path program 1 times [2023-09-01 08:23:29,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:23:29,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977200515] [2023-09-01 08:23:29,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:23:29,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:23:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:23:30,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:23:30,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:23:30,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977200515] [2023-09-01 08:23:30,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977200515] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:23:30,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:23:30,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:23:30,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517862084] [2023-09-01 08:23:30,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:23:30,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:23:30,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:23:30,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:23:30,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:23:30,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 884 [2023-09-01 08:23:30,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 136 transitions, 953 flow. Second operand has 3 states, 3 states have (on average 373.0) internal successors, (1119), 3 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:23:30,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:23:30,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 884 [2023-09-01 08:23:30,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:23:41,889 INFO L130 PetriNetUnfolder]: 69092/107190 cut-off events. [2023-09-01 08:23:41,890 INFO L131 PetriNetUnfolder]: For 60763/60763 co-relation queries the response was YES. [2023-09-01 08:23:42,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291718 conditions, 107190 events. 69092/107190 cut-off events. For 60763/60763 co-relation queries the response was YES. Maximal size of possible extension queue 5182. Compared 976053 event pairs, 54252 based on Foata normal form. 0/98004 useless extension candidates. Maximal degree in co-relation 291684. Up to 106228 conditions per place. [2023-09-01 08:23:42,792 INFO L137 encePairwiseOnDemand]: 882/884 looper letters, 126 selfloop transitions, 7 changer transitions 0/135 dead transitions. [2023-09-01 08:23:42,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 135 transitions, 1215 flow [2023-09-01 08:23:42,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:23:42,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:23:42,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1150 transitions. [2023-09-01 08:23:42,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336349924585219 [2023-09-01 08:23:42,794 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1150 transitions. [2023-09-01 08:23:42,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1150 transitions. [2023-09-01 08:23:42,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:23:42,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1150 transitions. [2023-09-01 08:23:42,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 383.3333333333333) internal successors, (1150), 3 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:23:42,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:23:42,798 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:23:42,798 INFO L175 Difference]: Start difference. First operand has 102 places, 136 transitions, 953 flow. Second operand 3 states and 1150 transitions. [2023-09-01 08:23:42,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 135 transitions, 1215 flow [2023-09-01 08:23:42,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 135 transitions, 1207 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:23:42,904 INFO L231 Difference]: Finished difference. Result has 101 places, 135 transitions, 955 flow [2023-09-01 08:23:42,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=955, PETRI_PLACES=101, PETRI_TRANSITIONS=135} [2023-09-01 08:23:42,905 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 43 predicate places. [2023-09-01 08:23:42,905 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 135 transitions, 955 flow [2023-09-01 08:23:42,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 373.0) internal successors, (1119), 3 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:23:42,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:23:42,905 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:23:42,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 08:23:42,905 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:23:42,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:23:42,906 INFO L85 PathProgramCache]: Analyzing trace with hash 821990301, now seen corresponding path program 1 times [2023-09-01 08:23:42,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:23:42,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142369284] [2023-09-01 08:23:42,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:23:42,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:23:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:23:42,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:23:42,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:23:42,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142369284] [2023-09-01 08:23:42,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142369284] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:23:42,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485166891] [2023-09-01 08:23:42,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:23:42,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:23:42,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:23:42,994 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:23:42,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 08:23:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:23:43,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:23:43,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:23:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:23:43,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:23:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:23:43,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485166891] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:23:43,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:23:43,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 08:23:43,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580094234] [2023-09-01 08:23:43,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:23:43,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:23:43,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:23:43,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:23:43,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:23:43,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 884 [2023-09-01 08:23:43,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 135 transitions, 955 flow. Second operand has 7 states, 7 states have (on average 372.42857142857144) internal successors, (2607), 7 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:23:43,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:23:43,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 884 [2023-09-01 08:23:43,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:24:13,321 INFO L130 PetriNetUnfolder]: 172580/267522 cut-off events. [2023-09-01 08:24:13,321 INFO L131 PetriNetUnfolder]: For 113156/113156 co-relation queries the response was YES. [2023-09-01 08:24:14,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 701679 conditions, 267522 events. 172580/267522 cut-off events. For 113156/113156 co-relation queries the response was YES. Maximal size of possible extension queue 11209. Compared 2638869 event pairs, 135630 based on Foata normal form. 0/245466 useless extension candidates. Maximal degree in co-relation 701646. Up to 73921 conditions per place. [2023-09-01 08:24:15,825 INFO L137 encePairwiseOnDemand]: 881/884 looper letters, 325 selfloop transitions, 11 changer transitions 0/338 dead transitions. [2023-09-01 08:24:15,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 338 transitions, 2951 flow [2023-09-01 08:24:15,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:24:15,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:24:15,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2366 transitions. [2023-09-01 08:24:15,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44607843137254904 [2023-09-01 08:24:15,829 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2366 transitions. [2023-09-01 08:24:15,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2366 transitions. [2023-09-01 08:24:15,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:24:15,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2366 transitions. [2023-09-01 08:24:15,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 394.3333333333333) internal successors, (2366), 6 states have internal predecessors, (2366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:24:15,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 884.0) internal successors, (6188), 7 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:24:15,837 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 884.0) internal successors, (6188), 7 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:24:15,837 INFO L175 Difference]: Start difference. First operand has 101 places, 135 transitions, 955 flow. Second operand 6 states and 2366 transitions. [2023-09-01 08:24:15,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 338 transitions, 2951 flow [2023-09-01 08:24:16,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 338 transitions, 2944 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:24:16,722 INFO L231 Difference]: Finished difference. Result has 108 places, 138 transitions, 996 flow [2023-09-01 08:24:16,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=996, PETRI_PLACES=108, PETRI_TRANSITIONS=138} [2023-09-01 08:24:16,723 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 50 predicate places. [2023-09-01 08:24:16,723 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 138 transitions, 996 flow [2023-09-01 08:24:16,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 372.42857142857144) internal successors, (2607), 7 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:24:16,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:24:16,723 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-09-01 08:24:16,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 08:24:16,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 08:24:16,930 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-09-01 08:24:16,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:24:16,931 INFO L85 PathProgramCache]: Analyzing trace with hash 504768093, now seen corresponding path program 2 times [2023-09-01 08:24:16,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:24:16,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946917538] [2023-09-01 08:24:16,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:24:16,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:24:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:24:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:24:17,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:24:17,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946917538] [2023-09-01 08:24:17,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946917538] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:24:17,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903534945] [2023-09-01 08:24:17,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:24:17,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:24:17,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:24:17,025 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:24:17,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 08:24:17,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:24:17,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:24:17,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:24:17,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:24:17,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:24:17,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:24:17,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903534945] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:24:17,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:24:17,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-09-01 08:24:17,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910747354] [2023-09-01 08:24:17,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:24:17,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:24:17,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:24:17,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:24:17,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:24:17,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 884 [2023-09-01 08:24:17,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 138 transitions, 996 flow. Second operand has 4 states, 4 states have (on average 370.75) internal successors, (1483), 4 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:24:17,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:24:17,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 884 [2023-09-01 08:24:17,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand