./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-three-array-min.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-three-array-min.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 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 --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 08:34:40,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:34:40,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:34:40,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:34:40,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:34:40,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:34:40,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:34:40,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:34:40,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:34:40,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:34:40,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:34:40,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:34:40,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:34:40,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:34:40,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:34:40,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:34:40,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:34:40,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:34:40,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:34:40,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:34:40,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:34:40,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:34:40,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:34:40,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:34:40,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:34:40,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:34:40,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:34:40,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:34:40,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:34:40,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:34:40,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:34:40,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:34:40,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:34:40,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:34:40,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:34:40,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:34:40,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:34:40,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:34:40,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:34:40,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:34:40,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:34:40,222 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:34:40,252 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:34:40,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:34:40,253 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:34:40,253 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:34:40,254 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:34:40,254 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:34:40,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:34:40,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:34:40,255 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:34:40,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:34:40,256 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:34:40,256 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:34:40,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:34:40,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:34:40,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:34:40,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:34:40,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:34:40,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:34:40,257 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:34:40,257 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:34:40,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:34:40,258 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:34:40,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:34:40,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:34:40,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:34:40,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:34:40,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:34:40,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:34:40,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:34:40,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:34:40,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:34:40,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:34:40,260 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:34:40,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:34:40,260 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:34:40,260 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:34:40,261 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:34:40,261 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:34:40,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:34:40,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:34:40,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:34:40,614 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:34:40,614 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:34:40,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c [2023-09-01 08:34:41,857 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:34:42,097 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:34:42,098 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c [2023-09-01 08:34:42,104 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46bdfae88/737b3aff286f4fcaa91de09d551ec081/FLAGf2febce2c [2023-09-01 08:34:42,118 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46bdfae88/737b3aff286f4fcaa91de09d551ec081 [2023-09-01 08:34:42,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:34:42,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:34:42,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:34:42,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:34:42,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:34:42,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:34:42" (1/1) ... [2023-09-01 08:34:42,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f745ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:42, skipping insertion in model container [2023-09-01 08:34:42,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:34:42" (1/1) ... [2023-09-01 08:34:42,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:34:42,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:34:42,322 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-three-array-min.wvr.c[2815,2828] [2023-09-01 08:34:42,329 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:34:42,337 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:34:42,357 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-three-array-min.wvr.c[2815,2828] [2023-09-01 08:34:42,362 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:34:42,369 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:34:42,370 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:34:42,375 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:34:42,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:42 WrapperNode [2023-09-01 08:34:42,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:34:42,377 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:34:42,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:34:42,378 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:34:42,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:42" (1/1) ... [2023-09-01 08:34:42,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:42" (1/1) ... [2023-09-01 08:34:42,420 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 288 [2023-09-01 08:34:42,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:34:42,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:34:42,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:34:42,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:34:42,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:42" (1/1) ... [2023-09-01 08:34:42,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:42" (1/1) ... [2023-09-01 08:34:42,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:42" (1/1) ... [2023-09-01 08:34:42,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:42" (1/1) ... [2023-09-01 08:34:42,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:42" (1/1) ... [2023-09-01 08:34:42,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:42" (1/1) ... [2023-09-01 08:34:42,463 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:42" (1/1) ... [2023-09-01 08:34:42,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:42" (1/1) ... [2023-09-01 08:34:42,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:34:42,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:34:42,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:34:42,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:34:42,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:42" (1/1) ... [2023-09-01 08:34:42,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:34:42,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:34:42,506 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 08:34:42,534 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 08:34:42,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:34:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:34:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:34:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:34:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:34:42,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:34:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:34:42,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:34:42,551 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:34:42,551 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:34:42,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:34:42,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:34:42,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:34:42,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:34:42,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:34:42,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:34:42,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:34:42,553 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 08:34:42,734 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:34:42,735 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:34:43,256 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:34:43,553 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:34:43,554 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-09-01 08:34:43,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:34:43 BoogieIcfgContainer [2023-09-01 08:34:43,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:34:43,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:34:43,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:34:43,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:34:43,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:34:42" (1/3) ... [2023-09-01 08:34:43,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe5df89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:34:43, skipping insertion in model container [2023-09-01 08:34:43,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:42" (2/3) ... [2023-09-01 08:34:43,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe5df89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:34:43, skipping insertion in model container [2023-09-01 08:34:43,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:34:43" (3/3) ... [2023-09-01 08:34:43,566 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2023-09-01 08:34:43,573 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:34:43,581 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:34:43,582 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-09-01 08:34:43,582 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:34:43,716 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 08:34:43,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 338 places, 359 transitions, 742 flow [2023-09-01 08:34:43,904 INFO L130 PetriNetUnfolder]: 31/356 cut-off events. [2023-09-01 08:34:43,905 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:34:43,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 356 events. 31/356 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 418 event pairs, 0 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 272. Up to 3 conditions per place. [2023-09-01 08:34:43,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 338 places, 359 transitions, 742 flow [2023-09-01 08:34:43,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 315 places, 335 transitions, 688 flow [2023-09-01 08:34:43,926 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:34:43,933 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 315 places, 335 transitions, 688 flow [2023-09-01 08:34:43,937 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 315 places, 335 transitions, 688 flow [2023-09-01 08:34:43,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 335 transitions, 688 flow [2023-09-01 08:34:44,010 INFO L130 PetriNetUnfolder]: 30/335 cut-off events. [2023-09-01 08:34:44,011 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:34:44,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 335 events. 30/335 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 419 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 272. Up to 3 conditions per place. [2023-09-01 08:34:44,016 INFO L119 LiptonReduction]: Number of co-enabled transitions 4714 [2023-09-01 08:35:01,576 INFO L134 LiptonReduction]: Checked pairs total: 8688 [2023-09-01 08:35:01,577 INFO L136 LiptonReduction]: Total number of compositions: 386 [2023-09-01 08:35:01,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:35:01,595 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;@1ba882dc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:35:01,595 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2023-09-01 08:35:01,603 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:35:01,603 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:35:01,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:01,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:35:01,605 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:01,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:01,609 INFO L85 PathProgramCache]: Analyzing trace with hash 47728, now seen corresponding path program 1 times [2023-09-01 08:35:01,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:01,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942168904] [2023-09-01 08:35:01,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:01,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:01,856 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 08:35:01,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:01,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942168904] [2023-09-01 08:35:01,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942168904] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:35:01,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:35:01,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:35:01,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887324465] [2023-09-01 08:35:01,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:35:01,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:35:01,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:01,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:35:01,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:35:01,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 745 [2023-09-01 08:35:01,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 states have internal predecessors, (947), 0 states have call successors, (0), 0 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 08:35:01,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:01,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 745 [2023-09-01 08:35:01,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:03,361 INFO L130 PetriNetUnfolder]: 7903/10259 cut-off events. [2023-09-01 08:35:03,362 INFO L131 PetriNetUnfolder]: For 304/304 co-relation queries the response was YES. [2023-09-01 08:35:03,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20817 conditions, 10259 events. 7903/10259 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 50743 event pairs, 4208 based on Foata normal form. 0/4235 useless extension candidates. Maximal degree in co-relation 9320. Up to 5058 conditions per place. [2023-09-01 08:35:03,430 INFO L137 encePairwiseOnDemand]: 725/745 looper letters, 95 selfloop transitions, 6 changer transitions 0/105 dead transitions. [2023-09-01 08:35:03,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 105 transitions, 448 flow [2023-09-01 08:35:03,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:35:03,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:35:03,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1068 transitions. [2023-09-01 08:35:03,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4778523489932886 [2023-09-01 08:35:03,447 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1068 transitions. [2023-09-01 08:35:03,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1068 transitions. [2023-09-01 08:35:03,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:03,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1068 transitions. [2023-09-01 08:35:03,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 0 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 08:35:03,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 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 08:35:03,467 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 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 08:35:03,469 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 150 flow. Second operand 3 states and 1068 transitions. [2023-09-01 08:35:03,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 105 transitions, 448 flow [2023-09-01 08:35:03,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 105 transitions, 424 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 08:35:03,493 INFO L231 Difference]: Finished difference. Result has 58 places, 63 transitions, 178 flow [2023-09-01 08:35:03,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=58, PETRI_TRANSITIONS=63} [2023-09-01 08:35:03,498 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2023-09-01 08:35:03,498 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 63 transitions, 178 flow [2023-09-01 08:35:03,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 states have internal predecessors, (947), 0 states have call successors, (0), 0 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 08:35:03,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:03,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:35:03,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:35:03,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:03,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:03,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1480951, now seen corresponding path program 1 times [2023-09-01 08:35:03,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:03,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475860241] [2023-09-01 08:35:03,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:03,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:03,569 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 08:35:03,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:03,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475860241] [2023-09-01 08:35:03,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475860241] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:35:03,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:35:03,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:35:03,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119080672] [2023-09-01 08:35:03,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:35:03,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:35:03,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:03,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:35:03,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:35:03,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 745 [2023-09-01 08:35:03,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 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 08:35:03,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:03,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 745 [2023-09-01 08:35:03,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:04,720 INFO L130 PetriNetUnfolder]: 7903/10256 cut-off events. [2023-09-01 08:35:04,720 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-09-01 08:35:04,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20546 conditions, 10256 events. 7903/10256 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 50867 event pairs, 4208 based on Foata normal form. 0/4221 useless extension candidates. Maximal degree in co-relation 10253. Up to 10104 conditions per place. [2023-09-01 08:35:04,778 INFO L137 encePairwiseOnDemand]: 741/745 looper letters, 55 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2023-09-01 08:35:04,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 278 flow [2023-09-01 08:35:04,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:35:04,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:35:04,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 999 transitions. [2023-09-01 08:35:04,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4469798657718121 [2023-09-01 08:35:04,782 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 999 transitions. [2023-09-01 08:35:04,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 999 transitions. [2023-09-01 08:35:04,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:04,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 999 transitions. [2023-09-01 08:35:04,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 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 08:35:04,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 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 08:35:04,791 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 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 08:35:04,791 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 178 flow. Second operand 3 states and 999 transitions. [2023-09-01 08:35:04,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 278 flow [2023-09-01 08:35:04,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 60 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:35:04,793 INFO L231 Difference]: Finished difference. Result has 55 places, 60 transitions, 156 flow [2023-09-01 08:35:04,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=55, PETRI_TRANSITIONS=60} [2023-09-01 08:35:04,794 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -13 predicate places. [2023-09-01 08:35:04,794 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 60 transitions, 156 flow [2023-09-01 08:35:04,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 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 08:35:04,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:04,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:35:04,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 08:35:04,796 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:04,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:04,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1480949, now seen corresponding path program 1 times [2023-09-01 08:35:04,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:04,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303007969] [2023-09-01 08:35:04,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:04,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:04,907 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 08:35:04,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:04,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303007969] [2023-09-01 08:35:04,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303007969] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:04,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588417460] [2023-09-01 08:35:04,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:04,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:04,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:04,913 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 08:35:04,947 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 08:35:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:05,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:35:05,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:05,077 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 08:35:05,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:35:05,093 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 08:35:05,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588417460] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:35:05,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:35:05,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:35:05,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701071150] [2023-09-01 08:35:05,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:35:05,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:35:05,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:05,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:35:05,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:35:05,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 745 [2023-09-01 08:35:05,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 60 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 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 08:35:05,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:05,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 745 [2023-09-01 08:35:05,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:07,727 INFO L130 PetriNetUnfolder]: 19756/25634 cut-off events. [2023-09-01 08:35:07,727 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2023-09-01 08:35:07,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51327 conditions, 25634 events. 19756/25634 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 1670. Compared 141218 event pairs, 10520 based on Foata normal form. 0/10621 useless extension candidates. Maximal degree in co-relation 51319. Up to 5056 conditions per place. [2023-09-01 08:35:07,890 INFO L137 encePairwiseOnDemand]: 736/745 looper letters, 218 selfloop transitions, 21 changer transitions 0/243 dead transitions. [2023-09-01 08:35:07,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 243 transitions, 1054 flow [2023-09-01 08:35:07,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:35:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:35:07,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2138 transitions. [2023-09-01 08:35:07,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47829977628635345 [2023-09-01 08:35:07,896 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2138 transitions. [2023-09-01 08:35:07,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2138 transitions. [2023-09-01 08:35:07,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:07,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2138 transitions. [2023-09-01 08:35:07,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 356.3333333333333) internal successors, (2138), 6 states have internal predecessors, (2138), 0 states have call successors, (0), 0 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 08:35:07,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 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 08:35:07,911 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 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 08:35:07,911 INFO L175 Difference]: Start difference. First operand has 55 places, 60 transitions, 156 flow. Second operand 6 states and 2138 transitions. [2023-09-01 08:35:07,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 243 transitions, 1054 flow [2023-09-01 08:35:07,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 243 transitions, 1053 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:35:07,918 INFO L231 Difference]: Finished difference. Result has 62 places, 75 transitions, 305 flow [2023-09-01 08:35:07,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=305, PETRI_PLACES=62, PETRI_TRANSITIONS=75} [2023-09-01 08:35:07,919 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2023-09-01 08:35:07,919 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 75 transitions, 305 flow [2023-09-01 08:35:07,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 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 08:35:07,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:07,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 08:35:07,935 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 08:35:08,127 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 08:35:08,128 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:08,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:08,128 INFO L85 PathProgramCache]: Analyzing trace with hash 45951744, now seen corresponding path program 1 times [2023-09-01 08:35:08,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:08,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161151197] [2023-09-01 08:35:08,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:08,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:08,272 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 08:35:08,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:08,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161151197] [2023-09-01 08:35:08,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161151197] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:35:08,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:35:08,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:35:08,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051510864] [2023-09-01 08:35:08,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:35:08,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:35:08,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:08,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:35:08,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:35:08,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 745 [2023-09-01 08:35:08,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 75 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 08:35:08,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:08,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 745 [2023-09-01 08:35:08,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:10,459 INFO L130 PetriNetUnfolder]: 19755/25633 cut-off events. [2023-09-01 08:35:10,459 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2023-09-01 08:35:10,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51375 conditions, 25633 events. 19755/25633 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 1670. Compared 141483 event pairs, 10520 based on Foata normal form. 1/10550 useless extension candidates. Maximal degree in co-relation 51363. Up to 25253 conditions per place. [2023-09-01 08:35:10,605 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 68 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-09-01 08:35:10,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 74 transitions, 441 flow [2023-09-01 08:35:10,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:35:10,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:35:10,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 989 transitions. [2023-09-01 08:35:10,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425055928411633 [2023-09-01 08:35:10,609 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 989 transitions. [2023-09-01 08:35:10,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 989 transitions. [2023-09-01 08:35:10,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:10,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 989 transitions. [2023-09-01 08:35:10,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 0 states have call successors, (0), 0 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 08:35:10,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 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 08:35:10,616 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 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 08:35:10,616 INFO L175 Difference]: Start difference. First operand has 62 places, 75 transitions, 305 flow. Second operand 3 states and 989 transitions. [2023-09-01 08:35:10,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 74 transitions, 441 flow [2023-09-01 08:35:10,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 411 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-09-01 08:35:10,620 INFO L231 Difference]: Finished difference. Result has 63 places, 74 transitions, 275 flow [2023-09-01 08:35:10,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=63, PETRI_TRANSITIONS=74} [2023-09-01 08:35:10,622 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2023-09-01 08:35:10,622 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 74 transitions, 275 flow [2023-09-01 08:35:10,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 08:35:10,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:10,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 08:35:10,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 08:35:10,624 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:10,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:10,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1423279047, now seen corresponding path program 1 times [2023-09-01 08:35:10,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:10,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179925956] [2023-09-01 08:35:10,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:10,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:35:10,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:10,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179925956] [2023-09-01 08:35:10,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179925956] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:35:10,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:35:10,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:35:10,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566783224] [2023-09-01 08:35:10,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:35:10,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:35:10,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:10,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:35:10,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:35:10,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 745 [2023-09-01 08:35:10,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 74 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 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 08:35:10,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:10,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 745 [2023-09-01 08:35:10,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:12,565 INFO L130 PetriNetUnfolder]: 15805/20511 cut-off events. [2023-09-01 08:35:12,565 INFO L131 PetriNetUnfolder]: For 117/117 co-relation queries the response was YES. [2023-09-01 08:35:12,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41110 conditions, 20511 events. 15805/20511 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 110490 event pairs, 8416 based on Foata normal form. 2/8447 useless extension candidates. Maximal degree in co-relation 41097. Up to 20198 conditions per place. [2023-09-01 08:35:12,663 INFO L137 encePairwiseOnDemand]: 734/745 looper letters, 57 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2023-09-01 08:35:12,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 409 flow [2023-09-01 08:35:12,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:35:12,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:35:12,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1300 transitions. [2023-09-01 08:35:12,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436241610738255 [2023-09-01 08:35:12,667 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1300 transitions. [2023-09-01 08:35:12,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1300 transitions. [2023-09-01 08:35:12,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:12,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1300 transitions. [2023-09-01 08:35:12,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 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 08:35:12,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 745.0) internal successors, (3725), 5 states have internal predecessors, (3725), 0 states have call successors, (0), 0 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 08:35:12,678 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 745.0) internal successors, (3725), 5 states have internal predecessors, (3725), 0 states have call successors, (0), 0 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 08:35:12,678 INFO L175 Difference]: Start difference. First operand has 63 places, 74 transitions, 275 flow. Second operand 4 states and 1300 transitions. [2023-09-01 08:35:12,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 409 flow [2023-09-01 08:35:12,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 405 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 08:35:12,681 INFO L231 Difference]: Finished difference. Result has 66 places, 73 transitions, 313 flow [2023-09-01 08:35:12,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=313, PETRI_PLACES=66, PETRI_TRANSITIONS=73} [2023-09-01 08:35:12,682 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2023-09-01 08:35:12,682 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 73 transitions, 313 flow [2023-09-01 08:35:12,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 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 08:35:12,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:12,683 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:35:12,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:35:12,683 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:12,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:12,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1170711598, now seen corresponding path program 2 times [2023-09-01 08:35:12,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:12,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754010540] [2023-09-01 08:35:12,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:12,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:12,766 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 08:35:12,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:12,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754010540] [2023-09-01 08:35:12,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754010540] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:12,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583491636] [2023-09-01 08:35:12,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:35:12,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:12,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:12,773 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 08:35:12,796 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 08:35:12,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:35:12,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:35:12,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:35:12,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:12,899 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 08:35:12,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:35:12,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583491636] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:35:12,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:35:12,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:35:12,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532230266] [2023-09-01 08:35:12,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:35:12,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:35:12,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:12,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:35:12,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:35:12,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 745 [2023-09-01 08:35:12,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 73 transitions, 313 flow. Second operand has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 0 states have call successors, (0), 0 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 08:35:12,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:12,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 745 [2023-09-01 08:35:12,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:14,666 INFO L130 PetriNetUnfolder]: 15805/20510 cut-off events. [2023-09-01 08:35:14,666 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2023-09-01 08:35:14,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41138 conditions, 20510 events. 15805/20510 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 110426 event pairs, 8416 based on Foata normal form. 1/8447 useless extension candidates. Maximal degree in co-relation 41123. Up to 20201 conditions per place. [2023-09-01 08:35:14,771 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 63 selfloop transitions, 5 changer transitions 0/72 dead transitions. [2023-09-01 08:35:14,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 72 transitions, 439 flow [2023-09-01 08:35:14,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:35:14,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:35:14,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1005 transitions. [2023-09-01 08:35:14,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44966442953020136 [2023-09-01 08:35:14,775 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1005 transitions. [2023-09-01 08:35:14,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1005 transitions. [2023-09-01 08:35:14,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:14,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1005 transitions. [2023-09-01 08:35:14,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:14,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 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 08:35:14,782 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 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 08:35:14,782 INFO L175 Difference]: Start difference. First operand has 66 places, 73 transitions, 313 flow. Second operand 3 states and 1005 transitions. [2023-09-01 08:35:14,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 72 transitions, 439 flow [2023-09-01 08:35:14,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 72 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:35:14,784 INFO L231 Difference]: Finished difference. Result has 65 places, 72 transitions, 300 flow [2023-09-01 08:35:14,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=65, PETRI_TRANSITIONS=72} [2023-09-01 08:35:14,785 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -3 predicate places. [2023-09-01 08:35:14,785 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 72 transitions, 300 flow [2023-09-01 08:35:14,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 0 states have call successors, (0), 0 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 08:35:14,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:14,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:35:14,794 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 08:35:14,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-09-01 08:35:14,992 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:14,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:14,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1970529539, now seen corresponding path program 1 times [2023-09-01 08:35:14,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:14,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893978308] [2023-09-01 08:35:14,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:14,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:15,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:35:15,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:15,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893978308] [2023-09-01 08:35:15,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893978308] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:15,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497558909] [2023-09-01 08:35:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:15,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:15,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:15,292 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 08:35:15,303 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 08:35:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:15,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 08:35:15,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:15,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 08:35:15,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:35:15,524 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:35:15,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:35:15,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:35:15,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:35:15,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:35:15,657 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:15,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-09-01 08:35:15,669 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:15,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-09-01 08:35:15,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-09-01 08:35:15,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:35:15,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497558909] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:35:15,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:35:15,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-09-01 08:35:15,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581021992] [2023-09-01 08:35:15,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:35:15,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:35:15,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:15,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:35:15,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=117, Unknown=1, NotChecked=0, Total=156 [2023-09-01 08:35:15,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 745 [2023-09-01 08:35:15,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 72 transitions, 300 flow. Second operand has 13 states, 13 states have (on average 268.2307692307692) internal successors, (3487), 13 states have internal predecessors, (3487), 0 states have call successors, (0), 0 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 08:35:15,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:15,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 745 [2023-09-01 08:35:15,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:17,950 INFO L130 PetriNetUnfolder]: 15805/20506 cut-off events. [2023-09-01 08:35:17,950 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2023-09-01 08:35:18,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41122 conditions, 20506 events. 15805/20506 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 110543 event pairs, 8416 based on Foata normal form. 0/8446 useless extension candidates. Maximal degree in co-relation 41107. Up to 20165 conditions per place. [2023-09-01 08:35:18,113 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 54 selfloop transitions, 13 changer transitions 0/71 dead transitions. [2023-09-01 08:35:18,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 71 transitions, 430 flow [2023-09-01 08:35:18,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:35:18,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:35:18,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1655 transitions. [2023-09-01 08:35:18,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37024608501118567 [2023-09-01 08:35:18,119 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1655 transitions. [2023-09-01 08:35:18,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1655 transitions. [2023-09-01 08:35:18,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:18,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1655 transitions. [2023-09-01 08:35:18,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 275.8333333333333) internal successors, (1655), 6 states have internal predecessors, (1655), 0 states have call successors, (0), 0 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 08:35:18,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 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 08:35:18,131 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 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 08:35:18,131 INFO L175 Difference]: Start difference. First operand has 65 places, 72 transitions, 300 flow. Second operand 6 states and 1655 transitions. [2023-09-01 08:35:18,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 71 transitions, 430 flow [2023-09-01 08:35:18,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 420 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:35:18,134 INFO L231 Difference]: Finished difference. Result has 67 places, 71 transitions, 312 flow [2023-09-01 08:35:18,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=67, PETRI_TRANSITIONS=71} [2023-09-01 08:35:18,135 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2023-09-01 08:35:18,135 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 71 transitions, 312 flow [2023-09-01 08:35:18,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 268.2307692307692) internal successors, (3487), 13 states have internal predecessors, (3487), 0 states have call successors, (0), 0 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 08:35:18,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:18,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:35:18,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-09-01 08:35:18,342 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 08:35:18,342 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:18,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:18,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1970529549, now seen corresponding path program 1 times [2023-09-01 08:35:18,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:18,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735657388] [2023-09-01 08:35:18,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:18,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:18,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:35:18,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:18,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735657388] [2023-09-01 08:35:18,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735657388] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:18,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514036232] [2023-09-01 08:35:18,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:18,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:18,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:18,733 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 08:35:18,735 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 08:35:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:18,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 08:35:18,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:18,923 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-09-01 08:35:18,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-09-01 08:35:18,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:35:18,972 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-09-01 08:35:18,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-09-01 08:35:18,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:35:19,023 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:35:19,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:35:19,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:35:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:35:19,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:35:19,252 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:19,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-09-01 08:35:19,261 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:19,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 59 [2023-09-01 08:35:19,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-09-01 08:35:19,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-09-01 08:35:19,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:35:19,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514036232] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:35:19,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:35:19,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-09-01 08:35:19,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455359206] [2023-09-01 08:35:19,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:35:19,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 08:35:19,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:19,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 08:35:19,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=207, Unknown=2, NotChecked=0, Total=272 [2023-09-01 08:35:20,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 745 [2023-09-01 08:35:20,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 71 transitions, 312 flow. Second operand has 17 states, 17 states have (on average 268.05882352941177) internal successors, (4557), 17 states have internal predecessors, (4557), 0 states have call successors, (0), 0 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 08:35:20,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:20,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 745 [2023-09-01 08:35:20,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:21,794 INFO L130 PetriNetUnfolder]: 15805/20502 cut-off events. [2023-09-01 08:35:21,794 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2023-09-01 08:35:21,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41121 conditions, 20502 events. 15805/20502 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 110434 event pairs, 8416 based on Foata normal form. 0/8450 useless extension candidates. Maximal degree in co-relation 41106. Up to 20165 conditions per place. [2023-09-01 08:35:21,899 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 53 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2023-09-01 08:35:21,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 440 flow [2023-09-01 08:35:21,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:35:21,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:35:21,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1654 transitions. [2023-09-01 08:35:21,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37002237136465327 [2023-09-01 08:35:21,905 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1654 transitions. [2023-09-01 08:35:21,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1654 transitions. [2023-09-01 08:35:21,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:21,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1654 transitions. [2023-09-01 08:35:21,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 275.6666666666667) internal successors, (1654), 6 states have internal predecessors, (1654), 0 states have call successors, (0), 0 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 08:35:21,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 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 08:35:21,915 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 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 08:35:21,915 INFO L175 Difference]: Start difference. First operand has 67 places, 71 transitions, 312 flow. Second operand 6 states and 1654 transitions. [2023-09-01 08:35:21,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 440 flow [2023-09-01 08:35:21,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 413 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-09-01 08:35:21,918 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 307 flow [2023-09-01 08:35:21,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2023-09-01 08:35:21,919 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2023-09-01 08:35:21,919 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 307 flow [2023-09-01 08:35:21,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 268.05882352941177) internal successors, (4557), 17 states have internal predecessors, (4557), 0 states have call successors, (0), 0 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 08:35:21,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:21,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:35:21,929 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 08:35:22,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:22,127 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:22,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:22,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1970529548, now seen corresponding path program 1 times [2023-09-01 08:35:22,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:22,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620403305] [2023-09-01 08:35:22,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:22,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:22,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:35:22,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:22,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620403305] [2023-09-01 08:35:22,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620403305] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:22,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030267088] [2023-09-01 08:35:22,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:22,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:22,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:22,557 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 08:35:22,559 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 08:35:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:22,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 26 conjunts are in the unsatisfiable core [2023-09-01 08:35:22,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:22,735 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-09-01 08:35:22,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-09-01 08:35:22,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:35:22,812 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-09-01 08:35:22,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-09-01 08:35:22,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:35:22,869 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:35:22,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:35:22,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:35:22,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:35:22,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:35:23,220 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:23,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-09-01 08:35:23,229 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:23,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2023-09-01 08:35:23,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2023-09-01 08:35:23,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-09-01 08:35:23,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:35:23,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030267088] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:35:23,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:35:23,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-09-01 08:35:23,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199319097] [2023-09-01 08:35:23,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:35:23,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 08:35:23,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:23,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 08:35:23,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=266, Unknown=4, NotChecked=0, Total=342 [2023-09-01 08:35:25,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:35:25,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 745 [2023-09-01 08:35:25,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 307 flow. Second operand has 19 states, 19 states have (on average 259.05263157894734) internal successors, (4922), 19 states have internal predecessors, (4922), 0 states have call successors, (0), 0 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 08:35:25,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:25,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 745 [2023-09-01 08:35:25,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:27,614 INFO L130 PetriNetUnfolder]: 15805/20498 cut-off events. [2023-09-01 08:35:27,614 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2023-09-01 08:35:27,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41108 conditions, 20498 events. 15805/20498 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 110457 event pairs, 8416 based on Foata normal form. 0/8450 useless extension candidates. Maximal degree in co-relation 41093. Up to 20165 conditions per place. [2023-09-01 08:35:27,723 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 50 selfloop transitions, 17 changer transitions 0/71 dead transitions. [2023-09-01 08:35:27,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 71 transitions, 448 flow [2023-09-01 08:35:27,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:35:27,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:35:27,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2123 transitions. [2023-09-01 08:35:27,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3562080536912752 [2023-09-01 08:35:27,730 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2123 transitions. [2023-09-01 08:35:27,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2123 transitions. [2023-09-01 08:35:27,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:27,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2123 transitions. [2023-09-01 08:35:27,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 265.375) internal successors, (2123), 8 states have internal predecessors, (2123), 0 states have call successors, (0), 0 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 08:35:27,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 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 08:35:27,743 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 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 08:35:27,743 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 307 flow. Second operand 8 states and 2123 transitions. [2023-09-01 08:35:27,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 71 transitions, 448 flow [2023-09-01 08:35:27,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 71 transitions, 443 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:35:27,745 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 339 flow [2023-09-01 08:35:27,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=339, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2023-09-01 08:35:27,746 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 4 predicate places. [2023-09-01 08:35:27,746 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 339 flow [2023-09-01 08:35:27,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 259.05263157894734) internal successors, (4922), 19 states have internal predecessors, (4922), 0 states have call successors, (0), 0 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 08:35:27,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:27,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:35:27,755 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 08:35:27,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:27,955 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:27,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:27,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1970529536, now seen corresponding path program 1 times [2023-09-01 08:35:27,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:27,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109546251] [2023-09-01 08:35:27,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:27,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:28,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:35:28,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:28,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109546251] [2023-09-01 08:35:28,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109546251] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:28,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788591729] [2023-09-01 08:35:28,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:28,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:28,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:28,169 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 08:35:28,224 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 08:35:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:28,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 08:35:28,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:28,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 08:35:28,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:35:28,348 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:35:28,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:35:28,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:35:28,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:35:28,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:35:28,395 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_374 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_374) c_~B~0.base) c_~B~0.offset) 9223372039002259456))) is different from false [2023-09-01 08:35:28,429 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:28,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-09-01 08:35:28,438 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:28,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-09-01 08:35:28,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-09-01 08:35:28,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-09-01 08:35:28,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788591729] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:35:28,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:35:28,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-09-01 08:35:28,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947213130] [2023-09-01 08:35:28,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:35:28,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 08:35:28,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:28,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 08:35:28,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=81, Unknown=1, NotChecked=18, Total=132 [2023-09-01 08:35:28,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 745 [2023-09-01 08:35:28,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 339 flow. Second operand has 12 states, 12 states have (on average 268.25) internal successors, (3219), 12 states have internal predecessors, (3219), 0 states have call successors, (0), 0 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 08:35:28,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:28,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 745 [2023-09-01 08:35:28,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:30,136 INFO L130 PetriNetUnfolder]: 15805/20494 cut-off events. [2023-09-01 08:35:30,136 INFO L131 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2023-09-01 08:35:30,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41110 conditions, 20494 events. 15805/20494 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 110462 event pairs, 8416 based on Foata normal form. 4/8450 useless extension candidates. Maximal degree in co-relation 41095. Up to 20165 conditions per place. [2023-09-01 08:35:30,227 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 51 selfloop transitions, 14 changer transitions 0/69 dead transitions. [2023-09-01 08:35:30,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 69 transitions, 465 flow [2023-09-01 08:35:30,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:35:30,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:35:30,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1652 transitions. [2023-09-01 08:35:30,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36957494407158836 [2023-09-01 08:35:30,232 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1652 transitions. [2023-09-01 08:35:30,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1652 transitions. [2023-09-01 08:35:30,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:30,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1652 transitions. [2023-09-01 08:35:30,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 275.3333333333333) internal successors, (1652), 6 states have internal predecessors, (1652), 0 states have call successors, (0), 0 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 08:35:30,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 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 08:35:30,242 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 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 08:35:30,242 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 339 flow. Second operand 6 states and 1652 transitions. [2023-09-01 08:35:30,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 69 transitions, 465 flow [2023-09-01 08:35:30,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 411 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-09-01 08:35:30,245 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 309 flow [2023-09-01 08:35:30,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=309, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2023-09-01 08:35:30,245 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 1 predicate places. [2023-09-01 08:35:30,245 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 309 flow [2023-09-01 08:35:30,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 268.25) internal successors, (3219), 12 states have internal predecessors, (3219), 0 states have call successors, (0), 0 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 08:35:30,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:30,247 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-09-01 08:35:30,254 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 08:35:30,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:30,455 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:30,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:30,455 INFO L85 PathProgramCache]: Analyzing trace with hash 955798492, now seen corresponding path program 1 times [2023-09-01 08:35:30,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:30,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844137819] [2023-09-01 08:35:30,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:30,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:30,548 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:35:30,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:30,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844137819] [2023-09-01 08:35:30,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844137819] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:30,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381247652] [2023-09-01 08:35:30,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:30,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:30,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:30,550 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 08:35:30,553 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 08:35:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:30,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 08:35:30,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:30,733 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:35:30,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:35:30,786 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:35:30,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381247652] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:35:30,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:35:30,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-09-01 08:35:30,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661378327] [2023-09-01 08:35:30,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:35:30,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 08:35:30,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:30,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 08:35:30,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-09-01 08:35:31,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 745 [2023-09-01 08:35:31,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 309 flow. Second operand has 14 states, 14 states have (on average 305.2857142857143) internal successors, (4274), 14 states have internal predecessors, (4274), 0 states have call successors, (0), 0 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 08:35:31,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:31,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 745 [2023-09-01 08:35:31,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:33,252 INFO L130 PetriNetUnfolder]: 18831/24440 cut-off events. [2023-09-01 08:35:33,252 INFO L131 PetriNetUnfolder]: For 178/178 co-relation queries the response was YES. [2023-09-01 08:35:33,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49007 conditions, 24440 events. 18831/24440 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 1381. Compared 132310 event pairs, 10030 based on Foata normal form. 2/10228 useless extension candidates. Maximal degree in co-relation 48993. Up to 15123 conditions per place. [2023-09-01 08:35:33,399 INFO L137 encePairwiseOnDemand]: 735/745 looper letters, 119 selfloop transitions, 22 changer transitions 0/145 dead transitions. [2023-09-01 08:35:33,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 145 transitions, 781 flow [2023-09-01 08:35:33,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 08:35:33,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 08:35:33,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2871 transitions. [2023-09-01 08:35:33,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42818791946308726 [2023-09-01 08:35:33,405 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2871 transitions. [2023-09-01 08:35:33,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2871 transitions. [2023-09-01 08:35:33,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:33,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2871 transitions. [2023-09-01 08:35:33,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 319.0) internal successors, (2871), 9 states have internal predecessors, (2871), 0 states have call successors, (0), 0 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 08:35:33,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 745.0) internal successors, (7450), 10 states have internal predecessors, (7450), 0 states have call successors, (0), 0 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 08:35:33,419 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 745.0) internal successors, (7450), 10 states have internal predecessors, (7450), 0 states have call successors, (0), 0 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 08:35:33,419 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 309 flow. Second operand 9 states and 2871 transitions. [2023-09-01 08:35:33,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 145 transitions, 781 flow [2023-09-01 08:35:33,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 145 transitions, 745 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 08:35:33,424 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 370 flow [2023-09-01 08:35:33,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=370, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2023-09-01 08:35:33,425 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2023-09-01 08:35:33,425 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 370 flow [2023-09-01 08:35:33,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 305.2857142857143) internal successors, (4274), 14 states have internal predecessors, (4274), 0 states have call successors, (0), 0 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 08:35:33,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:33,426 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-09-01 08:35:33,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 08:35:33,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:33,631 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:33,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:33,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1575423709, now seen corresponding path program 2 times [2023-09-01 08:35:33,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:33,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721009538] [2023-09-01 08:35:33,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:33,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:33,704 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:35:33,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:33,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721009538] [2023-09-01 08:35:33,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721009538] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:33,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300559436] [2023-09-01 08:35:33,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:35:33,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:33,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:33,706 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:35:33,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 08:35:33,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:35:33,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:35:33,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:35:33,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-09-01 08:35:33,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:35:33,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300559436] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:35:33,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:35:33,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-09-01 08:35:33,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46882463] [2023-09-01 08:35:33,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:35:33,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:35:33,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:33,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:35:33,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-09-01 08:35:33,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 745 [2023-09-01 08:35:33,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 370 flow. Second operand has 4 states, 4 states have (on average 317.25) internal successors, (1269), 4 states have internal predecessors, (1269), 0 states have call successors, (0), 0 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 08:35:33,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:33,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 745 [2023-09-01 08:35:33,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:35,369 INFO L130 PetriNetUnfolder]: 17448/22677 cut-off events. [2023-09-01 08:35:35,369 INFO L131 PetriNetUnfolder]: For 2216/2216 co-relation queries the response was YES. [2023-09-01 08:35:35,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45486 conditions, 22677 events. 17448/22677 cut-off events. For 2216/2216 co-relation queries the response was YES. Maximal size of possible extension queue 1390. Compared 123027 event pairs, 9295 based on Foata normal form. 695/10232 useless extension candidates. Maximal degree in co-relation 45469. Up to 22337 conditions per place. [2023-09-01 08:35:35,521 INFO L137 encePairwiseOnDemand]: 741/745 looper letters, 65 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2023-09-01 08:35:35,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 70 transitions, 472 flow [2023-09-01 08:35:35,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:35:35,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:35:35,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 994 transitions. [2023-09-01 08:35:35,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44474272930648767 [2023-09-01 08:35:35,524 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 994 transitions. [2023-09-01 08:35:35,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 994 transitions. [2023-09-01 08:35:35,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:35,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 994 transitions. [2023-09-01 08:35:35,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 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 08:35:35,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 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 08:35:35,529 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 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 08:35:35,529 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 370 flow. Second operand 3 states and 994 transitions. [2023-09-01 08:35:35,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 70 transitions, 472 flow [2023-09-01 08:35:35,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 70 transitions, 409 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-09-01 08:35:35,532 INFO L231 Difference]: Finished difference. Result has 66 places, 70 transitions, 279 flow [2023-09-01 08:35:35,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=66, PETRI_TRANSITIONS=70} [2023-09-01 08:35:35,533 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2023-09-01 08:35:35,534 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 70 transitions, 279 flow [2023-09-01 08:35:35,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 317.25) internal successors, (1269), 4 states have internal predecessors, (1269), 0 states have call successors, (0), 0 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 08:35:35,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:35,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:35:35,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 08:35:35,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-09-01 08:35:35,740 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:35,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:35,740 INFO L85 PathProgramCache]: Analyzing trace with hash 282061337, now seen corresponding path program 1 times [2023-09-01 08:35:35,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:35,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335463975] [2023-09-01 08:35:35,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:35,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:35,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:35:35,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:35,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335463975] [2023-09-01 08:35:35,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335463975] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:35,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511658246] [2023-09-01 08:35:35,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:35,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:35,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:35,839 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:35:35,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 08:35:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:35,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:35:35,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:36,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:35:36,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:35:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:35:36,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511658246] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:35:36,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:35:36,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-09-01 08:35:36,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752675068] [2023-09-01 08:35:36,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:35:36,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 08:35:36,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:36,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 08:35:36,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-09-01 08:35:36,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 745 [2023-09-01 08:35:36,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 70 transitions, 279 flow. Second operand has 12 states, 12 states have (on average 301.8333333333333) internal successors, (3622), 12 states have internal predecessors, (3622), 0 states have call successors, (0), 0 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 08:35:36,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:36,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 745 [2023-09-01 08:35:36,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:37,379 INFO L130 PetriNetUnfolder]: 10531/14466 cut-off events. [2023-09-01 08:35:37,379 INFO L131 PetriNetUnfolder]: For 119/119 co-relation queries the response was YES. [2023-09-01 08:35:37,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29122 conditions, 14466 events. 10531/14466 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 79870 event pairs, 5127 based on Foata normal form. 0/7653 useless extension candidates. Maximal degree in co-relation 29110. Up to 9862 conditions per place. [2023-09-01 08:35:37,507 INFO L137 encePairwiseOnDemand]: 730/745 looper letters, 115 selfloop transitions, 21 changer transitions 0/139 dead transitions. [2023-09-01 08:35:37,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 139 transitions, 699 flow [2023-09-01 08:35:37,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:35:37,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:35:37,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2532 transitions. [2023-09-01 08:35:37,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4248322147651007 [2023-09-01 08:35:37,511 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2532 transitions. [2023-09-01 08:35:37,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2532 transitions. [2023-09-01 08:35:37,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:37,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2532 transitions. [2023-09-01 08:35:37,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 316.5) internal successors, (2532), 8 states have internal predecessors, (2532), 0 states have call successors, (0), 0 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 08:35:37,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 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 08:35:37,520 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 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 08:35:37,520 INFO L175 Difference]: Start difference. First operand has 66 places, 70 transitions, 279 flow. Second operand 8 states and 2532 transitions. [2023-09-01 08:35:37,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 139 transitions, 699 flow [2023-09-01 08:35:37,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 139 transitions, 698 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:35:37,523 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 357 flow [2023-09-01 08:35:37,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=357, PETRI_PLACES=75, PETRI_TRANSITIONS=72} [2023-09-01 08:35:37,523 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2023-09-01 08:35:37,524 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 357 flow [2023-09-01 08:35:37,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 301.8333333333333) internal successors, (3622), 12 states have internal predecessors, (3622), 0 states have call successors, (0), 0 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 08:35:37,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:37,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:35:37,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 08:35:37,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-09-01 08:35:37,733 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:37,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:37,733 INFO L85 PathProgramCache]: Analyzing trace with hash -154369339, now seen corresponding path program 1 times [2023-09-01 08:35:37,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:37,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943679441] [2023-09-01 08:35:37,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:37,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:37,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:35:37,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:37,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943679441] [2023-09-01 08:35:37,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943679441] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:37,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002532129] [2023-09-01 08:35:37,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:37,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:37,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:37,827 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:35:37,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 08:35:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:37,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:35:37,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:38,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:35:38,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:35:38,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:35:38,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002532129] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:35:38,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:35:38,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-09-01 08:35:38,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771310436] [2023-09-01 08:35:38,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:35:38,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 08:35:38,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:38,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 08:35:38,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-09-01 08:35:38,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 745 [2023-09-01 08:35:38,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 72 transitions, 357 flow. Second operand has 12 states, 12 states have (on average 301.8333333333333) internal successors, (3622), 12 states have internal predecessors, (3622), 0 states have call successors, (0), 0 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 08:35:38,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:38,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 745 [2023-09-01 08:35:38,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:39,686 INFO L130 PetriNetUnfolder]: 10573/13984 cut-off events. [2023-09-01 08:35:39,687 INFO L131 PetriNetUnfolder]: For 1484/1586 co-relation queries the response was YES. [2023-09-01 08:35:39,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33814 conditions, 13984 events. 10573/13984 cut-off events. For 1484/1586 co-relation queries the response was YES. Maximal size of possible extension queue 991. Compared 76890 event pairs, 4490 based on Foata normal form. 102/7068 useless extension candidates. Maximal degree in co-relation 33798. Up to 10177 conditions per place. [2023-09-01 08:35:39,767 INFO L137 encePairwiseOnDemand]: 735/745 looper letters, 100 selfloop transitions, 21 changer transitions 0/125 dead transitions. [2023-09-01 08:35:39,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 125 transitions, 732 flow [2023-09-01 08:35:39,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:35:39,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:35:39,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2512 transitions. [2023-09-01 08:35:39,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4214765100671141 [2023-09-01 08:35:39,771 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2512 transitions. [2023-09-01 08:35:39,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2512 transitions. [2023-09-01 08:35:39,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:39,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2512 transitions. [2023-09-01 08:35:39,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 314.0) internal successors, (2512), 8 states have internal predecessors, (2512), 0 states have call successors, (0), 0 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 08:35:39,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 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 08:35:39,779 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 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 08:35:39,779 INFO L175 Difference]: Start difference. First operand has 75 places, 72 transitions, 357 flow. Second operand 8 states and 2512 transitions. [2023-09-01 08:35:39,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 125 transitions, 732 flow [2023-09-01 08:35:39,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 125 transitions, 708 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 08:35:39,788 INFO L231 Difference]: Finished difference. Result has 82 places, 74 transitions, 402 flow [2023-09-01 08:35:39,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=402, PETRI_PLACES=82, PETRI_TRANSITIONS=74} [2023-09-01 08:35:39,789 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 14 predicate places. [2023-09-01 08:35:39,790 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 74 transitions, 402 flow [2023-09-01 08:35:39,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 301.8333333333333) internal successors, (3622), 12 states have internal predecessors, (3622), 0 states have call successors, (0), 0 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 08:35:39,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:39,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:35:39,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 08:35:39,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-09-01 08:35:39,996 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:39,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:39,997 INFO L85 PathProgramCache]: Analyzing trace with hash -2068436720, now seen corresponding path program 1 times [2023-09-01 08:35:39,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:39,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206459014] [2023-09-01 08:35:39,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:39,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:40,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:35:40,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:40,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206459014] [2023-09-01 08:35:40,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206459014] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:35:40,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:35:40,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:35:40,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682132747] [2023-09-01 08:35:40,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:35:40,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:35:40,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:40,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:35:40,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:35:40,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 745 [2023-09-01 08:35:40,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 402 flow. Second operand has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 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 08:35:40,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:40,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 745 [2023-09-01 08:35:40,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:41,651 INFO L130 PetriNetUnfolder]: 15794/20674 cut-off events. [2023-09-01 08:35:41,651 INFO L131 PetriNetUnfolder]: For 3872/4064 co-relation queries the response was YES. [2023-09-01 08:35:41,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53127 conditions, 20674 events. 15794/20674 cut-off events. For 3872/4064 co-relation queries the response was YES. Maximal size of possible extension queue 1213. Compared 116074 event pairs, 6249 based on Foata normal form. 192/11750 useless extension candidates. Maximal degree in co-relation 53107. Up to 14052 conditions per place. [2023-09-01 08:35:41,735 INFO L137 encePairwiseOnDemand]: 741/745 looper letters, 98 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2023-09-01 08:35:41,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 105 transitions, 691 flow [2023-09-01 08:35:41,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:35:41,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:35:41,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1041 transitions. [2023-09-01 08:35:41,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657718120805369 [2023-09-01 08:35:41,738 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1041 transitions. [2023-09-01 08:35:41,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1041 transitions. [2023-09-01 08:35:41,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:41,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1041 transitions. [2023-09-01 08:35:41,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 347.0) internal successors, (1041), 3 states have internal predecessors, (1041), 0 states have call successors, (0), 0 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 08:35:41,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 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 08:35:41,741 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 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 08:35:41,741 INFO L175 Difference]: Start difference. First operand has 82 places, 74 transitions, 402 flow. Second operand 3 states and 1041 transitions. [2023-09-01 08:35:41,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 105 transitions, 691 flow [2023-09-01 08:35:41,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 105 transitions, 667 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 08:35:41,755 INFO L231 Difference]: Finished difference. Result has 82 places, 75 transitions, 392 flow [2023-09-01 08:35:41,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=392, PETRI_PLACES=82, PETRI_TRANSITIONS=75} [2023-09-01 08:35:41,755 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 14 predicate places. [2023-09-01 08:35:41,756 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 75 transitions, 392 flow [2023-09-01 08:35:41,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 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 08:35:41,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:41,756 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:35:41,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 08:35:41,756 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:41,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:41,757 INFO L85 PathProgramCache]: Analyzing trace with hash 462161770, now seen corresponding path program 1 times [2023-09-01 08:35:41,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:41,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564343844] [2023-09-01 08:35:41,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:41,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:41,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:41,820 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-09-01 08:35:41,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:41,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564343844] [2023-09-01 08:35:41,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564343844] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:35:41,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:35:41,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:35:41,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812767808] [2023-09-01 08:35:41,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:35:41,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:35:41,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:41,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:35:41,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:35:41,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 745 [2023-09-01 08:35:41,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 75 transitions, 392 flow. Second operand has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 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 08:35:41,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:41,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 745 [2023-09-01 08:35:41,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:43,829 INFO L130 PetriNetUnfolder]: 23605/31813 cut-off events. [2023-09-01 08:35:43,829 INFO L131 PetriNetUnfolder]: For 6979/7097 co-relation queries the response was YES. [2023-09-01 08:35:43,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82135 conditions, 31813 events. 23605/31813 cut-off events. For 6979/7097 co-relation queries the response was YES. Maximal size of possible extension queue 1714. Compared 188214 event pairs, 9249 based on Foata normal form. 118/18942 useless extension candidates. Maximal degree in co-relation 82114. Up to 17753 conditions per place. [2023-09-01 08:35:44,075 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 102 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2023-09-01 08:35:44,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 109 transitions, 703 flow [2023-09-01 08:35:44,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:35:44,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:35:44,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1043 transitions. [2023-09-01 08:35:44,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-09-01 08:35:44,078 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1043 transitions. [2023-09-01 08:35:44,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1043 transitions. [2023-09-01 08:35:44,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:44,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1043 transitions. [2023-09-01 08:35:44,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 347.6666666666667) internal successors, (1043), 3 states have internal predecessors, (1043), 0 states have call successors, (0), 0 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 08:35:44,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 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 08:35:44,081 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 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 08:35:44,081 INFO L175 Difference]: Start difference. First operand has 82 places, 75 transitions, 392 flow. Second operand 3 states and 1043 transitions. [2023-09-01 08:35:44,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 109 transitions, 703 flow [2023-09-01 08:35:44,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 109 transitions, 700 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:35:44,114 INFO L231 Difference]: Finished difference. Result has 84 places, 76 transitions, 407 flow [2023-09-01 08:35:44,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=407, PETRI_PLACES=84, PETRI_TRANSITIONS=76} [2023-09-01 08:35:44,114 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 16 predicate places. [2023-09-01 08:35:44,115 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 76 transitions, 407 flow [2023-09-01 08:35:44,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 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 08:35:44,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:44,115 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:35:44,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 08:35:44,115 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:44,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:44,116 INFO L85 PathProgramCache]: Analyzing trace with hash 462161765, now seen corresponding path program 2 times [2023-09-01 08:35:44,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:44,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219280069] [2023-09-01 08:35:44,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:44,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:44,784 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:35:44,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:44,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219280069] [2023-09-01 08:35:44,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219280069] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:44,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311806280] [2023-09-01 08:35:44,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:35:44,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:44,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:44,789 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:35:44,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 08:35:44,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 08:35:44,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:35:44,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 38 conjunts are in the unsatisfiable core [2023-09-01 08:35:44,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:45,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 08:35:45,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:35:45,148 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:35:45,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:35:45,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:35:45,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:35:45,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:35:45,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:35:45,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:35:45,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:35:45,313 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:35:45,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:35:45,426 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_737 (Array Int Int)) (v_ArrVal_739 (Array Int Int)) (v_ArrVal_738 (Array Int Int))) (< 0 (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_737) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_738) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_739) c_~B~0.base) (+ 4 c_~B~0.offset)) 9223372039002259456))) is different from false [2023-09-01 08:35:45,480 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:45,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2023-09-01 08:35:45,491 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:45,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1235 treesize of output 1187 [2023-09-01 08:35:45,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2023-09-01 08:35:45,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 55 [2023-09-01 08:35:45,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 54 [2023-09-01 08:35:45,716 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:45,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2023-09-01 08:35:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2023-09-01 08:35:45,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311806280] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:35:45,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:35:45,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 29 [2023-09-01 08:35:45,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061783642] [2023-09-01 08:35:45,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:35:45,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-09-01 08:35:45,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:45,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-09-01 08:35:45,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=741, Unknown=13, NotChecked=56, Total=930 [2023-09-01 08:35:45,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 745 [2023-09-01 08:35:45,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 76 transitions, 407 flow. Second operand has 31 states, 31 states have (on average 240.38709677419354) internal successors, (7452), 31 states have internal predecessors, (7452), 0 states have call successors, (0), 0 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 08:35:45,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:45,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 745 [2023-09-01 08:35:45,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:50,000 INFO L130 PetriNetUnfolder]: 29297/40987 cut-off events. [2023-09-01 08:35:50,000 INFO L131 PetriNetUnfolder]: For 15944/16059 co-relation queries the response was YES. [2023-09-01 08:35:50,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105833 conditions, 40987 events. 29297/40987 cut-off events. For 15944/16059 co-relation queries the response was YES. Maximal size of possible extension queue 2303. Compared 272451 event pairs, 4245 based on Foata normal form. 115/26247 useless extension candidates. Maximal degree in co-relation 105811. Up to 16216 conditions per place. [2023-09-01 08:35:50,210 INFO L137 encePairwiseOnDemand]: 731/745 looper letters, 209 selfloop transitions, 52 changer transitions 0/265 dead transitions. [2023-09-01 08:35:50,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 265 transitions, 1535 flow [2023-09-01 08:35:50,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-09-01 08:35:50,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-09-01 08:35:50,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5268 transitions. [2023-09-01 08:35:50,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367209971236817 [2023-09-01 08:35:50,217 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5268 transitions. [2023-09-01 08:35:50,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5268 transitions. [2023-09-01 08:35:50,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:50,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5268 transitions. [2023-09-01 08:35:50,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 250.85714285714286) internal successors, (5268), 21 states have internal predecessors, (5268), 0 states have call successors, (0), 0 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 08:35:50,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 745.0) internal successors, (16390), 22 states have internal predecessors, (16390), 0 states have call successors, (0), 0 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 08:35:50,234 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 745.0) internal successors, (16390), 22 states have internal predecessors, (16390), 0 states have call successors, (0), 0 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 08:35:50,234 INFO L175 Difference]: Start difference. First operand has 84 places, 76 transitions, 407 flow. Second operand 21 states and 5268 transitions. [2023-09-01 08:35:50,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 265 transitions, 1535 flow [2023-09-01 08:35:50,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 265 transitions, 1525 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:35:50,260 INFO L231 Difference]: Finished difference. Result has 108 places, 109 transitions, 706 flow [2023-09-01 08:35:50,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=706, PETRI_PLACES=108, PETRI_TRANSITIONS=109} [2023-09-01 08:35:50,260 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 40 predicate places. [2023-09-01 08:35:50,260 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 109 transitions, 706 flow [2023-09-01 08:35:50,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 240.38709677419354) internal successors, (7452), 31 states have internal predecessors, (7452), 0 states have call successors, (0), 0 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 08:35:50,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:50,262 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:35:50,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 08:35:50,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-09-01 08:35:50,468 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:50,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:50,468 INFO L85 PathProgramCache]: Analyzing trace with hash 462161768, now seen corresponding path program 1 times [2023-09-01 08:35:50,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:50,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375478287] [2023-09-01 08:35:50,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:50,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:51,124 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:35:51,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:51,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375478287] [2023-09-01 08:35:51,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375478287] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:51,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91479597] [2023-09-01 08:35:51,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:51,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:51,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:51,126 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:35:51,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 08:35:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:51,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 38 conjunts are in the unsatisfiable core [2023-09-01 08:35:51,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:51,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:35:51,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:35:51,337 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-09-01 08:35:51,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2023-09-01 08:35:51,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:35:51,468 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-09-01 08:35:51,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-09-01 08:35:51,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:35:51,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:35:51,572 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-09-01 08:35:51,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:35:51,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:35:51,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:35:51,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:35:51,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:35:51,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:35:51,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:35:51,793 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 08:35:51,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:35:55,959 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_820 (Array Int Int)) (~B~0.offset Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_820))) (let ((.cse0 (select (select .cse1 c_~B~0.base) (+ ~B~0.offset 4)))) (or (<= .cse0 0) (<= 0 (+ (select (select .cse1 c_~A~0.base) .cse2) .cse0 2147483648)) (< 4294967295 .cse0))))) (forall ((v_ArrVal_820 (Array Int Int)) (~B~0.offset Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_820))) (let ((.cse3 (select (select .cse4 c_~B~0.base) (+ ~B~0.offset 4)))) (or (< 0 .cse3) (<= 0 (+ (select (select .cse4 c_~A~0.base) .cse2) .cse3 2147483648)) (< .cse3 0))))))) is different from false [2023-09-01 08:35:56,012 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_820 (Array Int Int)) (~B~0.offset Int) (v_ArrVal_819 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_819) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_820))) (let ((.cse0 (select (select .cse1 c_~B~0.base) (+ ~B~0.offset 4)))) (or (< 4294967295 .cse0) (<= 0 (+ .cse0 (select (select .cse1 c_~A~0.base) .cse2) 2147483648)) (<= .cse0 0))))) (forall ((v_ArrVal_820 (Array Int Int)) (~B~0.offset Int) (v_ArrVal_819 (Array Int Int))) (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_819) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_820))) (let ((.cse3 (select (select .cse4 c_~B~0.base) (+ ~B~0.offset 4)))) (or (< 0 .cse3) (<= 0 (+ .cse3 (select (select .cse4 c_~A~0.base) .cse2) 2147483648)) (< .cse3 0))))))) is different from false [2023-09-01 08:35:56,043 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_820 (Array Int Int)) (v_ArrVal_818 (Array Int Int)) (~B~0.offset Int) (v_ArrVal_819 (Array Int Int))) (let ((.cse0 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_818) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_819) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_820))) (let ((.cse2 (select (select .cse0 c_~B~0.base) (+ ~B~0.offset 4)))) (or (<= 0 (+ (select (select .cse0 c_~A~0.base) .cse1) .cse2 2147483648)) (< 0 .cse2) (< .cse2 0))))) (forall ((v_ArrVal_820 (Array Int Int)) (v_ArrVal_818 (Array Int Int)) (~B~0.offset Int) (v_ArrVal_819 (Array Int Int))) (let ((.cse3 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_818) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_819) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_820))) (let ((.cse4 (select (select .cse3 c_~B~0.base) (+ ~B~0.offset 4)))) (or (<= 0 (+ (select (select .cse3 c_~A~0.base) .cse1) .cse4 2147483648)) (< 4294967295 .cse4) (<= .cse4 0))))))) is different from false [2023-09-01 08:35:58,691 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:58,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 297 treesize of output 214 [2023-09-01 08:35:58,827 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:58,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6723821 treesize of output 6619373 [2023-09-01 08:36:00,913 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:36:00,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6591 treesize of output 6056 [2023-09-01 08:36:01,007 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:36:01,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6047 treesize of output 5784 [2023-09-01 08:36:01,100 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:36:01,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5775 treesize of output 5680 [2023-09-01 08:36:01,191 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:36:01,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5671 treesize of output 5544 [2023-09-01 08:36:01,284 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:36:01,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5535 treesize of output 5000 [2023-09-01 08:36:01,386 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:36:01,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4991 treesize of output 4896 [2023-09-01 08:36:01,491 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:36:01,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4887 treesize of output 4760 [2023-09-01 08:36:01,632 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:36:01,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4751 treesize of output 4488 [2023-09-01 08:36:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2023-09-01 08:36:18,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91479597] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:36:18,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:36:18,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 29 [2023-09-01 08:36:18,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808793741] [2023-09-01 08:36:18,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:36:18,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-09-01 08:36:18,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:36:18,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-09-01 08:36:18,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=634, Unknown=6, NotChecked=162, Total=930 [2023-09-01 08:36:18,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 745 [2023-09-01 08:36:18,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 109 transitions, 706 flow. Second operand has 31 states, 31 states have (on average 258.4193548387097) internal successors, (8011), 31 states have internal predecessors, (8011), 0 states have call successors, (0), 0 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 08:36:18,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:36:18,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 745 [2023-09-01 08:36:18,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:36:23,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:25,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:27,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:29,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:31,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:33,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:35,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:37,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:39,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:41,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:43,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:45,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:47,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:49,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:52,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:54,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:57,077 INFO L130 PetriNetUnfolder]: 28632/39802 cut-off events. [2023-09-01 08:36:57,077 INFO L131 PetriNetUnfolder]: For 31331/31452 co-relation queries the response was YES. [2023-09-01 08:36:57,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110860 conditions, 39802 events. 28632/39802 cut-off events. For 31331/31452 co-relation queries the response was YES. Maximal size of possible extension queue 2349. Compared 261093 event pairs, 8938 based on Foata normal form. 121/26700 useless extension candidates. Maximal degree in co-relation 110832. Up to 34632 conditions per place. [2023-09-01 08:36:57,399 INFO L137 encePairwiseOnDemand]: 736/745 looper letters, 130 selfloop transitions, 33 changer transitions 0/167 dead transitions. [2023-09-01 08:36:57,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 167 transitions, 1224 flow [2023-09-01 08:36:57,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 08:36:57,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 08:36:57,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2682 transitions. [2023-09-01 08:36:57,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2023-09-01 08:36:57,403 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2682 transitions. [2023-09-01 08:36:57,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2682 transitions. [2023-09-01 08:36:57,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:36:57,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2682 transitions. [2023-09-01 08:36:57,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 268.2) internal successors, (2682), 10 states have internal predecessors, (2682), 0 states have call successors, (0), 0 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 08:36:57,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 745.0) internal successors, (8195), 11 states have internal predecessors, (8195), 0 states have call successors, (0), 0 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 08:36:57,410 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 745.0) internal successors, (8195), 11 states have internal predecessors, (8195), 0 states have call successors, (0), 0 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 08:36:57,410 INFO L175 Difference]: Start difference. First operand has 108 places, 109 transitions, 706 flow. Second operand 10 states and 2682 transitions. [2023-09-01 08:36:57,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 167 transitions, 1224 flow [2023-09-01 08:36:57,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 167 transitions, 1199 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-09-01 08:36:57,462 INFO L231 Difference]: Finished difference. Result has 116 places, 112 transitions, 783 flow [2023-09-01 08:36:57,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=783, PETRI_PLACES=116, PETRI_TRANSITIONS=112} [2023-09-01 08:36:57,463 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 48 predicate places. [2023-09-01 08:36:57,463 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 112 transitions, 783 flow [2023-09-01 08:36:57,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 258.4193548387097) internal successors, (8011), 31 states have internal predecessors, (8011), 0 states have call successors, (0), 0 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 08:36:57,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:36:57,464 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:36:57,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-09-01 08:36:57,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-09-01 08:36:57,670 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:36:57,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:36:57,670 INFO L85 PathProgramCache]: Analyzing trace with hash 462161766, now seen corresponding path program 1 times [2023-09-01 08:36:57,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:36:57,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205994771] [2023-09-01 08:36:57,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:36:57,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:36:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:36:58,312 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 08:36:58,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:36:58,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205994771] [2023-09-01 08:36:58,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205994771] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:36:58,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220347636] [2023-09-01 08:36:58,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:36:58,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:36:58,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:36:58,314 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:36:58,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-09-01 08:36:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:36:58,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 38 conjunts are in the unsatisfiable core [2023-09-01 08:36:58,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:36:58,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 08:36:58,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:36:58,673 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:36:58,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:36:58,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:36:58,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:36:58,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:36:58,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:36:58,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:36:58,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:36:58,819 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:36:58,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:36:58,857 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_895 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_895) c_~B~0.base) (+ 4 c_~B~0.offset)) 4294967296)) is different from false [2023-09-01 08:36:58,978 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:36:58,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-09-01 08:36:58,989 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:36:58,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 553 treesize of output 529 [2023-09-01 08:36:59,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2023-09-01 08:36:59,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2023-09-01 08:36:59,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 46 [2023-09-01 08:36:59,199 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:36:59,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2023-09-01 08:36:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 08:36:59,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220347636] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:36:59,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:36:59,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 25 [2023-09-01 08:36:59,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105036472] [2023-09-01 08:36:59,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:36:59,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-09-01 08:36:59,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:36:59,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-09-01 08:36:59,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=549, Unknown=8, NotChecked=48, Total=702 [2023-09-01 08:36:59,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 745 [2023-09-01 08:36:59,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 112 transitions, 783 flow. Second operand has 27 states, 27 states have (on average 259.44444444444446) internal successors, (7005), 27 states have internal predecessors, (7005), 0 states have call successors, (0), 0 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 08:36:59,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:36:59,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 745 [2023-09-01 08:36:59,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:03,569 INFO L130 PetriNetUnfolder]: 28680/39826 cut-off events. [2023-09-01 08:37:03,569 INFO L131 PetriNetUnfolder]: For 37968/38086 co-relation queries the response was YES. [2023-09-01 08:37:03,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112541 conditions, 39826 events. 28680/39826 cut-off events. For 37968/38086 co-relation queries the response was YES. Maximal size of possible extension queue 2359. Compared 260943 event pairs, 5685 based on Foata normal form. 118/27942 useless extension candidates. Maximal degree in co-relation 112511. Up to 23304 conditions per place. [2023-09-01 08:37:03,835 INFO L137 encePairwiseOnDemand]: 731/745 looper letters, 131 selfloop transitions, 53 changer transitions 0/188 dead transitions. [2023-09-01 08:37:03,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 188 transitions, 1389 flow [2023-09-01 08:37:03,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 08:37:03,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 08:37:03,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3498 transitions. [2023-09-01 08:37:03,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36117707795560144 [2023-09-01 08:37:03,840 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3498 transitions. [2023-09-01 08:37:03,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3498 transitions. [2023-09-01 08:37:03,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:03,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3498 transitions. [2023-09-01 08:37:03,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 269.0769230769231) internal successors, (3498), 13 states have internal predecessors, (3498), 0 states have call successors, (0), 0 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 08:37:03,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 745.0) internal successors, (10430), 14 states have internal predecessors, (10430), 0 states have call successors, (0), 0 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 08:37:03,851 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 745.0) internal successors, (10430), 14 states have internal predecessors, (10430), 0 states have call successors, (0), 0 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 08:37:03,851 INFO L175 Difference]: Start difference. First operand has 116 places, 112 transitions, 783 flow. Second operand 13 states and 3498 transitions. [2023-09-01 08:37:03,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 188 transitions, 1389 flow [2023-09-01 08:37:03,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 188 transitions, 1378 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-09-01 08:37:03,911 INFO L231 Difference]: Finished difference. Result has 125 places, 115 transitions, 908 flow [2023-09-01 08:37:03,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=908, PETRI_PLACES=125, PETRI_TRANSITIONS=115} [2023-09-01 08:37:03,911 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 57 predicate places. [2023-09-01 08:37:03,911 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 115 transitions, 908 flow [2023-09-01 08:37:03,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 259.44444444444446) internal successors, (7005), 27 states have internal predecessors, (7005), 0 states have call successors, (0), 0 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 08:37:03,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:03,913 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:37:03,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-09-01 08:37:04,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:04,113 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:37:04,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:04,114 INFO L85 PathProgramCache]: Analyzing trace with hash 462161769, now seen corresponding path program 1 times [2023-09-01 08:37:04,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:04,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957153800] [2023-09-01 08:37:04,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:04,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:04,772 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:37:04,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:04,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957153800] [2023-09-01 08:37:04,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957153800] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:37:04,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624475185] [2023-09-01 08:37:04,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:04,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:04,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:04,774 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:37:04,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-09-01 08:37:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:04,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 38 conjunts are in the unsatisfiable core [2023-09-01 08:37:04,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:37:04,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:37:04,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:37:05,008 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-09-01 08:37:05,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2023-09-01 08:37:05,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:37:05,137 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-09-01 08:37:05,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-09-01 08:37:05,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:37:05,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:37:05,246 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:37:05,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:37:05,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:37:05,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:37:05,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:37:05,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:37:05,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:37:05,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:37:05,388 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:37:05,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:37:05,711 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:05,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-09-01 08:37:05,737 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:05,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35073 treesize of output 34305 [2023-09-01 08:37:05,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 123 [2023-09-01 08:37:05,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 115 [2023-09-01 08:37:05,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 99 [2023-09-01 08:37:05,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 98 [2023-09-01 08:37:06,204 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:37:06,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624475185] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:37:06,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:37:06,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2023-09-01 08:37:06,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215372786] [2023-09-01 08:37:06,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:37:06,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-09-01 08:37:06,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:06,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-09-01 08:37:06,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=761, Unknown=15, NotChecked=0, Total=930 [2023-09-01 08:37:07,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 745 [2023-09-01 08:37:07,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 115 transitions, 908 flow. Second operand has 31 states, 31 states have (on average 260.4193548387097) internal successors, (8073), 31 states have internal predecessors, (8073), 0 states have call successors, (0), 0 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 08:37:07,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:07,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 745 [2023-09-01 08:37:07,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:10,826 INFO L130 PetriNetUnfolder]: 27570/38182 cut-off events. [2023-09-01 08:37:10,826 INFO L131 PetriNetUnfolder]: For 52350/52471 co-relation queries the response was YES. [2023-09-01 08:37:10,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112164 conditions, 38182 events. 27570/38182 cut-off events. For 52350/52471 co-relation queries the response was YES. Maximal size of possible extension queue 2232. Compared 246734 event pairs, 8722 based on Foata normal form. 145/27664 useless extension candidates. Maximal degree in co-relation 112133. Up to 33144 conditions per place. [2023-09-01 08:37:11,085 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 130 selfloop transitions, 35 changer transitions 0/169 dead transitions. [2023-09-01 08:37:11,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 169 transitions, 1420 flow [2023-09-01 08:37:11,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 08:37:11,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 08:37:11,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2441 transitions. [2023-09-01 08:37:11,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640566741237882 [2023-09-01 08:37:11,089 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2441 transitions. [2023-09-01 08:37:11,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2441 transitions. [2023-09-01 08:37:11,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:11,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2441 transitions. [2023-09-01 08:37:11,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 271.22222222222223) internal successors, (2441), 9 states have internal predecessors, (2441), 0 states have call successors, (0), 0 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 08:37:11,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 745.0) internal successors, (7450), 10 states have internal predecessors, (7450), 0 states have call successors, (0), 0 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 08:37:11,097 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 745.0) internal successors, (7450), 10 states have internal predecessors, (7450), 0 states have call successors, (0), 0 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 08:37:11,097 INFO L175 Difference]: Start difference. First operand has 125 places, 115 transitions, 908 flow. Second operand 9 states and 2441 transitions. [2023-09-01 08:37:11,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 169 transitions, 1420 flow [2023-09-01 08:37:11,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 169 transitions, 1363 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-09-01 08:37:11,160 INFO L231 Difference]: Finished difference. Result has 125 places, 115 transitions, 933 flow [2023-09-01 08:37:11,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=933, PETRI_PLACES=125, PETRI_TRANSITIONS=115} [2023-09-01 08:37:11,160 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 57 predicate places. [2023-09-01 08:37:11,161 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 115 transitions, 933 flow [2023-09-01 08:37:11,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 260.4193548387097) internal successors, (8073), 31 states have internal predecessors, (8073), 0 states have call successors, (0), 0 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 08:37:11,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:11,162 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:37:11,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-09-01 08:37:11,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:11,363 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:37:11,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:11,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1442416823, now seen corresponding path program 1 times [2023-09-01 08:37:11,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:11,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619469581] [2023-09-01 08:37:11,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:11,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:12,019 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 08:37:12,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:12,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619469581] [2023-09-01 08:37:12,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619469581] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:37:12,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963069143] [2023-09-01 08:37:12,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:12,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:12,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:12,021 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:37:12,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-09-01 08:37:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:12,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 40 conjunts are in the unsatisfiable core [2023-09-01 08:37:12,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:37:12,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 08:37:12,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:37:12,369 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:37:12,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:37:12,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:37:12,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:37:12,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:37:12,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:37:12,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:37:12,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:37:12,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:37:12,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:37:12,538 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:37:12,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:37:12,607 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1056 (Array Int Int)) (v_ArrVal_1055 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1055) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1056) c_~B~0.base) (+ 4 c_~B~0.offset)) 9223372039002259456))) is different from false [2023-09-01 08:37:12,747 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:12,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2023-09-01 08:37:12,757 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:12,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9795 treesize of output 9603 [2023-09-01 08:37:12,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 139 [2023-09-01 08:37:12,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 286 treesize of output 254 [2023-09-01 08:37:12,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 115 [2023-09-01 08:37:12,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 114 [2023-09-01 08:37:13,070 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:13,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 62 [2023-09-01 08:37:13,195 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 08:37:13,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963069143] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:37:13,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:37:13,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 28 [2023-09-01 08:37:13,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851155571] [2023-09-01 08:37:13,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:37:13,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-09-01 08:37:13,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:13,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-09-01 08:37:13,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=675, Unknown=15, NotChecked=54, Total=870 [2023-09-01 08:37:13,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 745 [2023-09-01 08:37:13,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 115 transitions, 933 flow. Second operand has 30 states, 30 states have (on average 258.43333333333334) internal successors, (7753), 30 states have internal predecessors, (7753), 0 states have call successors, (0), 0 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 08:37:13,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:13,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 745 [2023-09-01 08:37:13,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:17,670 INFO L130 PetriNetUnfolder]: 26237/36363 cut-off events. [2023-09-01 08:37:17,670 INFO L131 PetriNetUnfolder]: For 51651/51770 co-relation queries the response was YES. [2023-09-01 08:37:17,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107544 conditions, 36363 events. 26237/36363 cut-off events. For 51651/51770 co-relation queries the response was YES. Maximal size of possible extension queue 2129. Compared 234542 event pairs, 6585 based on Foata normal form. 621/27016 useless extension candidates. Maximal degree in co-relation 107513. Up to 14316 conditions per place. [2023-09-01 08:37:17,932 INFO L137 encePairwiseOnDemand]: 732/745 looper letters, 176 selfloop transitions, 44 changer transitions 0/224 dead transitions. [2023-09-01 08:37:17,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 224 transitions, 1718 flow [2023-09-01 08:37:17,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 08:37:17,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 08:37:17,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2993 transitions. [2023-09-01 08:37:17,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3652226967663209 [2023-09-01 08:37:17,941 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2993 transitions. [2023-09-01 08:37:17,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2993 transitions. [2023-09-01 08:37:17,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:17,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2993 transitions. [2023-09-01 08:37:17,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 272.09090909090907) internal successors, (2993), 11 states have internal predecessors, (2993), 0 states have call successors, (0), 0 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 08:37:17,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 745.0) internal successors, (8940), 12 states have internal predecessors, (8940), 0 states have call successors, (0), 0 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 08:37:17,952 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 745.0) internal successors, (8940), 12 states have internal predecessors, (8940), 0 states have call successors, (0), 0 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 08:37:17,952 INFO L175 Difference]: Start difference. First operand has 125 places, 115 transitions, 933 flow. Second operand 11 states and 2993 transitions. [2023-09-01 08:37:17,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 224 transitions, 1718 flow [2023-09-01 08:37:18,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 224 transitions, 1675 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 08:37:18,060 INFO L231 Difference]: Finished difference. Result has 133 places, 122 transitions, 1090 flow [2023-09-01 08:37:18,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1090, PETRI_PLACES=133, PETRI_TRANSITIONS=122} [2023-09-01 08:37:18,061 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 65 predicate places. [2023-09-01 08:37:18,061 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 122 transitions, 1090 flow [2023-09-01 08:37:18,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 258.43333333333334) internal successors, (7753), 30 states have internal predecessors, (7753), 0 states have call successors, (0), 0 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 08:37:18,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:18,063 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:37:18,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-09-01 08:37:18,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:18,270 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:37:18,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:18,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1442119255, now seen corresponding path program 1 times [2023-09-01 08:37:18,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:18,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568284277] [2023-09-01 08:37:18,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:18,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:18,427 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:37:18,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:18,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568284277] [2023-09-01 08:37:18,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568284277] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:37:18,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975340874] [2023-09-01 08:37:18,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:18,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:18,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:18,429 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:37:18,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-09-01 08:37:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:18,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 08:37:18,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:37:18,714 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:37:18,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:37:18,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:37:18,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975340874] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:37:18,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:37:18,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-09-01 08:37:18,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880338277] [2023-09-01 08:37:18,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:37:18,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 08:37:18,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:18,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 08:37:18,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-09-01 08:37:19,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 745 [2023-09-01 08:37:19,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 122 transitions, 1090 flow. Second operand has 17 states, 17 states have (on average 301.5882352941176) internal successors, (5127), 17 states have internal predecessors, (5127), 0 states have call successors, (0), 0 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 08:37:19,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:19,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 745 [2023-09-01 08:37:19,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:23,369 INFO L130 PetriNetUnfolder]: 29928/41258 cut-off events. [2023-09-01 08:37:23,369 INFO L131 PetriNetUnfolder]: For 82689/82810 co-relation queries the response was YES. [2023-09-01 08:37:23,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131798 conditions, 41258 events. 29928/41258 cut-off events. For 82689/82810 co-relation queries the response was YES. Maximal size of possible extension queue 2100. Compared 263940 event pairs, 11058 based on Foata normal form. 3325/33395 useless extension candidates. Maximal degree in co-relation 131764. Up to 20196 conditions per place. [2023-09-01 08:37:23,682 INFO L137 encePairwiseOnDemand]: 730/745 looper letters, 347 selfloop transitions, 50 changer transitions 0/401 dead transitions. [2023-09-01 08:37:23,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 401 transitions, 2832 flow [2023-09-01 08:37:23,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-09-01 08:37:23,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-09-01 08:37:23,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5752 transitions. [2023-09-01 08:37:23,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42893363161819537 [2023-09-01 08:37:23,689 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5752 transitions. [2023-09-01 08:37:23,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5752 transitions. [2023-09-01 08:37:23,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:23,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5752 transitions. [2023-09-01 08:37:23,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 319.55555555555554) internal successors, (5752), 18 states have internal predecessors, (5752), 0 states have call successors, (0), 0 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 08:37:23,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 745.0) internal successors, (14155), 19 states have internal predecessors, (14155), 0 states have call successors, (0), 0 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 08:37:23,704 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 745.0) internal successors, (14155), 19 states have internal predecessors, (14155), 0 states have call successors, (0), 0 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 08:37:23,704 INFO L175 Difference]: Start difference. First operand has 133 places, 122 transitions, 1090 flow. Second operand 18 states and 5752 transitions. [2023-09-01 08:37:23,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 401 transitions, 2832 flow [2023-09-01 08:37:23,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 401 transitions, 2762 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-09-01 08:37:23,840 INFO L231 Difference]: Finished difference. Result has 149 places, 130 transitions, 1303 flow [2023-09-01 08:37:23,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1303, PETRI_PLACES=149, PETRI_TRANSITIONS=130} [2023-09-01 08:37:23,840 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 81 predicate places. [2023-09-01 08:37:23,840 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 130 transitions, 1303 flow [2023-09-01 08:37:23,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 301.5882352941176) internal successors, (5127), 17 states have internal predecessors, (5127), 0 states have call successors, (0), 0 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 08:37:23,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:23,841 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:37:23,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-09-01 08:37:24,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-09-01 08:37:24,042 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:37:24,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:24,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1442118296, now seen corresponding path program 1 times [2023-09-01 08:37:24,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:24,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389426646] [2023-09-01 08:37:24,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:24,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:25,087 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:37:25,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:25,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389426646] [2023-09-01 08:37:25,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389426646] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:37:25,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201611259] [2023-09-01 08:37:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:25,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:25,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:25,089 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:37:25,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-09-01 08:37:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:25,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 40 conjunts are in the unsatisfiable core [2023-09-01 08:37:25,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:37:25,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:37:25,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:37:25,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:37:25,350 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-09-01 08:37:25,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2023-09-01 08:37:25,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:37:25,527 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-09-01 08:37:25,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-09-01 08:37:25,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:37:25,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:37:25,660 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-09-01 08:37:25,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:37:25,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:37:25,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:37:25,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:37:25,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:37:25,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:37:25,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:37:25,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:37:25,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:37:26,001 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 08:37:26,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:37:26,136 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (* |c_thread2Thread1of1ForFork0_~i~1#1| 4))) (let ((.cse2 (+ c_~A~0.offset .cse3))) (and (forall ((v_ArrVal_1214 (Array Int Int)) (~B~0.offset Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1214))) (let ((.cse0 (select (select .cse1 c_~B~0.base) (+ .cse3 ~B~0.offset)))) (or (<= 0 (+ .cse0 (select (select .cse1 c_~A~0.base) .cse2) 2147483648)) (< .cse0 0) (< 0 .cse0))))) (forall ((v_ArrVal_1214 (Array Int Int)) (~B~0.offset Int)) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1214))) (let ((.cse4 (select (select .cse5 c_~B~0.base) (+ .cse3 ~B~0.offset)))) (or (<= .cse4 0) (<= 0 (+ .cse4 (select (select .cse5 c_~A~0.base) .cse2) 2147483648)) (< 4294967295 .cse4)))))))) is different from false [2023-09-01 08:37:29,459 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:29,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 321 treesize of output 238 [2023-09-01 08:37:29,835 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:29,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37882925 treesize of output 37588013 [2023-09-01 08:37:40,246 WARN L222 SmtUtils]: Spent 10.38s on a formula simplification. DAG size of input: 8170 DAG size of output: 811 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-09-01 08:37:40,289 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:40,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25503 treesize of output 23400 [2023-09-01 08:37:40,591 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:40,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23391 treesize of output 23200 [2023-09-01 08:37:40,903 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:40,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23191 treesize of output 22672 [2023-09-01 08:37:41,273 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:41,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22663 treesize of output 21616 [2023-09-01 08:37:41,591 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:41,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21607 treesize of output 21352 [2023-09-01 08:37:41,918 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:41,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21343 treesize of output 20296 [2023-09-01 08:37:42,243 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:42,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20287 treesize of output 20032 [2023-09-01 08:37:42,577 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:42,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20023 treesize of output 19504 [2023-09-01 08:37:42,932 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:42,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19495 treesize of output 19304 [2023-09-01 08:37:43,263 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:43,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19295 treesize of output 17192 [2023-09-01 08:43:19,782 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:43:19,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201611259] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:43:19,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:43:19,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 32 [2023-09-01 08:43:19,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913055888] [2023-09-01 08:43:19,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:43:19,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-09-01 08:43:19,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:43:19,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-09-01 08:43:19,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=875, Unknown=25, NotChecked=62, Total=1122 [2023-09-01 08:43:20,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 745 [2023-09-01 08:43:20,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 130 transitions, 1303 flow. Second operand has 34 states, 34 states have (on average 257.38235294117646) internal successors, (8751), 34 states have internal predecessors, (8751), 0 states have call successors, (0), 0 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 08:43:20,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:43:20,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 745 [2023-09-01 08:43:20,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:43:22,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:43:25,560 INFO L130 PetriNetUnfolder]: 27869/38604 cut-off events. [2023-09-01 08:43:25,560 INFO L131 PetriNetUnfolder]: For 78522/78698 co-relation queries the response was YES. [2023-09-01 08:43:25,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126981 conditions, 38604 events. 27869/38604 cut-off events. For 78522/78698 co-relation queries the response was YES. Maximal size of possible extension queue 1775. Compared 244259 event pairs, 9683 based on Foata normal form. 1026/29115 useless extension candidates. Maximal degree in co-relation 126942. Up to 21156 conditions per place. [2023-09-01 08:43:25,881 INFO L137 encePairwiseOnDemand]: 736/745 looper letters, 163 selfloop transitions, 34 changer transitions 0/201 dead transitions. [2023-09-01 08:43:25,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 201 transitions, 1906 flow [2023-09-01 08:43:25,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 08:43:25,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 08:43:25,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2429 transitions. [2023-09-01 08:43:25,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3622669649515287 [2023-09-01 08:43:25,884 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2429 transitions. [2023-09-01 08:43:25,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2429 transitions. [2023-09-01 08:43:25,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:43:25,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2429 transitions. [2023-09-01 08:43:25,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 269.8888888888889) internal successors, (2429), 9 states have internal predecessors, (2429), 0 states have call successors, (0), 0 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 08:43:25,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 745.0) internal successors, (7450), 10 states have internal predecessors, (7450), 0 states have call successors, (0), 0 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 08:43:25,889 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 745.0) internal successors, (7450), 10 states have internal predecessors, (7450), 0 states have call successors, (0), 0 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 08:43:25,889 INFO L175 Difference]: Start difference. First operand has 149 places, 130 transitions, 1303 flow. Second operand 9 states and 2429 transitions. [2023-09-01 08:43:25,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 201 transitions, 1906 flow [2023-09-01 08:43:27,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 201 transitions, 1869 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-09-01 08:43:27,547 INFO L231 Difference]: Finished difference. Result has 157 places, 129 transitions, 1356 flow [2023-09-01 08:43:27,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=1247, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1356, PETRI_PLACES=157, PETRI_TRANSITIONS=129} [2023-09-01 08:43:27,548 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 89 predicate places. [2023-09-01 08:43:27,548 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 129 transitions, 1356 flow [2023-09-01 08:43:27,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 257.38235294117646) internal successors, (8751), 34 states have internal predecessors, (8751), 0 states have call successors, (0), 0 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 08:43:27,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:43:27,549 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:43:27,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-09-01 08:43:27,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:43:27,750 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:43:27,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:43:27,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1442118297, now seen corresponding path program 1 times [2023-09-01 08:43:27,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:43:27,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859320453] [2023-09-01 08:43:27,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:43:27,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:43:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:43:28,513 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:43:28,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:43:28,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859320453] [2023-09-01 08:43:28,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859320453] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:43:28,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278773957] [2023-09-01 08:43:28,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:43:28,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:43:28,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:43:28,515 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:43:28,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-09-01 08:43:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:43:28,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 46 conjunts are in the unsatisfiable core [2023-09-01 08:43:28,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:43:28,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:43:28,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:43:28,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:43:28,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:43:28,744 INFO L321 Elim1Store]: treesize reduction 52, result has 29.7 percent of original size [2023-09-01 08:43:28,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 48 [2023-09-01 08:43:28,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:43:28,868 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-09-01 08:43:28,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-09-01 08:43:28,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:43:28,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:43:28,968 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:43:28,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:43:29,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:43:29,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:43:29,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:43:29,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:43:29,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:43:29,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:43:29,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:43:29,153 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:43:29,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:43:29,240 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1303 (Array Int Int)) (v_ArrVal_1302 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1302) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1303) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483648)) is different from false [2023-09-01 08:43:29,290 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1303 (Array Int Int)) (v_ArrVal_1302 (Array Int Int)) (v_ArrVal_1301 (Array Int Int)) (v_ArrVal_1300 (Array Int Int))) (< (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1300) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1301) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1302) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1303) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483648)) is different from false [2023-09-01 08:43:29,452 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:43:29,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2023-09-01 08:43:29,466 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:43:29,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17473 treesize of output 17281 [2023-09-01 08:43:29,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 263 treesize of output 247 [2023-09-01 08:43:29,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 247 treesize of output 215 [2023-09-01 08:43:29,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-09-01 08:43:29,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 211 treesize of output 203 [2023-09-01 08:43:29,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 266 treesize of output 202 [2023-09-01 08:43:30,083 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2023-09-01 08:43:30,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278773957] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:43:30,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:43:30,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 32 [2023-09-01 08:43:30,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580249849] [2023-09-01 08:43:30,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:43:30,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-09-01 08:43:30,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:43:30,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-09-01 08:43:30,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=824, Unknown=17, NotChecked=122, Total=1122 [2023-09-01 08:43:30,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 745 [2023-09-01 08:43:30,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 129 transitions, 1356 flow. Second operand has 34 states, 34 states have (on average 250.38235294117646) internal successors, (8513), 34 states have internal predecessors, (8513), 0 states have call successors, (0), 0 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 08:43:30,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:43:30,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 745 [2023-09-01 08:43:30,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:43:33,680 INFO L130 PetriNetUnfolder]: 25236/35111 cut-off events. [2023-09-01 08:43:33,681 INFO L131 PetriNetUnfolder]: For 77059/77232 co-relation queries the response was YES. [2023-09-01 08:43:33,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114789 conditions, 35111 events. 25236/35111 cut-off events. For 77059/77232 co-relation queries the response was YES. Maximal size of possible extension queue 1597. Compared 220611 event pairs, 9533 based on Foata normal form. 1023/26541 useless extension candidates. Maximal degree in co-relation 114748. Up to 20193 conditions per place. [2023-09-01 08:43:34,049 INFO L137 encePairwiseOnDemand]: 738/745 looper letters, 170 selfloop transitions, 25 changer transitions 0/199 dead transitions. [2023-09-01 08:43:34,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 199 transitions, 1938 flow [2023-09-01 08:43:34,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:43:34,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:43:34,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2116 transitions. [2023-09-01 08:43:34,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35503355704697986 [2023-09-01 08:43:34,052 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2116 transitions. [2023-09-01 08:43:34,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2116 transitions. [2023-09-01 08:43:34,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:43:34,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2116 transitions. [2023-09-01 08:43:34,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 264.5) internal successors, (2116), 8 states have internal predecessors, (2116), 0 states have call successors, (0), 0 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 08:43:34,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 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 08:43:34,058 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 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 08:43:34,059 INFO L175 Difference]: Start difference. First operand has 157 places, 129 transitions, 1356 flow. Second operand 8 states and 2116 transitions. [2023-09-01 08:43:34,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 199 transitions, 1938 flow [2023-09-01 08:43:35,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 199 transitions, 1893 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-09-01 08:43:35,384 INFO L231 Difference]: Finished difference. Result has 157 places, 127 transitions, 1337 flow [2023-09-01 08:43:35,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1337, PETRI_PLACES=157, PETRI_TRANSITIONS=127} [2023-09-01 08:43:35,385 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 89 predicate places. [2023-09-01 08:43:35,385 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 127 transitions, 1337 flow [2023-09-01 08:43:35,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 250.38235294117646) internal successors, (8513), 34 states have internal predecessors, (8513), 0 states have call successors, (0), 0 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 08:43:35,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:43:35,386 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:43:35,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-09-01 08:43:35,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:43:35,587 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:43:35,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:43:35,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1442118294, now seen corresponding path program 1 times [2023-09-01 08:43:35,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:43:35,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738985289] [2023-09-01 08:43:35,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:43:35,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:43:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:43:36,155 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 08:43:36,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:43:36,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738985289] [2023-09-01 08:43:36,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738985289] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:43:36,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606852973] [2023-09-01 08:43:36,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:43:36,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:43:36,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:43:36,157 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:43:36,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-09-01 08:43:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:43:36,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 40 conjunts are in the unsatisfiable core [2023-09-01 08:43:36,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:43:36,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 08:43:36,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:43:36,467 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:43:36,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:43:36,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:43:36,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:43:36,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:43:36,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:43:36,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:43:36,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:43:36,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:43:36,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:43:36,652 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:43:36,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:43:36,671 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1383 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1383) c_~B~0.base) (+ (* |c_thread2Thread1of1ForFork0_~i~1#1| 4) c_~B~0.offset)) 4294967296)) is different from false [2023-09-01 08:43:36,675 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1383 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1383) c_~B~0.base) (+ 4 c_~B~0.offset)) 4294967296)) is different from false [2023-09-01 08:43:36,829 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:43:36,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-09-01 08:43:36,838 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:43:36,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1097 treesize of output 1073 [2023-09-01 08:43:36,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 111 [2023-09-01 08:43:36,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 107 [2023-09-01 08:43:36,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 99 [2023-09-01 08:43:36,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 98 [2023-09-01 08:43:37,087 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:43:37,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 62 [2023-09-01 08:43:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 08:43:37,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606852973] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:43:37,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:43:37,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 30 [2023-09-01 08:43:37,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806801220] [2023-09-01 08:43:37,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:43:37,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-09-01 08:43:37,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:43:37,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-09-01 08:43:37,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=747, Unknown=13, NotChecked=114, Total=992 [2023-09-01 08:43:37,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 745 [2023-09-01 08:43:37,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 127 transitions, 1337 flow. Second operand has 32 states, 32 states have (on average 258.40625) internal successors, (8269), 32 states have internal predecessors, (8269), 0 states have call successors, (0), 0 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 08:43:37,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:43:37,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 745 [2023-09-01 08:43:37,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:43:41,455 INFO L130 PetriNetUnfolder]: 22545/31546 cut-off events. [2023-09-01 08:43:41,455 INFO L131 PetriNetUnfolder]: For 85749/85924 co-relation queries the response was YES. [2023-09-01 08:43:41,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104838 conditions, 31546 events. 22545/31546 cut-off events. For 85749/85924 co-relation queries the response was YES. Maximal size of possible extension queue 1556. Compared 198981 event pairs, 6726 based on Foata normal form. 1017/23905 useless extension candidates. Maximal degree in co-relation 104797. Up to 12723 conditions per place. [2023-09-01 08:43:41,639 INFO L137 encePairwiseOnDemand]: 732/745 looper letters, 174 selfloop transitions, 49 changer transitions 0/227 dead transitions. [2023-09-01 08:43:41,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 227 transitions, 2051 flow [2023-09-01 08:43:41,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 08:43:41,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 08:43:41,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2990 transitions. [2023-09-01 08:43:41,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3648566198901769 [2023-09-01 08:43:41,642 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2990 transitions. [2023-09-01 08:43:41,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2990 transitions. [2023-09-01 08:43:41,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:43:41,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2990 transitions. [2023-09-01 08:43:41,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 271.8181818181818) internal successors, (2990), 11 states have internal predecessors, (2990), 0 states have call successors, (0), 0 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 08:43:41,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 745.0) internal successors, (8940), 12 states have internal predecessors, (8940), 0 states have call successors, (0), 0 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 08:43:41,652 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 745.0) internal successors, (8940), 12 states have internal predecessors, (8940), 0 states have call successors, (0), 0 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 08:43:41,652 INFO L175 Difference]: Start difference. First operand has 157 places, 127 transitions, 1337 flow. Second operand 11 states and 2990 transitions. [2023-09-01 08:43:41,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 227 transitions, 2051 flow [2023-09-01 08:43:42,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 227 transitions, 1988 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-09-01 08:43:42,611 INFO L231 Difference]: Finished difference. Result has 160 places, 125 transitions, 1356 flow [2023-09-01 08:43:42,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1356, PETRI_PLACES=160, PETRI_TRANSITIONS=125} [2023-09-01 08:43:42,611 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 92 predicate places. [2023-09-01 08:43:42,611 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 125 transitions, 1356 flow [2023-09-01 08:43:42,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 258.40625) internal successors, (8269), 32 states have internal predecessors, (8269), 0 states have call successors, (0), 0 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 08:43:42,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:43:42,612 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:43:42,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-09-01 08:43:42,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:43:42,813 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:43:42,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:43:42,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1133776633, now seen corresponding path program 2 times [2023-09-01 08:43:42,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:43:42,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241349183] [2023-09-01 08:43:42,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:43:42,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:43:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:43:42,875 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-09-01 08:43:42,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:43:42,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241349183] [2023-09-01 08:43:42,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241349183] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:43:42,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:43:42,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:43:42,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850011281] [2023-09-01 08:43:42,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:43:42,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:43:42,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:43:42,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:43:42,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:43:42,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 745 [2023-09-01 08:43:42,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 125 transitions, 1356 flow. Second operand has 4 states, 4 states have (on average 321.25) internal successors, (1285), 4 states have internal predecessors, (1285), 0 states have call successors, (0), 0 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 08:43:42,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:43:42,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 745 [2023-09-01 08:43:42,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:43:48,716 INFO L130 PetriNetUnfolder]: 41416/57596 cut-off events. [2023-09-01 08:43:48,716 INFO L131 PetriNetUnfolder]: For 210235/219571 co-relation queries the response was YES. [2023-09-01 08:43:48,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189890 conditions, 57596 events. 41416/57596 cut-off events. For 210235/219571 co-relation queries the response was YES. Maximal size of possible extension queue 2143. Compared 377365 event pairs, 14196 based on Foata normal form. 8088/49181 useless extension candidates. Maximal degree in co-relation 189850. Up to 32698 conditions per place. [2023-09-01 08:43:49,126 INFO L137 encePairwiseOnDemand]: 740/745 looper letters, 215 selfloop transitions, 4 changer transitions 0/231 dead transitions. [2023-09-01 08:43:49,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 231 transitions, 2725 flow [2023-09-01 08:43:49,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:43:49,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:43:49,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1371 transitions. [2023-09-01 08:43:49,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46006711409395973 [2023-09-01 08:43:49,128 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1371 transitions. [2023-09-01 08:43:49,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1371 transitions. [2023-09-01 08:43:49,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:43:49,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1371 transitions. [2023-09-01 08:43:49,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 342.75) internal successors, (1371), 4 states have internal predecessors, (1371), 0 states have call successors, (0), 0 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 08:43:49,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 745.0) internal successors, (3725), 5 states have internal predecessors, (3725), 0 states have call successors, (0), 0 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 08:43:49,131 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 745.0) internal successors, (3725), 5 states have internal predecessors, (3725), 0 states have call successors, (0), 0 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 08:43:49,131 INFO L175 Difference]: Start difference. First operand has 160 places, 125 transitions, 1356 flow. Second operand 4 states and 1371 transitions. [2023-09-01 08:43:49,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 231 transitions, 2725 flow [2023-09-01 08:43:49,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 231 transitions, 2617 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-09-01 08:43:49,238 INFO L231 Difference]: Finished difference. Result has 157 places, 127 transitions, 1301 flow [2023-09-01 08:43:49,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=1276, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1301, PETRI_PLACES=157, PETRI_TRANSITIONS=127} [2023-09-01 08:43:49,239 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 89 predicate places. [2023-09-01 08:43:49,239 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 127 transitions, 1301 flow [2023-09-01 08:43:49,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 321.25) internal successors, (1285), 4 states have internal predecessors, (1285), 0 states have call successors, (0), 0 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 08:43:49,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:43:49,239 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:43:49,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-09-01 08:43:49,239 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:43:49,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:43:49,240 INFO L85 PathProgramCache]: Analyzing trace with hash 802207339, now seen corresponding path program 1 times [2023-09-01 08:43:49,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:43:49,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667320612] [2023-09-01 08:43:49,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:43:49,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:43:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:43:49,291 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:43:49,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:43:49,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667320612] [2023-09-01 08:43:49,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667320612] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:43:49,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042535002] [2023-09-01 08:43:49,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:43:49,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:43:49,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:43:49,297 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:43:49,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-09-01 08:43:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:43:49,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:43:49,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:43:49,544 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:43:49,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:43:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:43:49,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042535002] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:43:49,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:43:49,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2023-09-01 08:43:49,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693146700] [2023-09-01 08:43:49,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:43:49,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 08:43:49,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:43:49,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 08:43:49,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-09-01 08:43:49,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 745 [2023-09-01 08:43:49,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 127 transitions, 1301 flow. Second operand has 11 states, 11 states have (on average 303.54545454545456) internal successors, (3339), 11 states have internal predecessors, (3339), 0 states have call successors, (0), 0 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 08:43:49,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:43:49,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 745 [2023-09-01 08:43:49,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:43:56,424 INFO L130 PetriNetUnfolder]: 44040/61941 cut-off events. [2023-09-01 08:43:56,424 INFO L131 PetriNetUnfolder]: For 214063/225501 co-relation queries the response was YES. [2023-09-01 08:43:56,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209664 conditions, 61941 events. 44040/61941 cut-off events. For 214063/225501 co-relation queries the response was YES. Maximal size of possible extension queue 2155. Compared 416980 event pairs, 9950 based on Foata normal form. 9040/55233 useless extension candidates. Maximal degree in co-relation 209624. Up to 22041 conditions per place. [2023-09-01 08:43:56,957 INFO L137 encePairwiseOnDemand]: 731/745 looper letters, 262 selfloop transitions, 37 changer transitions 0/313 dead transitions. [2023-09-01 08:43:56,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 313 transitions, 3011 flow [2023-09-01 08:43:56,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:43:56,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:43:56,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3805 transitions. [2023-09-01 08:43:56,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4256152125279642 [2023-09-01 08:43:56,961 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3805 transitions. [2023-09-01 08:43:56,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3805 transitions. [2023-09-01 08:43:56,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:43:56,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3805 transitions. [2023-09-01 08:43:56,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 317.0833333333333) internal successors, (3805), 12 states have internal predecessors, (3805), 0 states have call successors, (0), 0 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 08:43:56,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 745.0) internal successors, (9685), 13 states have internal predecessors, (9685), 0 states have call successors, (0), 0 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 08:43:56,970 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 745.0) internal successors, (9685), 13 states have internal predecessors, (9685), 0 states have call successors, (0), 0 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 08:43:56,970 INFO L175 Difference]: Start difference. First operand has 157 places, 127 transitions, 1301 flow. Second operand 12 states and 3805 transitions. [2023-09-01 08:43:56,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 313 transitions, 3011 flow [2023-09-01 08:43:57,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 313 transitions, 3003 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:43:57,158 INFO L231 Difference]: Finished difference. Result has 170 places, 133 transitions, 1426 flow [2023-09-01 08:43:57,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1426, PETRI_PLACES=170, PETRI_TRANSITIONS=133} [2023-09-01 08:43:57,159 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 102 predicate places. [2023-09-01 08:43:57,159 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 133 transitions, 1426 flow [2023-09-01 08:43:57,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 303.54545454545456) internal successors, (3339), 11 states have internal predecessors, (3339), 0 states have call successors, (0), 0 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 08:43:57,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:43:57,160 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:43:57,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-09-01 08:43:57,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-09-01 08:43:57,361 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:43:57,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:43:57,361 INFO L85 PathProgramCache]: Analyzing trace with hash 831611111, now seen corresponding path program 1 times [2023-09-01 08:43:57,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:43:57,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525690483] [2023-09-01 08:43:57,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:43:57,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:43:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:43:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-09-01 08:43:57,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:43:57,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525690483] [2023-09-01 08:43:57,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525690483] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:43:57,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381263502] [2023-09-01 08:43:57,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:43:57,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:43:57,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:43:57,451 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:43:57,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-09-01 08:43:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:43:57,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 08:43:57,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:43:57,783 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-09-01 08:43:57,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:43:57,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381263502] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:43:57,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:43:57,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 08:43:57,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393496130] [2023-09-01 08:43:57,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:43:57,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:43:57,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:43:57,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:43:57,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:43:57,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 745 [2023-09-01 08:43:57,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 133 transitions, 1426 flow. Second operand has 4 states, 4 states have (on average 325.25) internal successors, (1301), 4 states have internal predecessors, (1301), 0 states have call successors, (0), 0 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 08:43:57,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:43:57,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 745 [2023-09-01 08:43:57,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:44:03,768 INFO L130 PetriNetUnfolder]: 43683/60605 cut-off events. [2023-09-01 08:44:03,768 INFO L131 PetriNetUnfolder]: For 154148/156256 co-relation queries the response was YES. [2023-09-01 08:44:04,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225635 conditions, 60605 events. 43683/60605 cut-off events. For 154148/156256 co-relation queries the response was YES. Maximal size of possible extension queue 2053. Compared 391832 event pairs, 5832 based on Foata normal form. 1949/52893 useless extension candidates. Maximal degree in co-relation 225591. Up to 37870 conditions per place. [2023-09-01 08:44:04,456 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 171 selfloop transitions, 17 changer transitions 0/193 dead transitions. [2023-09-01 08:44:04,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 193 transitions, 2037 flow [2023-09-01 08:44:04,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:44:04,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:44:04,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1379 transitions. [2023-09-01 08:44:04,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.462751677852349 [2023-09-01 08:44:04,458 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1379 transitions. [2023-09-01 08:44:04,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1379 transitions. [2023-09-01 08:44:04,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:44:04,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1379 transitions. [2023-09-01 08:44:04,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 344.75) internal successors, (1379), 4 states have internal predecessors, (1379), 0 states have call successors, (0), 0 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 08:44:04,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 745.0) internal successors, (3725), 5 states have internal predecessors, (3725), 0 states have call successors, (0), 0 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 08:44:04,462 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 745.0) internal successors, (3725), 5 states have internal predecessors, (3725), 0 states have call successors, (0), 0 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 08:44:04,462 INFO L175 Difference]: Start difference. First operand has 170 places, 133 transitions, 1426 flow. Second operand 4 states and 1379 transitions. [2023-09-01 08:44:04,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 193 transitions, 2037 flow [2023-09-01 08:44:05,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 193 transitions, 1994 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 08:44:05,179 INFO L231 Difference]: Finished difference. Result has 168 places, 130 transitions, 1376 flow [2023-09-01 08:44:05,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1376, PETRI_PLACES=168, PETRI_TRANSITIONS=130} [2023-09-01 08:44:05,180 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 100 predicate places. [2023-09-01 08:44:05,180 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 130 transitions, 1376 flow [2023-09-01 08:44:05,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 325.25) internal successors, (1301), 4 states have internal predecessors, (1301), 0 states have call successors, (0), 0 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 08:44:05,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:44:05,181 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:44:05,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-09-01 08:44:05,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-09-01 08:44:05,388 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:44:05,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:44:05,389 INFO L85 PathProgramCache]: Analyzing trace with hash 831611107, now seen corresponding path program 2 times [2023-09-01 08:44:05,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:44:05,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054022545] [2023-09-01 08:44:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:44:05,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:44:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:44:06,350 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:44:06,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:44:06,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054022545] [2023-09-01 08:44:06,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054022545] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:44:06,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039572481] [2023-09-01 08:44:06,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:44:06,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:44:06,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:44:06,352 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:44:06,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-09-01 08:44:06,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 08:44:06,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:44:06,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 50 conjunts are in the unsatisfiable core [2023-09-01 08:44:06,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:44:06,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 08:44:06,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:44:06,790 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:44:06,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:44:06,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:44:06,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:44:06,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:44:06,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:44:06,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:44:06,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:44:06,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:44:07,194 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-09-01 08:44:07,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 172 treesize of output 175 [2023-09-01 08:44:07,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-09-01 08:44:07,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-09-01 08:44:07,360 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-09-01 08:44:07,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:44:08,155 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 8 c_~B~0.offset)) (.cse4 (+ 4 c_~B~0.offset))) (and (forall ((v_ArrVal_1656 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1656))) (let ((.cse0 (select (select .cse2 c_~B~0.base) .cse4))) (or (forall ((~A~0.offset Int) (~A~0.base Int)) (let ((.cse1 (select (select .cse2 ~A~0.base) (+ ~A~0.offset 4)))) (or (< 2147483647 (+ .cse0 .cse1)) (< (+ .cse0 .cse1 2147483648) 0)))) (forall ((v_ArrVal_1657 (Array Int Int))) (< (select (select (store .cse2 c_~C~0.base v_ArrVal_1657) c_~B~0.base) .cse3) 4294967296)) (< 4294967295 .cse0) (<= .cse0 0))))) (forall ((v_ArrVal_1656 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1656))) (let ((.cse5 (select (select .cse7 c_~B~0.base) .cse4))) (or (forall ((~A~0.offset Int) (~A~0.base Int)) (let ((.cse6 (select (select .cse7 ~A~0.base) (+ ~A~0.offset 4)))) (or (< 2147483647 (+ .cse5 .cse6)) (< (+ .cse5 .cse6 2147483648) 0)))) (< 0 .cse5) (< (+ 9223372039002259455 .cse5) 0) (forall ((v_ArrVal_1657 (Array Int Int))) (< (select (select (store .cse7 c_~C~0.base v_ArrVal_1657) c_~B~0.base) .cse3) 4294967296)))))))) is different from false [2023-09-01 08:44:08,448 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 8 c_~B~0.offset)) (.cse4 (+ 4 c_~B~0.offset))) (and (forall ((v_ArrVal_1656 (Array Int Int)) (v_ArrVal_1655 (Array Int Int)) (v_ArrVal_1654 (Array Int Int))) (let ((.cse2 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1654) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1656))) (let ((.cse1 (select (select .cse2 c_~B~0.base) .cse4))) (or (forall ((~A~0.offset Int) (~A~0.base Int)) (let ((.cse0 (select (select .cse2 ~A~0.base) (+ ~A~0.offset 4)))) (or (< (+ .cse0 .cse1 2147483648) 0) (< 2147483647 (+ .cse0 .cse1))))) (forall ((v_ArrVal_1657 (Array Int Int))) (< (select (select (store .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1657) c_~B~0.base) .cse3) 4294967296)) (< (+ 9223372039002259455 .cse1) 0) (< 0 .cse1))))) (forall ((v_ArrVal_1656 (Array Int Int)) (v_ArrVal_1655 (Array Int Int)) (v_ArrVal_1654 (Array Int Int))) (let ((.cse7 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1654) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1656))) (let ((.cse6 (select (select .cse7 c_~B~0.base) .cse4))) (or (forall ((~A~0.offset Int) (~A~0.base Int)) (let ((.cse5 (select (select .cse7 ~A~0.base) (+ ~A~0.offset 4)))) (or (< (+ .cse5 .cse6 2147483648) 0) (< 2147483647 (+ .cse5 .cse6))))) (forall ((v_ArrVal_1657 (Array Int Int))) (< (select (select (store .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1657) c_~B~0.base) .cse3) 4294967296)) (<= .cse6 0) (< 4294967295 .cse6))))))) is different from false [2023-09-01 08:44:08,829 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:44:08,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 441 treesize of output 286 [2023-09-01 08:44:08,971 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:44:08,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 41757 treesize of output 39410 [2023-09-01 08:44:09,936 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:44:09,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 6473 treesize of output 6216 [2023-09-01 08:44:10,047 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:44:10,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6197 treesize of output 6070 [2023-09-01 08:44:10,167 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:44:10,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 6061 treesize of output 5528 [2023-09-01 08:44:10,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5509 treesize of output 5493 [2023-09-01 08:44:10,401 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:44:10,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 5493 treesize of output 4960 [2023-09-01 08:44:10,548 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:44:10,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4941 treesize of output 4814 [2023-09-01 08:44:10,679 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:44:10,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 4805 treesize of output 4548 [2023-09-01 08:44:10,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4529 treesize of output 4513 Killed by 15