./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 --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 07:40:27,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:40:27,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:40:27,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:40:27,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:40:27,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:40:27,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:40:27,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:40:27,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:40:27,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:40:27,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:40:27,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:40:27,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:40:27,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:40:27,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:40:27,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:40:27,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:40:27,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:40:27,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:40:27,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:40:27,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:40:27,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:40:27,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:40:27,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:40:27,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:40:27,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:40:27,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:40:27,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:40:27,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:40:27,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:40:27,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:40:27,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:40:27,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:40:27,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:40:27,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:40:27,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:40:27,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:40:27,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:40:27,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:40:27,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:40:27,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:40:27,266 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:40:27,305 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:40:27,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:40:27,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:40:27,307 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:40:27,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:40:27,308 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:40:27,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:40:27,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:40:27,309 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:40:27,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:40:27,310 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:40:27,310 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:40:27,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:40:27,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:40:27,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:40:27,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:40:27,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:40:27,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:40:27,311 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:40:27,312 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:40:27,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:40:27,312 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:40:27,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:40:27,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:40:27,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:40:27,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:40:27,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:40:27,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:40:27,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:40:27,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:40:27,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:40:27,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:40:27,314 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:40:27,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:40:27,315 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:40:27,315 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:40:27,315 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:40:27,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:40:27,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:40:27,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:40:27,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:40:27,641 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:40:27,641 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:40:27,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c [2023-09-01 07:40:28,813 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:40:29,051 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:40:29,052 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c [2023-09-01 07:40:29,063 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a73e3e91/6eab9aaeb71c47c0af06c1e20eabbf80/FLAG829f3b0fa [2023-09-01 07:40:29,088 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a73e3e91/6eab9aaeb71c47c0af06c1e20eabbf80 [2023-09-01 07:40:29,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:40:29,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:40:29,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:40:29,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:40:29,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:40:29,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:40:29" (1/1) ... [2023-09-01 07:40:29,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ae8941f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:40:29, skipping insertion in model container [2023-09-01 07:40:29,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:40:29" (1/1) ... [2023-09-01 07:40:29,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:40:29,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:40:29,320 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/loop-tiling-eq.wvr.c[2618,2631] [2023-09-01 07:40:29,332 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:40:29,343 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:40:29,382 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/loop-tiling-eq.wvr.c[2618,2631] [2023-09-01 07:40:29,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:40:29,405 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:40:29,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:40:29 WrapperNode [2023-09-01 07:40:29,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:40:29,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:40:29,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:40:29,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:40:29,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:40:29" (1/1) ... [2023-09-01 07:40:29,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:40:29" (1/1) ... [2023-09-01 07:40:29,457 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 213 [2023-09-01 07:40:29,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:40:29,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:40:29,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:40:29,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:40:29,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:40:29" (1/1) ... [2023-09-01 07:40:29,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:40:29" (1/1) ... [2023-09-01 07:40:29,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:40:29" (1/1) ... [2023-09-01 07:40:29,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:40:29" (1/1) ... [2023-09-01 07:40:29,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:40:29" (1/1) ... [2023-09-01 07:40:29,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:40:29" (1/1) ... [2023-09-01 07:40:29,481 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:40:29" (1/1) ... [2023-09-01 07:40:29,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:40:29" (1/1) ... [2023-09-01 07:40:29,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:40:29,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:40:29,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:40:29,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:40:29,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:40:29" (1/1) ... [2023-09-01 07:40:29,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:40:29,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:40:29,522 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 07:40:29,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:40:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 07:40:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:40:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:40:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:40:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-09-01 07:40:29,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:40:29,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:40:29,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:40:29,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:40:29,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:40:29,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:40:29,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:40:29,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:40:29,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:40:29,583 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 07:40:29,565 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 07:40:29,685 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:40:29,687 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:40:30,259 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:40:30,275 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:40:30,275 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-09-01 07:40:30,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:40:30 BoogieIcfgContainer [2023-09-01 07:40:30,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:40:30,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:40:30,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:40:30,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:40:30,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:40:29" (1/3) ... [2023-09-01 07:40:30,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b52700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:40:30, skipping insertion in model container [2023-09-01 07:40:30,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:40:29" (2/3) ... [2023-09-01 07:40:30,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b52700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:40:30, skipping insertion in model container [2023-09-01 07:40:30,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:40:30" (3/3) ... [2023-09-01 07:40:30,288 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2023-09-01 07:40:30,295 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:40:30,304 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:40:30,304 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-09-01 07:40:30,304 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:40:30,430 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 07:40:30,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 313 transitions, 642 flow [2023-09-01 07:40:30,608 INFO L130 PetriNetUnfolder]: 27/311 cut-off events. [2023-09-01 07:40:30,615 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 07:40:30,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 311 events. 27/311 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 467 event pairs, 0 based on Foata normal form. 0/258 useless extension candidates. Maximal degree in co-relation 224. Up to 2 conditions per place. [2023-09-01 07:40:30,623 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 313 transitions, 642 flow [2023-09-01 07:40:30,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 271 places, 290 transitions, 592 flow [2023-09-01 07:40:30,639 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:40:30,653 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 271 places, 290 transitions, 592 flow [2023-09-01 07:40:30,657 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 271 places, 290 transitions, 592 flow [2023-09-01 07:40:30,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 290 transitions, 592 flow [2023-09-01 07:40:30,724 INFO L130 PetriNetUnfolder]: 26/290 cut-off events. [2023-09-01 07:40:30,724 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 07:40:30,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 290 events. 26/290 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 464 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 224. Up to 2 conditions per place. [2023-09-01 07:40:30,730 INFO L119 LiptonReduction]: Number of co-enabled transitions 1916 [2023-09-01 07:40:52,017 INFO L134 LiptonReduction]: Checked pairs total: 3958 [2023-09-01 07:40:52,017 INFO L136 LiptonReduction]: Total number of compositions: 349 [2023-09-01 07:40:52,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:40:52,035 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;@cd116e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:40:52,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-09-01 07:40:52,038 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 07:40:52,038 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:40:52,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:52,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 07:40:52,039 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:40:52,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:52,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1179, now seen corresponding path program 1 times [2023-09-01 07:40:52,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:52,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209043687] [2023-09-01 07:40:52,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:52,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:52,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:52,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:52,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209043687] [2023-09-01 07:40:52,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209043687] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:52,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:40:52,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 07:40:52,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969729730] [2023-09-01 07:40:52,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:52,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 07:40:52,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:52,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 07:40:52,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 07:40:52,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 662 [2023-09-01 07:40:52,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 118 flow. Second operand has 2 states, 2 states have (on average 289.5) internal successors, (579), 2 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:52,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:52,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 662 [2023-09-01 07:40:52,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:52,365 INFO L130 PetriNetUnfolder]: 342/566 cut-off events. [2023-09-01 07:40:52,366 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-09-01 07:40:52,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1161 conditions, 566 events. 342/566 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2438 event pairs, 240 based on Foata normal form. 0/285 useless extension candidates. Maximal degree in co-relation 978. Up to 563 conditions per place. [2023-09-01 07:40:52,373 INFO L137 encePairwiseOnDemand]: 656/662 looper letters, 45 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2023-09-01 07:40:52,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 47 transitions, 196 flow [2023-09-01 07:40:52,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 07:40:52,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 07:40:52,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 629 transitions. [2023-09-01 07:40:52,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47507552870090636 [2023-09-01 07:40:52,418 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 629 transitions. [2023-09-01 07:40:52,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 629 transitions. [2023-09-01 07:40:52,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:52,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 629 transitions. [2023-09-01 07:40:52,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 314.5) internal successors, (629), 2 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:52,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 662.0) internal successors, (1986), 3 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:52,438 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 662.0) internal successors, (1986), 3 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:52,439 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 118 flow. Second operand 2 states and 629 transitions. [2023-09-01 07:40:52,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 47 transitions, 196 flow [2023-09-01 07:40:52,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 47 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 07:40:52,444 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 98 flow [2023-09-01 07:40:52,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2023-09-01 07:40:52,449 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2023-09-01 07:40:52,449 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 98 flow [2023-09-01 07:40:52,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 289.5) internal successors, (579), 2 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:52,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:52,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:40:52,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:40:52,454 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:40:52,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:52,462 INFO L85 PathProgramCache]: Analyzing trace with hash 37554, now seen corresponding path program 1 times [2023-09-01 07:40:52,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:52,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739082839] [2023-09-01 07:40:52,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:52,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:52,485 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:40:52,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1693639318] [2023-09-01 07:40:52,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:52,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:40:52,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:40:52,497 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 07:40:52,528 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 07:40:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:52,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 07:40:52,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:40:52,623 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 07:40:52,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:40:52,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:52,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739082839] [2023-09-01 07:40:52,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:40:52,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693639318] [2023-09-01 07:40:52,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693639318] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:52,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:40:52,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:40:52,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320270723] [2023-09-01 07:40:52,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:52,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:40:52,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:52,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:40:52,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:40:52,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-09-01 07:40:52,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 280.6666666666667) internal successors, (842), 3 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:52,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:52,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-09-01 07:40:52,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:52,806 INFO L130 PetriNetUnfolder]: 342/563 cut-off events. [2023-09-01 07:40:52,806 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-09-01 07:40:52,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 563 events. 342/563 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2454 event pairs, 240 based on Foata normal form. 0/285 useless extension candidates. Maximal degree in co-relation 1129. Up to 559 conditions per place. [2023-09-01 07:40:52,811 INFO L137 encePairwiseOnDemand]: 658/662 looper letters, 41 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-09-01 07:40:52,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 176 flow [2023-09-01 07:40:52,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:40:52,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:40:52,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 885 transitions. [2023-09-01 07:40:52,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44561933534743203 [2023-09-01 07:40:52,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 885 transitions. [2023-09-01 07:40:52,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 885 transitions. [2023-09-01 07:40:52,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:52,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 885 transitions. [2023-09-01 07:40:52,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 295.0) internal successors, (885), 3 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:52,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:52,824 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:52,825 INFO L175 Difference]: Start difference. First operand has 44 places, 47 transitions, 98 flow. Second operand 3 states and 885 transitions. [2023-09-01 07:40:52,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 176 flow [2023-09-01 07:40:52,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 176 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 07:40:52,827 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 94 flow [2023-09-01 07:40:52,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2023-09-01 07:40:52,828 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2023-09-01 07:40:52,828 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 94 flow [2023-09-01 07:40:52,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 280.6666666666667) internal successors, (842), 3 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:52,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:52,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:40:52,842 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 07:40:53,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:40:53,040 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:40:53,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:53,040 INFO L85 PathProgramCache]: Analyzing trace with hash 37555, now seen corresponding path program 1 times [2023-09-01 07:40:53,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:53,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435644680] [2023-09-01 07:40:53,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:53,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:53,067 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:40:53,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704888839] [2023-09-01 07:40:53,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:53,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:40:53,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:40:53,069 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 07:40:53,083 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 07:40:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:53,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 07:40:53,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:40:53,156 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 07:40:53,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:40:53,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:53,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435644680] [2023-09-01 07:40:53,157 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:40:53,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704888839] [2023-09-01 07:40:53,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704888839] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:53,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:40:53,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:40:53,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246067364] [2023-09-01 07:40:53,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:53,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:40:53,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:53,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:40:53,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:40:53,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-09-01 07:40:53,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 280.6666666666667) internal successors, (842), 3 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:53,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:53,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-09-01 07:40:53,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:53,406 INFO L130 PetriNetUnfolder]: 683/1122 cut-off events. [2023-09-01 07:40:53,406 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-09-01 07:40:53,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2255 conditions, 1122 events. 683/1122 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 5747 event pairs, 480 based on Foata normal form. 0/570 useless extension candidates. Maximal degree in co-relation 2251. Up to 560 conditions per place. [2023-09-01 07:40:53,414 INFO L137 encePairwiseOnDemand]: 653/662 looper letters, 74 selfloop transitions, 6 changer transitions 0/82 dead transitions. [2023-09-01 07:40:53,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 82 transitions, 334 flow [2023-09-01 07:40:53,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:40:53,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:40:53,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 923 transitions. [2023-09-01 07:40:53,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4647532729103726 [2023-09-01 07:40:53,417 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 923 transitions. [2023-09-01 07:40:53,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 923 transitions. [2023-09-01 07:40:53,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:53,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 923 transitions. [2023-09-01 07:40:53,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 307.6666666666667) internal successors, (923), 3 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:53,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:53,424 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:53,425 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 94 flow. Second operand 3 states and 923 transitions. [2023-09-01 07:40:53,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 82 transitions, 334 flow [2023-09-01 07:40:53,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 82 transitions, 333 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:40:53,428 INFO L231 Difference]: Finished difference. Result has 46 places, 49 transitions, 143 flow [2023-09-01 07:40:53,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=46, PETRI_TRANSITIONS=49} [2023-09-01 07:40:53,430 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -7 predicate places. [2023-09-01 07:40:53,430 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 49 transitions, 143 flow [2023-09-01 07:40:53,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 280.6666666666667) internal successors, (842), 3 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:53,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:53,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:40:53,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 07:40:53,639 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,SelfDestructingSolverStorable2 [2023-09-01 07:40:53,640 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:40:53,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:53,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1165738, now seen corresponding path program 1 times [2023-09-01 07:40:53,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:53,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997871714] [2023-09-01 07:40:53,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:53,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:53,651 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:40:53,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088342677] [2023-09-01 07:40:53,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:53,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:40:53,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:40:53,653 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 07:40:53,669 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 07:40:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:53,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:40:53,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:40:53,767 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 07:40:53,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:40:53,784 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 07:40:53,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:53,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997871714] [2023-09-01 07:40:53,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:40:53,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088342677] [2023-09-01 07:40:53,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088342677] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:40:53,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 07:40:53,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-09-01 07:40:53,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537432134] [2023-09-01 07:40:53,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 07:40:53,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 07:40:53,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:53,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 07:40:53,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-09-01 07:40:53,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-09-01 07:40:53,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 49 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:53,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:53,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-09-01 07:40:53,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:54,408 INFO L130 PetriNetUnfolder]: 1706/2799 cut-off events. [2023-09-01 07:40:54,409 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2023-09-01 07:40:54,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5660 conditions, 2799 events. 1706/2799 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 16834 event pairs, 1200 based on Foata normal form. 0/1445 useless extension candidates. Maximal degree in co-relation 5655. Up to 561 conditions per place. [2023-09-01 07:40:54,426 INFO L137 encePairwiseOnDemand]: 653/662 looper letters, 173 selfloop transitions, 21 changer transitions 0/196 dead transitions. [2023-09-01 07:40:54,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 196 transitions, 883 flow [2023-09-01 07:40:54,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:40:54,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:40:54,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1883 transitions. [2023-09-01 07:40:54,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4740684793554884 [2023-09-01 07:40:54,432 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1883 transitions. [2023-09-01 07:40:54,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1883 transitions. [2023-09-01 07:40:54,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:54,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1883 transitions. [2023-09-01 07:40:54,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 313.8333333333333) internal successors, (1883), 6 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:54,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 662.0) internal successors, (4634), 7 states have internal predecessors, (4634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:54,445 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 662.0) internal successors, (4634), 7 states have internal predecessors, (4634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:54,445 INFO L175 Difference]: Start difference. First operand has 46 places, 49 transitions, 143 flow. Second operand 6 states and 1883 transitions. [2023-09-01 07:40:54,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 196 transitions, 883 flow [2023-09-01 07:40:54,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 196 transitions, 859 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:40:54,452 INFO L231 Difference]: Finished difference. Result has 52 places, 64 transitions, 281 flow [2023-09-01 07:40:54,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=281, PETRI_PLACES=52, PETRI_TRANSITIONS=64} [2023-09-01 07:40:54,453 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -1 predicate places. [2023-09-01 07:40:54,453 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 64 transitions, 281 flow [2023-09-01 07:40:54,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:54,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:54,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 07:40:54,463 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 07:40:54,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:40:54,661 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:40:54,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:54,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1121067790, now seen corresponding path program 1 times [2023-09-01 07:40:54,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:54,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516091750] [2023-09-01 07:40:54,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:54,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:54,676 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:40:54,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567534755] [2023-09-01 07:40:54,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:54,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:40:54,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:40:54,678 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 07:40:54,726 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 07:40:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:54,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 07:40:54,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:40:54,797 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 07:40:54,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:40:54,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:54,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516091750] [2023-09-01 07:40:54,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:40:54,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567534755] [2023-09-01 07:40:54,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567534755] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:54,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:40:54,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:40:54,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385834673] [2023-09-01 07:40:54,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:54,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:40:54,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:54,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:40:54,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:40:54,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 662 [2023-09-01 07:40:54,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 64 transitions, 281 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:54,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:54,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 662 [2023-09-01 07:40:54,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:55,124 INFO L130 PetriNetUnfolder]: 1706/2794 cut-off events. [2023-09-01 07:40:55,125 INFO L131 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2023-09-01 07:40:55,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5689 conditions, 2794 events. 1706/2794 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 16801 event pairs, 1200 based on Foata normal form. 0/1442 useless extension candidates. Maximal degree in co-relation 5681. Up to 2756 conditions per place. [2023-09-01 07:40:55,139 INFO L137 encePairwiseOnDemand]: 660/662 looper letters, 60 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2023-09-01 07:40:55,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 401 flow [2023-09-01 07:40:55,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:40:55,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:40:55,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 900 transitions. [2023-09-01 07:40:55,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45317220543806647 [2023-09-01 07:40:55,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 900 transitions. [2023-09-01 07:40:55,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 900 transitions. [2023-09-01 07:40:55,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:55,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 900 transitions. [2023-09-01 07:40:55,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:55,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:55,150 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:55,150 INFO L175 Difference]: Start difference. First operand has 52 places, 64 transitions, 281 flow. Second operand 3 states and 900 transitions. [2023-09-01 07:40:55,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 401 flow [2023-09-01 07:40:55,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 63 transitions, 371 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-09-01 07:40:55,153 INFO L231 Difference]: Finished difference. Result has 52 places, 63 transitions, 251 flow [2023-09-01 07:40:55,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=251, PETRI_PLACES=52, PETRI_TRANSITIONS=63} [2023-09-01 07:40:55,154 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -1 predicate places. [2023-09-01 07:40:55,154 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 63 transitions, 251 flow [2023-09-01 07:40:55,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:55,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:55,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 07:40:55,163 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 07:40:55,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:40:55,361 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:40:55,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:55,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1121067815, now seen corresponding path program 1 times [2023-09-01 07:40:55,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:55,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759645743] [2023-09-01 07:40:55,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:55,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:55,373 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:40:55,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1562856465] [2023-09-01 07:40:55,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:55,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:40:55,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:40:55,375 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 07:40:55,377 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 07:40:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:55,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 07:40:55,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:40:55,464 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 07:40:55,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:40:55,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:55,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759645743] [2023-09-01 07:40:55,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:40:55,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562856465] [2023-09-01 07:40:55,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562856465] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:55,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:40:55,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:40:55,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538004875] [2023-09-01 07:40:55,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:55,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:40:55,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:55,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:40:55,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:40:55,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 662 [2023-09-01 07:40:55,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 63 transitions, 251 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:55,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:55,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 662 [2023-09-01 07:40:55,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:56,062 INFO L130 PetriNetUnfolder]: 3401/5560 cut-off events. [2023-09-01 07:40:56,062 INFO L131 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2023-09-01 07:40:56,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11246 conditions, 5560 events. 3401/5560 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 36943 event pairs, 2400 based on Foata normal form. 0/2869 useless extension candidates. Maximal degree in co-relation 11237. Up to 2775 conditions per place. [2023-09-01 07:40:56,096 INFO L137 encePairwiseOnDemand]: 659/662 looper letters, 100 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2023-09-01 07:40:56,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 104 transitions, 585 flow [2023-09-01 07:40:56,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:40:56,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:40:56,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 933 transitions. [2023-09-01 07:40:56,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697885196374622 [2023-09-01 07:40:56,103 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 933 transitions. [2023-09-01 07:40:56,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 933 transitions. [2023-09-01 07:40:56,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:56,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 933 transitions. [2023-09-01 07:40:56,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.0) internal successors, (933), 3 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:56,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:56,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:56,112 INFO L175 Difference]: Start difference. First operand has 52 places, 63 transitions, 251 flow. Second operand 3 states and 933 transitions. [2023-09-01 07:40:56,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 104 transitions, 585 flow [2023-09-01 07:40:56,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 104 transitions, 584 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:40:56,118 INFO L231 Difference]: Finished difference. Result has 54 places, 64 transitions, 262 flow [2023-09-01 07:40:56,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=54, PETRI_TRANSITIONS=64} [2023-09-01 07:40:56,121 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2023-09-01 07:40:56,122 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 64 transitions, 262 flow [2023-09-01 07:40:56,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:56,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:56,123 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 07:40:56,132 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 07:40:56,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:40:56,333 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:40:56,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:56,334 INFO L85 PathProgramCache]: Analyzing trace with hash 370284659, now seen corresponding path program 2 times [2023-09-01 07:40:56,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:56,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941843062] [2023-09-01 07:40:56,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:56,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:56,347 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:40:56,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1955820808] [2023-09-01 07:40:56,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:40:56,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:40:56,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:40:56,349 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 07:40:56,352 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 07:40:56,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:40:56,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:40:56,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 07:40:56,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:40:57,202 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 07:40:57,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:40:57,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:57,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941843062] [2023-09-01 07:40:57,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:40:57,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955820808] [2023-09-01 07:40:57,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955820808] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:57,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:40:57,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:40:57,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629139088] [2023-09-01 07:40:57,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:57,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:40:57,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:57,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:40:57,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:41:00,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 662 [2023-09-01 07:41:00,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 64 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 282.0) internal successors, (846), 3 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:00,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:41:00,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 662 [2023-09-01 07:41:00,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:41:03,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:41:05,184 INFO L130 PetriNetUnfolder]: 3401/5559 cut-off events. [2023-09-01 07:41:05,185 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2023-09-01 07:41:05,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11266 conditions, 5559 events. 3401/5559 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 37027 event pairs, 2400 based on Foata normal form. 1/2864 useless extension candidates. Maximal degree in co-relation 11256. Up to 5514 conditions per place. [2023-09-01 07:41:05,221 INFO L137 encePairwiseOnDemand]: 659/662 looper letters, 55 selfloop transitions, 6 changer transitions 0/63 dead transitions. [2023-09-01 07:41:05,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 63 transitions, 374 flow [2023-09-01 07:41:05,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:41:05,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:41:05,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 884 transitions. [2023-09-01 07:41:05,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44511581067472306 [2023-09-01 07:41:05,225 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 884 transitions. [2023-09-01 07:41:05,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 884 transitions. [2023-09-01 07:41:05,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:41:05,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 884 transitions. [2023-09-01 07:41:05,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.6666666666667) internal successors, (884), 3 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:05,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:05,231 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:05,231 INFO L175 Difference]: Start difference. First operand has 54 places, 64 transitions, 262 flow. Second operand 3 states and 884 transitions. [2023-09-01 07:41:05,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 63 transitions, 374 flow [2023-09-01 07:41:05,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 63 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:41:05,234 INFO L231 Difference]: Finished difference. Result has 54 places, 63 transitions, 262 flow [2023-09-01 07:41:05,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=54, PETRI_TRANSITIONS=63} [2023-09-01 07:41:05,235 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2023-09-01 07:41:05,235 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 63 transitions, 262 flow [2023-09-01 07:41:05,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.0) internal successors, (846), 3 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:05,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:41:05,236 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 07:41:05,245 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 07:41:05,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:41:05,447 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:41:05,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:41:05,447 INFO L85 PathProgramCache]: Analyzing trace with hash -717067676, now seen corresponding path program 1 times [2023-09-01 07:41:05,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:41:05,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525244799] [2023-09-01 07:41:05,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:05,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:41:05,469 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:41:05,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1775227037] [2023-09-01 07:41:05,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:05,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:41:05,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:41:05,471 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 07:41:05,474 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 07:41:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:41:05,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 07:41:05,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:41:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:41:05,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:41:05,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:41:05,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525244799] [2023-09-01 07:41:05,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:41:05,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775227037] [2023-09-01 07:41:05,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775227037] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:41:05,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:41:05,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 07:41:05,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481597931] [2023-09-01 07:41:05,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:41:05,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:41:05,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:41:05,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:41:05,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 07:41:05,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 662 [2023-09-01 07:41:05,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 63 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 276.25) internal successors, (1105), 4 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:05,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:41:05,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 662 [2023-09-01 07:41:05,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:41:06,370 INFO L130 PetriNetUnfolder]: 4078/6664 cut-off events. [2023-09-01 07:41:06,370 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2023-09-01 07:41:06,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13490 conditions, 6664 events. 4078/6664 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 45678 event pairs, 2880 based on Foata normal form. 1/3443 useless extension candidates. Maximal degree in co-relation 13480. Up to 4969 conditions per place. [2023-09-01 07:41:06,399 INFO L137 encePairwiseOnDemand]: 656/662 looper letters, 114 selfloop transitions, 11 changer transitions 0/127 dead transitions. [2023-09-01 07:41:06,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 127 transitions, 664 flow [2023-09-01 07:41:06,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:41:06,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:41:06,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1208 transitions. [2023-09-01 07:41:06,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4561933534743202 [2023-09-01 07:41:06,403 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1208 transitions. [2023-09-01 07:41:06,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1208 transitions. [2023-09-01 07:41:06,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:41:06,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1208 transitions. [2023-09-01 07:41:06,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:06,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 662.0) internal successors, (3310), 5 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:06,412 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 662.0) internal successors, (3310), 5 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:06,412 INFO L175 Difference]: Start difference. First operand has 54 places, 63 transitions, 262 flow. Second operand 4 states and 1208 transitions. [2023-09-01 07:41:06,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 127 transitions, 664 flow [2023-09-01 07:41:06,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 127 transitions, 652 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:41:06,415 INFO L231 Difference]: Finished difference. Result has 56 places, 66 transitions, 301 flow [2023-09-01 07:41:06,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=56, PETRI_TRANSITIONS=66} [2023-09-01 07:41:06,416 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2023-09-01 07:41:06,416 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 66 transitions, 301 flow [2023-09-01 07:41:06,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.25) internal successors, (1105), 4 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:06,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:41:06,417 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-09-01 07:41:06,427 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 07:41:06,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:41:06,623 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:41:06,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:41:06,624 INFO L85 PathProgramCache]: Analyzing trace with hash -690549195, now seen corresponding path program 1 times [2023-09-01 07:41:06,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:41:06,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114386212] [2023-09-01 07:41:06,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:06,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:41:06,641 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:41:06,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [492885733] [2023-09-01 07:41:06,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:06,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:41:06,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:41:06,643 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 07:41:06,648 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 07:41:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:41:06,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:41:06,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:41:06,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:41:06,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:41:06,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:41:06,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:41:06,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114386212] [2023-09-01 07:41:06,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:41:06,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492885733] [2023-09-01 07:41:06,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492885733] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:41:06,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 07:41:06,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-09-01 07:41:06,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864225327] [2023-09-01 07:41:06,790 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 07:41:06,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 07:41:06,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:41:06,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 07:41:06,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-09-01 07:41:06,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 662 [2023-09-01 07:41:06,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 66 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:06,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:41:06,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 662 [2023-09-01 07:41:06,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:41:08,035 INFO L130 PetriNetUnfolder]: 9163/14962 cut-off events. [2023-09-01 07:41:08,035 INFO L131 PetriNetUnfolder]: For 356/356 co-relation queries the response was YES. [2023-09-01 07:41:08,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30234 conditions, 14962 events. 9163/14962 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 867. Compared 110896 event pairs, 6480 based on Foata normal form. 0/7715 useless extension candidates. Maximal degree in co-relation 30223. Up to 3295 conditions per place. [2023-09-01 07:41:08,093 INFO L137 encePairwiseOnDemand]: 659/662 looper letters, 222 selfloop transitions, 5 changer transitions 0/229 dead transitions. [2023-09-01 07:41:08,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 229 transitions, 1296 flow [2023-09-01 07:41:08,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:41:08,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:41:08,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1891 transitions. [2023-09-01 07:41:08,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47608257804632426 [2023-09-01 07:41:08,101 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1891 transitions. [2023-09-01 07:41:08,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1891 transitions. [2023-09-01 07:41:08,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:41:08,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1891 transitions. [2023-09-01 07:41:08,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 315.1666666666667) internal successors, (1891), 6 states have internal predecessors, (1891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:08,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 662.0) internal successors, (4634), 7 states have internal predecessors, (4634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:08,111 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 662.0) internal successors, (4634), 7 states have internal predecessors, (4634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:08,111 INFO L175 Difference]: Start difference. First operand has 56 places, 66 transitions, 301 flow. Second operand 6 states and 1891 transitions. [2023-09-01 07:41:08,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 229 transitions, 1296 flow [2023-09-01 07:41:08,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 229 transitions, 1288 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-09-01 07:41:08,116 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 331 flow [2023-09-01 07:41:08,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=331, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2023-09-01 07:41:08,118 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2023-09-01 07:41:08,118 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 331 flow [2023-09-01 07:41:08,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:08,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:41:08,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:41:08,145 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 07:41:08,341 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,SelfDestructingSolverStorable8 [2023-09-01 07:41:08,342 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:41:08,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:41:08,342 INFO L85 PathProgramCache]: Analyzing trace with hash -53912874, now seen corresponding path program 1 times [2023-09-01 07:41:08,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:41:08,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582018133] [2023-09-01 07:41:08,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:08,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:41:08,355 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:41:08,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1522697115] [2023-09-01 07:41:08,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:08,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:41:08,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:41:08,356 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 07:41:08,359 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 07:41:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:41:08,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 07:41:08,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:41:08,493 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 07:41:08,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:41:08,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:41:08,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582018133] [2023-09-01 07:41:08,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:41:08,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522697115] [2023-09-01 07:41:08,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522697115] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:41:08,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:41:08,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 07:41:08,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926516483] [2023-09-01 07:41:08,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:41:08,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:41:08,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:41:08,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:41:08,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:41:08,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 662 [2023-09-01 07:41:08,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 331 flow. Second operand has 5 states, 5 states have (on average 273.6) internal successors, (1368), 5 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:08,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:41:08,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 662 [2023-09-01 07:41:08,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:41:10,064 INFO L130 PetriNetUnfolder]: 10910/18934 cut-off events. [2023-09-01 07:41:10,064 INFO L131 PetriNetUnfolder]: For 540/540 co-relation queries the response was YES. [2023-09-01 07:41:10,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38544 conditions, 18934 events. 10910/18934 cut-off events. For 540/540 co-relation queries the response was YES. Maximal size of possible extension queue 841. Compared 152155 event pairs, 6155 based on Foata normal form. 0/11102 useless extension candidates. Maximal degree in co-relation 38529. Up to 12676 conditions per place. [2023-09-01 07:41:10,136 INFO L137 encePairwiseOnDemand]: 653/662 looper letters, 162 selfloop transitions, 17 changer transitions 0/180 dead transitions. [2023-09-01 07:41:10,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 180 transitions, 1047 flow [2023-09-01 07:41:10,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:41:10,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:41:10,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2047 transitions. [2023-09-01 07:41:10,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417350021579629 [2023-09-01 07:41:10,142 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2047 transitions. [2023-09-01 07:41:10,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2047 transitions. [2023-09-01 07:41:10,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:41:10,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2047 transitions. [2023-09-01 07:41:10,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 292.42857142857144) internal successors, (2047), 7 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:10,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 662.0) internal successors, (5296), 8 states have internal predecessors, (5296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:10,153 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 662.0) internal successors, (5296), 8 states have internal predecessors, (5296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:10,153 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 331 flow. Second operand 7 states and 2047 transitions. [2023-09-01 07:41:10,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 180 transitions, 1047 flow [2023-09-01 07:41:10,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 180 transitions, 1023 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-09-01 07:41:10,158 INFO L231 Difference]: Finished difference. Result has 74 places, 77 transitions, 443 flow [2023-09-01 07:41:10,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=443, PETRI_PLACES=74, PETRI_TRANSITIONS=77} [2023-09-01 07:41:10,160 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 21 predicate places. [2023-09-01 07:41:10,160 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 77 transitions, 443 flow [2023-09-01 07:41:10,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.6) internal successors, (1368), 5 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:10,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:41:10,161 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-09-01 07:41:10,169 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 07:41:10,368 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,SelfDestructingSolverStorable9 [2023-09-01 07:41:10,369 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:41:10,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:41:10,369 INFO L85 PathProgramCache]: Analyzing trace with hash 50329037, now seen corresponding path program 1 times [2023-09-01 07:41:10,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:41:10,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959150729] [2023-09-01 07:41:10,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:10,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:41:10,385 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:41:10,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1717269822] [2023-09-01 07:41:10,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:10,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:41:10,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:41:10,387 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 07:41:10,398 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 07:41:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:41:10,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 07:41:10,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:41:10,549 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 07:41:10,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:41:10,594 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 07:41:10,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:41:10,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959150729] [2023-09-01 07:41:10,595 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:41:10,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717269822] [2023-09-01 07:41:10,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717269822] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:41:10,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 07:41:10,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-09-01 07:41:10,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688331424] [2023-09-01 07:41:10,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 07:41:10,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 07:41:10,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:41:10,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 07:41:10,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-09-01 07:41:10,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 662 [2023-09-01 07:41:10,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 77 transitions, 443 flow. Second operand has 10 states, 10 states have (on average 270.2) internal successors, (2702), 10 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:10,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:41:10,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 662 [2023-09-01 07:41:10,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:41:13,199 INFO L130 PetriNetUnfolder]: 14627/25157 cut-off events. [2023-09-01 07:41:13,200 INFO L131 PetriNetUnfolder]: For 7435/8437 co-relation queries the response was YES. [2023-09-01 07:41:13,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55126 conditions, 25157 events. 14627/25157 cut-off events. For 7435/8437 co-relation queries the response was YES. Maximal size of possible extension queue 1493. Compared 218411 event pairs, 10728 based on Foata normal form. 1003/16882 useless extension candidates. Maximal degree in co-relation 55105. Up to 15931 conditions per place. [2023-09-01 07:41:13,308 INFO L137 encePairwiseOnDemand]: 651/662 looper letters, 180 selfloop transitions, 72 changer transitions 0/256 dead transitions. [2023-09-01 07:41:13,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 256 transitions, 1562 flow [2023-09-01 07:41:13,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 07:41:13,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 07:41:13,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3704 transitions. [2023-09-01 07:41:13,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43039739716476877 [2023-09-01 07:41:13,324 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3704 transitions. [2023-09-01 07:41:13,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3704 transitions. [2023-09-01 07:41:13,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:41:13,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3704 transitions. [2023-09-01 07:41:13,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 284.9230769230769) internal successors, (3704), 13 states have internal predecessors, (3704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:13,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 662.0) internal successors, (9268), 14 states have internal predecessors, (9268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:13,349 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 662.0) internal successors, (9268), 14 states have internal predecessors, (9268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:13,349 INFO L175 Difference]: Start difference. First operand has 74 places, 77 transitions, 443 flow. Second operand 13 states and 3704 transitions. [2023-09-01 07:41:13,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 256 transitions, 1562 flow [2023-09-01 07:41:13,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 256 transitions, 1562 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 07:41:13,399 INFO L231 Difference]: Finished difference. Result has 89 places, 118 transitions, 953 flow [2023-09-01 07:41:13,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=953, PETRI_PLACES=89, PETRI_TRANSITIONS=118} [2023-09-01 07:41:13,399 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 36 predicate places. [2023-09-01 07:41:13,399 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 118 transitions, 953 flow [2023-09-01 07:41:13,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 270.2) internal successors, (2702), 10 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:13,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:41:13,400 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-09-01 07:41:13,411 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 07:41:13,605 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,SelfDestructingSolverStorable10 [2023-09-01 07:41:13,606 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:41:13,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:41:13,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2068288911, now seen corresponding path program 1 times [2023-09-01 07:41:13,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:41:13,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4449861] [2023-09-01 07:41:13,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:13,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:41:13,621 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:41:13,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400871617] [2023-09-01 07:41:13,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:13,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:41:13,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:41:13,622 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 07:41:13,625 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 07:41:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:41:13,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 07:41:13,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:41:13,770 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 07:41:13,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:41:13,822 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 07:41:13,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:41:13,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4449861] [2023-09-01 07:41:13,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:41:13,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400871617] [2023-09-01 07:41:13,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400871617] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:41:13,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 07:41:13,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-09-01 07:41:13,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573112217] [2023-09-01 07:41:13,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 07:41:13,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 07:41:13,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:41:13,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 07:41:13,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-09-01 07:41:13,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-09-01 07:41:13,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 118 transitions, 953 flow. Second operand has 12 states, 12 states have (on average 281.25) internal successors, (3375), 12 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:13,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:41:13,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-09-01 07:41:13,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:41:18,125 INFO L130 PetriNetUnfolder]: 27095/46355 cut-off events. [2023-09-01 07:41:18,125 INFO L131 PetriNetUnfolder]: For 13685/15341 co-relation queries the response was YES. [2023-09-01 07:41:18,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102227 conditions, 46355 events. 27095/46355 cut-off events. For 13685/15341 co-relation queries the response was YES. Maximal size of possible extension queue 2191. Compared 421768 event pairs, 19800 based on Foata normal form. 1722/30887 useless extension candidates. Maximal degree in co-relation 102203. Up to 7357 conditions per place. [2023-09-01 07:41:18,333 INFO L137 encePairwiseOnDemand]: 654/662 looper letters, 435 selfloop transitions, 74 changer transitions 0/513 dead transitions. [2023-09-01 07:41:18,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 513 transitions, 3625 flow [2023-09-01 07:41:18,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 07:41:18,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 07:41:18,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3782 transitions. [2023-09-01 07:41:18,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47608257804632426 [2023-09-01 07:41:18,343 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3782 transitions. [2023-09-01 07:41:18,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3782 transitions. [2023-09-01 07:41:18,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:41:18,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3782 transitions. [2023-09-01 07:41:18,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 315.1666666666667) internal successors, (3782), 12 states have internal predecessors, (3782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:18,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 662.0) internal successors, (8606), 13 states have internal predecessors, (8606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:18,363 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 662.0) internal successors, (8606), 13 states have internal predecessors, (8606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:18,363 INFO L175 Difference]: Start difference. First operand has 89 places, 118 transitions, 953 flow. Second operand 12 states and 3782 transitions. [2023-09-01 07:41:18,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 513 transitions, 3625 flow [2023-09-01 07:41:18,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 513 transitions, 3587 flow, removed 19 selfloop flow, removed 0 redundant places. [2023-09-01 07:41:18,497 INFO L231 Difference]: Finished difference. Result has 106 places, 154 transitions, 1487 flow [2023-09-01 07:41:18,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1487, PETRI_PLACES=106, PETRI_TRANSITIONS=154} [2023-09-01 07:41:18,499 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 53 predicate places. [2023-09-01 07:41:18,499 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 154 transitions, 1487 flow [2023-09-01 07:41:18,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 281.25) internal successors, (3375), 12 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:18,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:41:18,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:41:18,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-09-01 07:41:18,706 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,SelfDestructingSolverStorable11 [2023-09-01 07:41:18,706 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:41:18,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:41:18,707 INFO L85 PathProgramCache]: Analyzing trace with hash 21882226, now seen corresponding path program 1 times [2023-09-01 07:41:18,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:41:18,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65869653] [2023-09-01 07:41:18,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:18,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:41:18,718 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:41:18,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [842402902] [2023-09-01 07:41:18,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:18,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:41:18,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:41:18,720 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 07:41:18,728 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 07:41:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:41:18,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:41:18,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:41:18,852 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 07:41:18,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:41:18,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:41:18,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65869653] [2023-09-01 07:41:18,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:41:18,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842402902] [2023-09-01 07:41:18,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842402902] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:41:18,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:41:18,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 07:41:18,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360891589] [2023-09-01 07:41:18,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:41:18,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:41:18,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:41:18,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:41:18,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:41:18,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 662 [2023-09-01 07:41:18,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 154 transitions, 1487 flow. Second operand has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:18,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:41:18,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 662 [2023-09-01 07:41:18,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:41:22,834 INFO L130 PetriNetUnfolder]: 23642/40982 cut-off events. [2023-09-01 07:41:22,834 INFO L131 PetriNetUnfolder]: For 11448/13073 co-relation queries the response was YES. [2023-09-01 07:41:22,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91377 conditions, 40982 events. 23642/40982 cut-off events. For 11448/13073 co-relation queries the response was YES. Maximal size of possible extension queue 1844. Compared 367821 event pairs, 17676 based on Foata normal form. 1639/28341 useless extension candidates. Maximal degree in co-relation 91346. Up to 39368 conditions per place. [2023-09-01 07:41:23,040 INFO L137 encePairwiseOnDemand]: 655/662 looper letters, 181 selfloop transitions, 12 changer transitions 7/203 dead transitions. [2023-09-01 07:41:23,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 203 transitions, 2252 flow [2023-09-01 07:41:23,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:41:23,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:41:23,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1456 transitions. [2023-09-01 07:41:23,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398791540785498 [2023-09-01 07:41:23,044 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1456 transitions. [2023-09-01 07:41:23,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1456 transitions. [2023-09-01 07:41:23,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:41:23,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1456 transitions. [2023-09-01 07:41:23,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.2) internal successors, (1456), 5 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:23,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 662.0) internal successors, (3972), 6 states have internal predecessors, (3972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:23,051 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 662.0) internal successors, (3972), 6 states have internal predecessors, (3972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:23,051 INFO L175 Difference]: Start difference. First operand has 106 places, 154 transitions, 1487 flow. Second operand 5 states and 1456 transitions. [2023-09-01 07:41:23,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 203 transitions, 2252 flow [2023-09-01 07:41:23,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 203 transitions, 2002 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-09-01 07:41:23,153 INFO L231 Difference]: Finished difference. Result has 108 places, 156 transitions, 1349 flow [2023-09-01 07:41:23,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=1297, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1349, PETRI_PLACES=108, PETRI_TRANSITIONS=156} [2023-09-01 07:41:23,154 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 55 predicate places. [2023-09-01 07:41:23,154 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 156 transitions, 1349 flow [2023-09-01 07:41:23,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:23,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:41:23,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:41:23,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-09-01 07:41:23,360 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,SelfDestructingSolverStorable12 [2023-09-01 07:41:23,360 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:41:23,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:41:23,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1821945608, now seen corresponding path program 1 times [2023-09-01 07:41:23,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:41:23,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974148276] [2023-09-01 07:41:23,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:23,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:41:23,370 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:41:23,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [58003057] [2023-09-01 07:41:23,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:23,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:41:23,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:41:23,371 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 07:41:23,371 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 07:41:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:41:23,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 07:41:23,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:41:23,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:41:23,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:41:23,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:41:23,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974148276] [2023-09-01 07:41:23,480 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:41:23,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58003057] [2023-09-01 07:41:23,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58003057] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:41:23,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:41:23,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:41:23,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115050325] [2023-09-01 07:41:23,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:41:23,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:41:23,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:41:23,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:41:23,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:41:23,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 662 [2023-09-01 07:41:23,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 156 transitions, 1349 flow. Second operand has 3 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:23,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:41:23,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 662 [2023-09-01 07:41:23,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:41:27,122 INFO L130 PetriNetUnfolder]: 22817/40041 cut-off events. [2023-09-01 07:41:27,122 INFO L131 PetriNetUnfolder]: For 11775/11914 co-relation queries the response was YES. [2023-09-01 07:41:27,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93277 conditions, 40041 events. 22817/40041 cut-off events. For 11775/11914 co-relation queries the response was YES. Maximal size of possible extension queue 1653. Compared 369864 event pairs, 1535 based on Foata normal form. 139/28507 useless extension candidates. Maximal degree in co-relation 93243. Up to 34198 conditions per place. [2023-09-01 07:41:27,364 INFO L137 encePairwiseOnDemand]: 660/662 looper letters, 167 selfloop transitions, 3 changer transitions 0/172 dead transitions. [2023-09-01 07:41:27,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 172 transitions, 1724 flow [2023-09-01 07:41:27,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:41:27,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:41:27,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 919 transitions. [2023-09-01 07:41:27,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46273917421953675 [2023-09-01 07:41:27,367 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 919 transitions. [2023-09-01 07:41:27,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 919 transitions. [2023-09-01 07:41:27,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:41:27,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 919 transitions. [2023-09-01 07:41:27,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 306.3333333333333) internal successors, (919), 3 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:27,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:27,371 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:27,371 INFO L175 Difference]: Start difference. First operand has 108 places, 156 transitions, 1349 flow. Second operand 3 states and 919 transitions. [2023-09-01 07:41:27,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 172 transitions, 1724 flow [2023-09-01 07:41:27,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 172 transitions, 1704 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:41:27,583 INFO L231 Difference]: Finished difference. Result has 107 places, 155 transitions, 1333 flow [2023-09-01 07:41:27,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=1327, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1333, PETRI_PLACES=107, PETRI_TRANSITIONS=155} [2023-09-01 07:41:27,584 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 54 predicate places. [2023-09-01 07:41:27,584 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 155 transitions, 1333 flow [2023-09-01 07:41:27,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:27,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:41:27,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:41:27,596 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 07:41:27,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-09-01 07:41:27,791 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:41:27,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:41:27,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1821945609, now seen corresponding path program 1 times [2023-09-01 07:41:27,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:41:27,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129318579] [2023-09-01 07:41:27,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:27,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:41:27,802 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:41:27,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952827882] [2023-09-01 07:41:27,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:27,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:41:27,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:41:27,805 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 07:41:27,819 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 07:41:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:41:27,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 07:41:27,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:41:27,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:41:27,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:41:27,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:41:27,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129318579] [2023-09-01 07:41:27,929 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:41:27,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952827882] [2023-09-01 07:41:27,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952827882] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:41:27,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:41:27,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:41:27,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648819351] [2023-09-01 07:41:27,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:41:27,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:41:27,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:41:27,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:41:27,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:41:27,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 662 [2023-09-01 07:41:27,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 155 transitions, 1333 flow. Second operand has 3 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:27,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:41:27,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 662 [2023-09-01 07:41:27,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:41:33,202 INFO L130 PetriNetUnfolder]: 32189/55958 cut-off events. [2023-09-01 07:41:33,202 INFO L131 PetriNetUnfolder]: For 28333/28560 co-relation queries the response was YES. [2023-09-01 07:41:33,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132694 conditions, 55958 events. 32189/55958 cut-off events. For 28333/28560 co-relation queries the response was YES. Maximal size of possible extension queue 2186. Compared 504377 event pairs, 16500 based on Foata normal form. 227/40716 useless extension candidates. Maximal degree in co-relation 132660. Up to 28384 conditions per place. [2023-09-01 07:41:33,543 INFO L137 encePairwiseOnDemand]: 659/662 looper letters, 174 selfloop transitions, 4 changer transitions 0/180 dead transitions. [2023-09-01 07:41:33,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 180 transitions, 1752 flow [2023-09-01 07:41:33,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:41:33,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:41:33,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 927 transitions. [2023-09-01 07:41:33,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46676737160120846 [2023-09-01 07:41:33,545 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 927 transitions. [2023-09-01 07:41:33,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 927 transitions. [2023-09-01 07:41:33,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:41:33,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 927 transitions. [2023-09-01 07:41:33,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:33,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:33,550 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:33,550 INFO L175 Difference]: Start difference. First operand has 107 places, 155 transitions, 1333 flow. Second operand 3 states and 927 transitions. [2023-09-01 07:41:33,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 180 transitions, 1752 flow [2023-09-01 07:41:33,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 180 transitions, 1749 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:41:33,886 INFO L231 Difference]: Finished difference. Result has 109 places, 156 transitions, 1348 flow [2023-09-01 07:41:33,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1348, PETRI_PLACES=109, PETRI_TRANSITIONS=156} [2023-09-01 07:41:33,887 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 56 predicate places. [2023-09-01 07:41:33,887 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 156 transitions, 1348 flow [2023-09-01 07:41:33,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:33,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:41:33,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:41:33,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-09-01 07:41:34,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:41:34,093 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:41:34,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:41:34,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1787278130, now seen corresponding path program 1 times [2023-09-01 07:41:34,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:41:34,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599782499] [2023-09-01 07:41:34,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:34,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:41:34,108 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:41:34,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1509103117] [2023-09-01 07:41:34,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:34,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:41:34,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:41:34,110 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 07:41:34,113 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 07:41:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:41:34,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 07:41:34,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:41:34,273 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 07:41:34,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:41:34,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:41:34,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599782499] [2023-09-01 07:41:34,274 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:41:34,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509103117] [2023-09-01 07:41:34,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509103117] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:41:34,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:41:34,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 07:41:34,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141114273] [2023-09-01 07:41:34,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:41:34,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:41:34,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:41:34,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:41:34,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:41:34,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 662 [2023-09-01 07:41:34,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 156 transitions, 1348 flow. Second operand has 5 states, 5 states have (on average 274.2) internal successors, (1371), 5 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 07:41:34,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:41:34,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 662 [2023-09-01 07:41:34,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:41:40,332 INFO L130 PetriNetUnfolder]: 31914/57626 cut-off events. [2023-09-01 07:41:40,332 INFO L131 PetriNetUnfolder]: For 22457/24482 co-relation queries the response was YES. [2023-09-01 07:41:40,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140448 conditions, 57626 events. 31914/57626 cut-off events. For 22457/24482 co-relation queries the response was YES. Maximal size of possible extension queue 2483. Compared 570525 event pairs, 19602 based on Foata normal form. 2279/45658 useless extension candidates. Maximal degree in co-relation 140413. Up to 38542 conditions per place. [2023-09-01 07:41:40,725 INFO L137 encePairwiseOnDemand]: 650/662 looper letters, 196 selfloop transitions, 77 changer transitions 4/282 dead transitions. [2023-09-01 07:41:40,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 282 transitions, 2779 flow [2023-09-01 07:41:40,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:41:40,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:41:40,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2027 transitions. [2023-09-01 07:41:40,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43741907639188604 [2023-09-01 07:41:40,730 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2027 transitions. [2023-09-01 07:41:40,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2027 transitions. [2023-09-01 07:41:40,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:41:40,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2027 transitions. [2023-09-01 07:41:40,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 289.57142857142856) internal successors, (2027), 7 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:40,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 662.0) internal successors, (5296), 8 states have internal predecessors, (5296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:40,738 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 662.0) internal successors, (5296), 8 states have internal predecessors, (5296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:40,738 INFO L175 Difference]: Start difference. First operand has 109 places, 156 transitions, 1348 flow. Second operand 7 states and 2027 transitions. [2023-09-01 07:41:40,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 282 transitions, 2779 flow [2023-09-01 07:41:41,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 282 transitions, 2771 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:41:41,125 INFO L231 Difference]: Finished difference. Result has 120 places, 198 transitions, 2173 flow [2023-09-01 07:41:41,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2173, PETRI_PLACES=120, PETRI_TRANSITIONS=198} [2023-09-01 07:41:41,125 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 67 predicate places. [2023-09-01 07:41:41,126 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 198 transitions, 2173 flow [2023-09-01 07:41:41,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 274.2) internal successors, (1371), 5 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 07:41:41,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:41:41,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:41:41,131 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 07:41:41,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 07:41:41,327 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:41:41,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:41:41,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1787278116, now seen corresponding path program 1 times [2023-09-01 07:41:41,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:41:41,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987834292] [2023-09-01 07:41:41,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:41,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:41:41,337 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:41:41,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910849302] [2023-09-01 07:41:41,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:41,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:41:41,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:41:41,339 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 07:41:41,363 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 07:41:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:41:41,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 07:41:41,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:41:41,486 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 07:41:41,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:41:41,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:41:41,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987834292] [2023-09-01 07:41:41,487 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:41:41,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910849302] [2023-09-01 07:41:41,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910849302] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:41:41,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:41:41,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:41:41,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113607896] [2023-09-01 07:41:41,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:41:41,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:41:41,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:41:41,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:41:41,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:41:41,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 662 [2023-09-01 07:41:41,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 198 transitions, 2173 flow. Second operand has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:41,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:41:41,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 662 [2023-09-01 07:41:41,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:41:47,786 INFO L130 PetriNetUnfolder]: 30410/55036 cut-off events. [2023-09-01 07:41:47,786 INFO L131 PetriNetUnfolder]: For 36343/38109 co-relation queries the response was YES. [2023-09-01 07:41:48,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152941 conditions, 55036 events. 30410/55036 cut-off events. For 36343/38109 co-relation queries the response was YES. Maximal size of possible extension queue 2169. Compared 534029 event pairs, 2001 based on Foata normal form. 1766/46054 useless extension candidates. Maximal degree in co-relation 152901. Up to 47512 conditions per place. [2023-09-01 07:41:48,168 INFO L137 encePairwiseOnDemand]: 660/662 looper letters, 200 selfloop transitions, 2 changer transitions 0/205 dead transitions. [2023-09-01 07:41:48,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 205 transitions, 2602 flow [2023-09-01 07:41:48,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:41:48,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:41:48,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 908 transitions. [2023-09-01 07:41:48,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45720040281973817 [2023-09-01 07:41:48,171 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 908 transitions. [2023-09-01 07:41:48,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 908 transitions. [2023-09-01 07:41:48,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:41:48,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 908 transitions. [2023-09-01 07:41:48,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:48,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:48,174 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:48,174 INFO L175 Difference]: Start difference. First operand has 120 places, 198 transitions, 2173 flow. Second operand 3 states and 908 transitions. [2023-09-01 07:41:48,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 205 transitions, 2602 flow [2023-09-01 07:41:48,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 205 transitions, 2590 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-09-01 07:41:48,749 INFO L231 Difference]: Finished difference. Result has 121 places, 197 transitions, 2163 flow [2023-09-01 07:41:48,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=2159, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2163, PETRI_PLACES=121, PETRI_TRANSITIONS=197} [2023-09-01 07:41:48,750 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 68 predicate places. [2023-09-01 07:41:48,750 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 197 transitions, 2163 flow [2023-09-01 07:41:48,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:48,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:41:48,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:41:48,765 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 07:41:48,957 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,SelfDestructingSolverStorable16 [2023-09-01 07:41:48,958 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:41:48,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:41:48,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1787278115, now seen corresponding path program 1 times [2023-09-01 07:41:48,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:41:48,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772959980] [2023-09-01 07:41:48,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:48,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:41:48,967 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:41:48,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [847434698] [2023-09-01 07:41:48,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:48,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:41:48,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:41:48,969 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 07:41:48,977 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 07:41:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:41:49,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 07:41:49,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:41:49,122 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 07:41:49,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:41:49,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:41:49,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772959980] [2023-09-01 07:41:49,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:41:49,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847434698] [2023-09-01 07:41:49,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847434698] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:41:49,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:41:49,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:41:49,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843294731] [2023-09-01 07:41:49,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:41:49,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:41:49,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:41:49,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:41:49,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:41:49,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 662 [2023-09-01 07:41:49,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 197 transitions, 2163 flow. Second operand has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:49,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:41:49,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 662 [2023-09-01 07:41:49,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:41:59,073 INFO L130 PetriNetUnfolder]: 47693/85270 cut-off events. [2023-09-01 07:41:59,073 INFO L131 PetriNetUnfolder]: For 57112/59914 co-relation queries the response was YES. [2023-09-01 07:41:59,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236975 conditions, 85270 events. 47693/85270 cut-off events. For 57112/59914 co-relation queries the response was YES. Maximal size of possible extension queue 3248. Compared 858679 event pairs, 22093 based on Foata normal form. 2802/69843 useless extension candidates. Maximal degree in co-relation 236934. Up to 49074 conditions per place. [2023-09-01 07:42:00,031 INFO L137 encePairwiseOnDemand]: 659/662 looper letters, 214 selfloop transitions, 3 changer transitions 0/220 dead transitions. [2023-09-01 07:42:00,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 220 transitions, 2701 flow [2023-09-01 07:42:00,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:42:00,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:42:00,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 923 transitions. [2023-09-01 07:42:00,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4647532729103726 [2023-09-01 07:42:00,034 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 923 transitions. [2023-09-01 07:42:00,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 923 transitions. [2023-09-01 07:42:00,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:42:00,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 923 transitions. [2023-09-01 07:42:00,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 307.6666666666667) internal successors, (923), 3 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:00,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:00,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:00,037 INFO L175 Difference]: Start difference. First operand has 121 places, 197 transitions, 2163 flow. Second operand 3 states and 923 transitions. [2023-09-01 07:42:00,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 220 transitions, 2701 flow [2023-09-01 07:42:01,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 220 transitions, 2699 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:42:01,193 INFO L231 Difference]: Finished difference. Result has 123 places, 198 transitions, 2176 flow [2023-09-01 07:42:01,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=2161, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2176, PETRI_PLACES=123, PETRI_TRANSITIONS=198} [2023-09-01 07:42:01,194 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 70 predicate places. [2023-09-01 07:42:01,194 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 198 transitions, 2176 flow [2023-09-01 07:42:01,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:01,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:42:01,195 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:42:01,200 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 07:42:01,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-09-01 07:42:01,395 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:42:01,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:42:01,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1456899908, now seen corresponding path program 1 times [2023-09-01 07:42:01,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:42:01,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642497804] [2023-09-01 07:42:01,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:42:01,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:42:01,407 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:42:01,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039999899] [2023-09-01 07:42:01,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:42:01,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:42:01,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:42:01,409 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 07:42:01,410 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 07:42:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:42:01,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 07:42:01,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:42:01,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:42:01,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:42:01,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:42:01,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:42:01,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642497804] [2023-09-01 07:42:01,641 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:42:01,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039999899] [2023-09-01 07:42:01,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039999899] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:42:01,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 07:42:01,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-09-01 07:42:01,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660363489] [2023-09-01 07:42:01,642 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 07:42:01,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 07:42:01,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:42:01,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 07:42:01,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-09-01 07:42:01,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 662 [2023-09-01 07:42:01,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 198 transitions, 2176 flow. Second operand has 11 states, 11 states have (on average 266.72727272727275) internal successors, (2934), 11 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:01,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:42:01,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 662 [2023-09-01 07:42:01,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:42:18,073 INFO L130 PetriNetUnfolder]: 76617/136729 cut-off events. [2023-09-01 07:42:18,074 INFO L131 PetriNetUnfolder]: For 115805/116015 co-relation queries the response was YES. [2023-09-01 07:42:18,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408047 conditions, 136729 events. 76617/136729 cut-off events. For 115805/116015 co-relation queries the response was YES. Maximal size of possible extension queue 4459. Compared 1449425 event pairs, 21134 based on Foata normal form. 2910/111223 useless extension candidates. Maximal degree in co-relation 408005. Up to 38623 conditions per place. [2023-09-01 07:42:19,291 INFO L137 encePairwiseOnDemand]: 650/662 looper letters, 322 selfloop transitions, 32 changer transitions 48/404 dead transitions. [2023-09-01 07:42:19,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 404 transitions, 4181 flow [2023-09-01 07:42:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 07:42:19,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 07:42:19,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4709 transitions. [2023-09-01 07:42:19,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41842900302114805 [2023-09-01 07:42:19,298 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4709 transitions. [2023-09-01 07:42:19,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4709 transitions. [2023-09-01 07:42:19,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:42:19,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4709 transitions. [2023-09-01 07:42:19,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 277.0) internal successors, (4709), 17 states have internal predecessors, (4709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:19,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 662.0) internal successors, (11916), 18 states have internal predecessors, (11916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:19,310 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 662.0) internal successors, (11916), 18 states have internal predecessors, (11916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:19,310 INFO L175 Difference]: Start difference. First operand has 123 places, 198 transitions, 2176 flow. Second operand 17 states and 4709 transitions. [2023-09-01 07:42:19,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 404 transitions, 4181 flow [2023-09-01 07:42:21,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 404 transitions, 4173 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:42:21,711 INFO L231 Difference]: Finished difference. Result has 145 places, 203 transitions, 2326 flow [2023-09-01 07:42:21,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=2173, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2326, PETRI_PLACES=145, PETRI_TRANSITIONS=203} [2023-09-01 07:42:21,712 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 92 predicate places. [2023-09-01 07:42:21,712 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 203 transitions, 2326 flow [2023-09-01 07:42:21,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 266.72727272727275) internal successors, (2934), 11 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:21,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:42:21,712 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1] [2023-09-01 07:42:21,718 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 07:42:21,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:42:21,913 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:42:21,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:42:21,913 INFO L85 PathProgramCache]: Analyzing trace with hash 497683039, now seen corresponding path program 2 times [2023-09-01 07:42:21,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:42:21,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35108715] [2023-09-01 07:42:21,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:42:21,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:42:21,929 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:42:21,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [967255398] [2023-09-01 07:42:21,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:42:21,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:42:21,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:42:21,930 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 07:42:21,953 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 07:42:22,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:42:22,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:42:22,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:42:22,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:42:22,093 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 07:42:22,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:42:22,112 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 07:42:22,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:42:22,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35108715] [2023-09-01 07:42:22,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:42:22,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967255398] [2023-09-01 07:42:22,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967255398] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:42:22,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 07:42:22,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2023-09-01 07:42:22,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214845099] [2023-09-01 07:42:22,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 07:42:22,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:42:22,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:42:22,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:42:22,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 07:42:22,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-09-01 07:42:22,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 203 transitions, 2326 flow. Second operand has 4 states, 4 states have (on average 281.75) internal successors, (1127), 4 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:22,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:42:22,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-09-01 07:42:22,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:42:37,107 INFO L130 PetriNetUnfolder]: 64284/116792 cut-off events. [2023-09-01 07:42:37,107 INFO L131 PetriNetUnfolder]: For 170078/172826 co-relation queries the response was YES. [2023-09-01 07:42:37,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379211 conditions, 116792 events. 64284/116792 cut-off events. For 170078/172826 co-relation queries the response was YES. Maximal size of possible extension queue 4790. Compared 1263545 event pairs, 55242 based on Foata normal form. 2824/94294 useless extension candidates. Maximal degree in co-relation 379163. Up to 114292 conditions per place. [2023-09-01 07:42:38,274 INFO L137 encePairwiseOnDemand]: 657/662 looper letters, 118 selfloop transitions, 90 changer transitions 4/218 dead transitions. [2023-09-01 07:42:38,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 218 transitions, 2834 flow [2023-09-01 07:42:38,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:42:38,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:42:38,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1172 transitions. [2023-09-01 07:42:38,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425981873111782 [2023-09-01 07:42:38,275 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1172 transitions. [2023-09-01 07:42:38,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1172 transitions. [2023-09-01 07:42:38,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:42:38,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1172 transitions. [2023-09-01 07:42:38,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:38,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 662.0) internal successors, (3310), 5 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:38,278 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 662.0) internal successors, (3310), 5 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:38,278 INFO L175 Difference]: Start difference. First operand has 145 places, 203 transitions, 2326 flow. Second operand 4 states and 1172 transitions. [2023-09-01 07:42:38,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 218 transitions, 2834 flow [2023-09-01 07:42:40,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 218 transitions, 2741 flow, removed 12 selfloop flow, removed 7 redundant places. [2023-09-01 07:42:40,199 INFO L231 Difference]: Finished difference. Result has 136 places, 205 transitions, 2558 flow [2023-09-01 07:42:40,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=2136, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2558, PETRI_PLACES=136, PETRI_TRANSITIONS=205} [2023-09-01 07:42:40,200 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 83 predicate places. [2023-09-01 07:42:40,200 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 205 transitions, 2558 flow [2023-09-01 07:42:40,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.75) internal successors, (1127), 4 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:40,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:42:40,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:42:40,206 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 07:42:40,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:42:40,401 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:42:40,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:42:40,402 INFO L85 PathProgramCache]: Analyzing trace with hash -103419605, now seen corresponding path program 1 times [2023-09-01 07:42:40,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:42:40,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377357059] [2023-09-01 07:42:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:42:40,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:42:40,412 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:42:40,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [588588062] [2023-09-01 07:42:40,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:42:40,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:42:40,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:42:40,413 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 07:42:40,415 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 07:42:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:42:40,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 07:42:40,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:42:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:42:40,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:42:40,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:42:40,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377357059] [2023-09-01 07:42:40,556 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:42:40,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588588062] [2023-09-01 07:42:40,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588588062] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:42:40,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:42:40,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:42:40,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437810798] [2023-09-01 07:42:40,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:42:40,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:42:40,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:42:40,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:42:40,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:42:40,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 662 [2023-09-01 07:42:40,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 205 transitions, 2558 flow. Second operand has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:40,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:42:40,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 662 [2023-09-01 07:42:40,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:43:05,203 INFO L130 PetriNetUnfolder]: 99621/173296 cut-off events. [2023-09-01 07:43:05,203 INFO L131 PetriNetUnfolder]: For 186569/190435 co-relation queries the response was YES. [2023-09-01 07:43:06,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546195 conditions, 173296 events. 99621/173296 cut-off events. For 186569/190435 co-relation queries the response was YES. Maximal size of possible extension queue 6329. Compared 1855881 event pairs, 39031 based on Foata normal form. 3866/135083 useless extension candidates. Maximal degree in co-relation 546151. Up to 88454 conditions per place. [2023-09-01 07:43:06,822 INFO L137 encePairwiseOnDemand]: 656/662 looper letters, 219 selfloop transitions, 6 changer transitions 0/231 dead transitions. [2023-09-01 07:43:06,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 231 transitions, 3138 flow [2023-09-01 07:43:06,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:43:06,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:43:06,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 921 transitions. [2023-09-01 07:43:06,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4637462235649547 [2023-09-01 07:43:06,824 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 921 transitions. [2023-09-01 07:43:06,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 921 transitions. [2023-09-01 07:43:06,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:43:06,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 921 transitions. [2023-09-01 07:43:06,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 307.0) internal successors, (921), 3 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:43:06,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:43:06,827 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:43:06,827 INFO L175 Difference]: Start difference. First operand has 136 places, 205 transitions, 2558 flow. Second operand 3 states and 921 transitions. [2023-09-01 07:43:06,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 231 transitions, 3138 flow [2023-09-01 07:43:08,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 231 transitions, 3048 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:43:08,913 INFO L231 Difference]: Finished difference. Result has 138 places, 209 transitions, 2522 flow [2023-09-01 07:43:08,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=2468, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2522, PETRI_PLACES=138, PETRI_TRANSITIONS=209} [2023-09-01 07:43:08,913 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 85 predicate places. [2023-09-01 07:43:08,913 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 209 transitions, 2522 flow [2023-09-01 07:43:08,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:43:08,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:43:08,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:43:08,918 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 07:43:09,114 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,SelfDestructingSolverStorable20 [2023-09-01 07:43:09,114 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:43:09,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:43:09,115 INFO L85 PathProgramCache]: Analyzing trace with hash -103419672, now seen corresponding path program 1 times [2023-09-01 07:43:09,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:43:09,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513045643] [2023-09-01 07:43:09,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:43:09,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:43:09,125 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:43:09,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [375944845] [2023-09-01 07:43:09,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:43:09,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:43:09,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:43:09,127 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 07:43:09,129 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 07:43:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:43:09,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 07:43:09,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:43:09,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:43:09,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:43:09,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:43:09,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513045643] [2023-09-01 07:43:09,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:43:09,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375944845] [2023-09-01 07:43:09,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375944845] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:43:09,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:43:09,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:43:09,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84784364] [2023-09-01 07:43:09,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:43:09,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:43:09,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:43:09,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:43:09,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:43:09,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 662 [2023-09-01 07:43:09,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 209 transitions, 2522 flow. Second operand has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:43:09,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:43:09,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 662 [2023-09-01 07:43:09,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:43:28,875 INFO L130 PetriNetUnfolder]: 85345/152700 cut-off events. [2023-09-01 07:43:28,875 INFO L131 PetriNetUnfolder]: For 227389/230911 co-relation queries the response was YES. [2023-09-01 07:43:29,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511826 conditions, 152700 events. 85345/152700 cut-off events. For 227389/230911 co-relation queries the response was YES. Maximal size of possible extension queue 5753. Compared 1674326 event pairs, 6578 based on Foata normal form. 16162/142903 useless extension candidates. Maximal degree in co-relation 511781. Up to 133898 conditions per place. [2023-09-01 07:43:30,322 INFO L137 encePairwiseOnDemand]: 659/662 looper letters, 212 selfloop transitions, 3 changer transitions 0/221 dead transitions. [2023-09-01 07:43:30,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 221 transitions, 3016 flow [2023-09-01 07:43:30,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:43:30,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:43:30,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 910 transitions. [2023-09-01 07:43:30,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45820745216515607 [2023-09-01 07:43:30,324 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 910 transitions. [2023-09-01 07:43:30,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 910 transitions. [2023-09-01 07:43:30,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:43:30,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 910 transitions. [2023-09-01 07:43:30,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.3333333333333) internal successors, (910), 3 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:43:30,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:43:30,326 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:43:30,327 INFO L175 Difference]: Start difference. First operand has 138 places, 209 transitions, 2522 flow. Second operand 3 states and 910 transitions. [2023-09-01 07:43:30,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 221 transitions, 3016 flow [2023-09-01 07:43:32,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 221 transitions, 3006 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:43:32,495 INFO L231 Difference]: Finished difference. Result has 137 places, 206 transitions, 2507 flow [2023-09-01 07:43:32,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=2486, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2507, PETRI_PLACES=137, PETRI_TRANSITIONS=206} [2023-09-01 07:43:32,496 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 84 predicate places. [2023-09-01 07:43:32,496 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 206 transitions, 2507 flow [2023-09-01 07:43:32,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:43:32,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:43:32,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:43:32,502 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 07:43:32,701 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,SelfDestructingSolverStorable21 [2023-09-01 07:43:32,701 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:43:32,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:43:32,701 INFO L85 PathProgramCache]: Analyzing trace with hash -103419710, now seen corresponding path program 1 times [2023-09-01 07:43:32,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:43:32,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160690017] [2023-09-01 07:43:32,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:43:32,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:43:32,711 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:43:32,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644747179] [2023-09-01 07:43:32,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:43:32,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:43:32,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:43:32,713 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 07:43:32,714 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 07:43:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:43:32,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 07:43:32,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:43:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:43:32,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:43:32,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:43:32,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160690017] [2023-09-01 07:43:32,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:43:32,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644747179] [2023-09-01 07:43:32,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644747179] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:43:32,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:43:32,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:43:32,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843871778] [2023-09-01 07:43:32,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:43:32,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:43:32,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:43:32,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:43:32,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:43:32,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 662 [2023-09-01 07:43:32,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 206 transitions, 2507 flow. Second operand has 3 states, 3 states have (on average 289.3333333333333) internal successors, (868), 3 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:43:32,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:43:32,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 662 [2023-09-01 07:43:32,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:43:51,590 INFO L130 PetriNetUnfolder]: 81391/144930 cut-off events. [2023-09-01 07:43:51,590 INFO L131 PetriNetUnfolder]: For 215047/218261 co-relation queries the response was YES. [2023-09-01 07:43:52,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487710 conditions, 144930 events. 81391/144930 cut-off events. For 215047/218261 co-relation queries the response was YES. Maximal size of possible extension queue 5086. Compared 1543042 event pairs, 43964 based on Foata normal form. 3214/129947 useless extension candidates. Maximal degree in co-relation 487665. Up to 96135 conditions per place. [2023-09-01 07:43:53,276 INFO L137 encePairwiseOnDemand]: 658/662 looper letters, 220 selfloop transitions, 3 changer transitions 0/227 dead transitions. [2023-09-01 07:43:53,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 227 transitions, 3061 flow [2023-09-01 07:43:53,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:43:53,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:43:53,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 911 transitions. [2023-09-01 07:43:53,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45871097683786505 [2023-09-01 07:43:53,278 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 911 transitions. [2023-09-01 07:43:53,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 911 transitions. [2023-09-01 07:43:53,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:43:53,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 911 transitions. [2023-09-01 07:43:53,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.6666666666667) internal successors, (911), 3 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:43:53,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:43:53,280 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:43:53,280 INFO L175 Difference]: Start difference. First operand has 137 places, 206 transitions, 2507 flow. Second operand 3 states and 911 transitions. [2023-09-01 07:43:53,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 227 transitions, 3061 flow [2023-09-01 07:43:55,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 227 transitions, 3061 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 07:43:55,568 INFO L231 Difference]: Finished difference. Result has 140 places, 206 transitions, 2520 flow [2023-09-01 07:43:55,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=2507, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2520, PETRI_PLACES=140, PETRI_TRANSITIONS=206} [2023-09-01 07:43:55,568 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 87 predicate places. [2023-09-01 07:43:55,569 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 206 transitions, 2520 flow [2023-09-01 07:43:55,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.3333333333333) internal successors, (868), 3 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:43:55,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:43:55,569 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:43:55,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-09-01 07:43:55,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:43:55,773 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:43:55,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:43:55,773 INFO L85 PathProgramCache]: Analyzing trace with hash -412589414, now seen corresponding path program 1 times [2023-09-01 07:43:55,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:43:55,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18015424] [2023-09-01 07:43:55,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:43:55,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:43:55,792 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:43:55,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1230444945] [2023-09-01 07:43:55,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:43:55,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:43:55,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:43:55,794 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:43:55,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-09-01 07:43:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:43:55,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 07:43:55,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:43:55,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:43:55,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:43:56,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:43:56,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:43:56,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18015424] [2023-09-01 07:43:56,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:43:56,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230444945] [2023-09-01 07:43:56,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230444945] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:43:56,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 07:43:56,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-09-01 07:43:56,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475700827] [2023-09-01 07:43:56,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 07:43:56,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 07:43:56,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:43:56,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 07:43:56,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-09-01 07:43:56,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 662 [2023-09-01 07:43:56,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 206 transitions, 2520 flow. Second operand has 9 states, 9 states have (on average 276.0) internal successors, (2484), 9 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:43:56,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:43:56,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 662 [2023-09-01 07:43:56,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:44:13,754 INFO L130 PetriNetUnfolder]: 72999/130830 cut-off events. [2023-09-01 07:44:13,754 INFO L131 PetriNetUnfolder]: For 244867/247869 co-relation queries the response was YES. [2023-09-01 07:44:14,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456016 conditions, 130830 events. 72999/130830 cut-off events. For 244867/247869 co-relation queries the response was YES. Maximal size of possible extension queue 4452. Compared 1382426 event pairs, 47282 based on Foata normal form. 3956/122203 useless extension candidates. Maximal degree in co-relation 455969. Up to 98621 conditions per place. [2023-09-01 07:44:14,996 INFO L137 encePairwiseOnDemand]: 653/662 looper letters, 314 selfloop transitions, 26 changer transitions 24/368 dead transitions. [2023-09-01 07:44:14,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 368 transitions, 4494 flow [2023-09-01 07:44:14,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 07:44:14,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 07:44:14,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3416 transitions. [2023-09-01 07:44:14,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4300100704934542 [2023-09-01 07:44:14,999 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3416 transitions. [2023-09-01 07:44:14,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3416 transitions. [2023-09-01 07:44:15,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:44:15,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3416 transitions. [2023-09-01 07:44:15,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 284.6666666666667) internal successors, (3416), 12 states have internal predecessors, (3416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:44:15,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 662.0) internal successors, (8606), 13 states have internal predecessors, (8606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:44:15,009 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 662.0) internal successors, (8606), 13 states have internal predecessors, (8606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:44:15,009 INFO L175 Difference]: Start difference. First operand has 140 places, 206 transitions, 2520 flow. Second operand 12 states and 3416 transitions. [2023-09-01 07:44:15,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 368 transitions, 4494 flow [2023-09-01 07:44:18,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 368 transitions, 4484 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:44:18,267 INFO L231 Difference]: Finished difference. Result has 154 places, 212 transitions, 2630 flow [2023-09-01 07:44:18,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2630, PETRI_PLACES=154, PETRI_TRANSITIONS=212} [2023-09-01 07:44:18,267 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 101 predicate places. [2023-09-01 07:44:18,268 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 212 transitions, 2630 flow [2023-09-01 07:44:18,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 276.0) internal successors, (2484), 9 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:44:18,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:44:18,268 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:44:18,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-09-01 07:44:18,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:44:18,469 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:44:18,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:44:18,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1175472394, now seen corresponding path program 2 times [2023-09-01 07:44:18,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:44:18,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414191772] [2023-09-01 07:44:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:44:18,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:44:18,482 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:44:18,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1835698166] [2023-09-01 07:44:18,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:44:18,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:44:18,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:44:18,484 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:44:18,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-09-01 07:44:18,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:44:18,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:44:18,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-01 07:44:18,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:44:18,998 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-09-01 07:44:18,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:44:19,198 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-09-01 07:44:19,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:44:19,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414191772] [2023-09-01 07:44:19,198 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:44:19,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835698166] [2023-09-01 07:44:19,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835698166] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:44:19,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 07:44:19,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-09-01 07:44:19,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745311360] [2023-09-01 07:44:19,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 07:44:19,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 07:44:19,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:44:19,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 07:44:19,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-09-01 07:44:21,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 662 [2023-09-01 07:44:21,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 212 transitions, 2630 flow. Second operand has 12 states, 12 states have (on average 276.0) internal successors, (3312), 12 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:44:21,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:44:21,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 662 [2023-09-01 07:44:21,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:44:43,469 INFO L130 PetriNetUnfolder]: 77989/138405 cut-off events. [2023-09-01 07:44:43,470 INFO L131 PetriNetUnfolder]: For 341093/341251 co-relation queries the response was YES. [2023-09-01 07:44:44,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523579 conditions, 138405 events. 77989/138405 cut-off events. For 341093/341251 co-relation queries the response was YES. Maximal size of possible extension queue 4129. Compared 1403927 event pairs, 35508 based on Foata normal form. 158/127708 useless extension candidates. Maximal degree in co-relation 523527. Up to 80879 conditions per place. [2023-09-01 07:44:44,987 INFO L137 encePairwiseOnDemand]: 654/662 looper letters, 226 selfloop transitions, 20 changer transitions 29/277 dead transitions. [2023-09-01 07:44:44,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 277 transitions, 3613 flow [2023-09-01 07:44:44,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 07:44:44,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 07:44:44,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2275 transitions. [2023-09-01 07:44:44,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42956948640483383 [2023-09-01 07:44:44,991 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2275 transitions. [2023-09-01 07:44:44,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2275 transitions. [2023-09-01 07:44:44,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:44:44,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2275 transitions. [2023-09-01 07:44:44,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 284.375) internal successors, (2275), 8 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:44:44,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 662.0) internal successors, (5958), 9 states have internal predecessors, (5958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:44:44,998 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 662.0) internal successors, (5958), 9 states have internal predecessors, (5958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:44:44,998 INFO L175 Difference]: Start difference. First operand has 154 places, 212 transitions, 2630 flow. Second operand 8 states and 2275 transitions. [2023-09-01 07:44:44,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 277 transitions, 3613 flow [2023-09-01 07:44:47,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 277 transitions, 3582 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-09-01 07:44:47,905 INFO L231 Difference]: Finished difference. Result has 159 places, 206 transitions, 2627 flow [2023-09-01 07:44:47,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=2595, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2627, PETRI_PLACES=159, PETRI_TRANSITIONS=206} [2023-09-01 07:44:47,905 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 106 predicate places. [2023-09-01 07:44:47,906 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 206 transitions, 2627 flow [2023-09-01 07:44:47,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 276.0) internal successors, (3312), 12 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:44:47,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:44:47,906 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1] [2023-09-01 07:44:47,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-09-01 07:44:48,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-09-01 07:44:48,107 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:44:48,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:44:48,107 INFO L85 PathProgramCache]: Analyzing trace with hash 233761103, now seen corresponding path program 2 times [2023-09-01 07:44:48,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:44:48,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188728487] [2023-09-01 07:44:48,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:44:48,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:44:48,130 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:44:48,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2074730395] [2023-09-01 07:44:48,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:44:48,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:44:48,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:44:48,132 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:44:48,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-09-01 07:44:48,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:44:48,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:44:48,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 07:44:48,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:44:48,328 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-09-01 07:44:48,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:44:48,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:44:48,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188728487] [2023-09-01 07:44:48,329 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:44:48,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074730395] [2023-09-01 07:44:48,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074730395] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:44:48,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:44:48,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:44:48,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471849549] [2023-09-01 07:44:48,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:44:48,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:44:48,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:44:48,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:44:48,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 07:44:48,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 662 [2023-09-01 07:44:48,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 206 transitions, 2627 flow. Second operand has 4 states, 4 states have (on average 282.5) internal successors, (1130), 4 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:44:48,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:44:48,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 662 [2023-09-01 07:44:48,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:45:04,338 INFO L130 PetriNetUnfolder]: 62132/112211 cut-off events. [2023-09-01 07:45:04,338 INFO L131 PetriNetUnfolder]: For 347179/357345 co-relation queries the response was YES. [2023-09-01 07:45:05,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425641 conditions, 112211 events. 62132/112211 cut-off events. For 347179/357345 co-relation queries the response was YES. Maximal size of possible extension queue 4287. Compared 1190667 event pairs, 51924 based on Foata normal form. 10193/111901 useless extension candidates. Maximal degree in co-relation 425586. Up to 111285 conditions per place. [2023-09-01 07:45:05,578 INFO L137 encePairwiseOnDemand]: 658/662 looper letters, 172 selfloop transitions, 26 changer transitions 0/204 dead transitions. [2023-09-01 07:45:05,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 204 transitions, 2968 flow [2023-09-01 07:45:05,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:45:05,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:45:05,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1159 transitions. [2023-09-01 07:45:05,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43768882175226587 [2023-09-01 07:45:05,580 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1159 transitions. [2023-09-01 07:45:05,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1159 transitions. [2023-09-01 07:45:05,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:45:05,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1159 transitions. [2023-09-01 07:45:05,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 289.75) internal successors, (1159), 4 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:45:05,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 662.0) internal successors, (3310), 5 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:45:05,583 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 662.0) internal successors, (3310), 5 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:45:05,583 INFO L175 Difference]: Start difference. First operand has 159 places, 206 transitions, 2627 flow. Second operand 4 states and 1159 transitions. [2023-09-01 07:45:05,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 204 transitions, 2968 flow [2023-09-01 07:45:12,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 204 transitions, 2896 flow, removed 17 selfloop flow, removed 10 redundant places. [2023-09-01 07:45:12,855 INFO L231 Difference]: Finished difference. Result has 142 places, 204 transitions, 2552 flow [2023-09-01 07:45:12,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=2500, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2552, PETRI_PLACES=142, PETRI_TRANSITIONS=204} [2023-09-01 07:45:12,856 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 89 predicate places. [2023-09-01 07:45:12,856 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 204 transitions, 2552 flow [2023-09-01 07:45:12,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 282.5) internal successors, (1130), 4 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:45:12,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:45:12,857 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1] [2023-09-01 07:45:12,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-09-01 07:45:13,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-09-01 07:45:13,063 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:45:13,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:45:13,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1317517276, now seen corresponding path program 2 times [2023-09-01 07:45:13,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:45:13,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278164847] [2023-09-01 07:45:13,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:45:13,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:45:13,085 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:45:13,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086912055] [2023-09-01 07:45:13,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:45:13,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:45:13,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:45:13,087 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:45:13,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-09-01 07:45:13,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:45:13,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:45:13,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 07:45:13,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:45:14,486 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-09-01 07:45:14,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:45:14,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:45:14,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278164847] [2023-09-01 07:45:14,487 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:45:14,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086912055] [2023-09-01 07:45:14,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086912055] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:45:14,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:45:14,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:45:14,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487660396] [2023-09-01 07:45:14,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:45:14,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:45:14,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:45:14,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:45:14,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 07:45:16,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:45:18,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:45:20,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:45:22,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:45:24,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:45:26,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:45:28,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:45:30,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:45:33,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:45:35,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:45:37,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:45:39,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:45:40,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:45:42,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:45:44,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:45:46,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:45:46,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 662 [2023-09-01 07:45:46,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 204 transitions, 2552 flow. Second operand has 4 states, 4 states have (on average 270.25) internal successors, (1081), 4 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:45:46,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:45:46,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 662 [2023-09-01 07:45:46,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:45:50,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:45:52,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:45:54,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:45:56,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:45:58,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:46:00,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:46:02,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:46:04,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:46:07,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:46:09,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:46:10,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-09-01 07:46:25,238 INFO L130 PetriNetUnfolder]: 62132/112210 cut-off events. [2023-09-01 07:46:25,238 INFO L131 PetriNetUnfolder]: For 196951/207117 co-relation queries the response was YES. [2023-09-01 07:46:26,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390415 conditions, 112210 events. 62132/112210 cut-off events. For 196951/207117 co-relation queries the response was YES. Maximal size of possible extension queue 4345. Compared 1191115 event pairs, 51924 based on Foata normal form. 10167/111732 useless extension candidates. Maximal degree in co-relation 390366. Up to 111273 conditions per place. [2023-09-01 07:46:26,393 INFO L137 encePairwiseOnDemand]: 659/662 looper letters, 182 selfloop transitions, 15 changer transitions 0/203 dead transitions. [2023-09-01 07:46:26,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 203 transitions, 2919 flow [2023-09-01 07:46:26,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:46:26,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:46:26,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1110 transitions. [2023-09-01 07:46:26,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41918429003021146 [2023-09-01 07:46:26,395 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1110 transitions. [2023-09-01 07:46:26,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1110 transitions. [2023-09-01 07:46:26,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:46:26,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1110 transitions. [2023-09-01 07:46:26,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 277.5) internal successors, (1110), 4 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:46:26,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 662.0) internal successors, (3310), 5 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:46:26,399 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 662.0) internal successors, (3310), 5 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:46:26,399 INFO L175 Difference]: Start difference. First operand has 142 places, 204 transitions, 2552 flow. Second operand 4 states and 1110 transitions. [2023-09-01 07:46:26,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 203 transitions, 2919 flow [2023-09-01 07:46:28,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 203 transitions, 2654 flow, removed 13 selfloop flow, removed 12 redundant places. [2023-09-01 07:46:28,257 INFO L231 Difference]: Finished difference. Result has 131 places, 203 transitions, 2290 flow [2023-09-01 07:46:28,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=2260, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2290, PETRI_PLACES=131, PETRI_TRANSITIONS=203} [2023-09-01 07:46:28,258 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 78 predicate places. [2023-09-01 07:46:28,258 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 203 transitions, 2290 flow [2023-09-01 07:46:28,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 270.25) internal successors, (1081), 4 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:46:28,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:46:28,258 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:46:28,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-09-01 07:46:28,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-09-01 07:46:28,461 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:46:28,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:46:28,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1589643084, now seen corresponding path program 2 times [2023-09-01 07:46:28,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:46:28,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209504371] [2023-09-01 07:46:28,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:46:28,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:46:28,473 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:46:28,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1970541857] [2023-09-01 07:46:28,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:46:28,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:46:28,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:46:28,475 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:46:28,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-09-01 07:46:28,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:46:28,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:46:28,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:46:28,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:46:28,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 07:46:28,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:46:28,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 07:46:28,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:46:28,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209504371] [2023-09-01 07:46:28,692 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:46:28,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970541857] [2023-09-01 07:46:28,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970541857] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:46:28,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 07:46:28,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2023-09-01 07:46:28,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992765659] [2023-09-01 07:46:28,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 07:46:28,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:46:28,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:46:28,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:46:28,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 07:46:28,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 662 [2023-09-01 07:46:28,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 203 transitions, 2290 flow. Second operand has 4 states, 4 states have (on average 284.5) internal successors, (1138), 4 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:46:28,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:46:28,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 662 [2023-09-01 07:46:28,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:46:41,594 INFO L130 PetriNetUnfolder]: 61214/109910 cut-off events. [2023-09-01 07:46:41,594 INFO L131 PetriNetUnfolder]: For 198465/208465 co-relation queries the response was YES. [2023-09-01 07:46:42,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388231 conditions, 109910 events. 61214/109910 cut-off events. For 198465/208465 co-relation queries the response was YES. Maximal size of possible extension queue 3959. Compared 1149119 event pairs, 10922 based on Foata normal form. 10000/114113 useless extension candidates. Maximal degree in co-relation 388192. Up to 80008 conditions per place. [2023-09-01 07:46:42,546 INFO L137 encePairwiseOnDemand]: 657/662 looper letters, 149 selfloop transitions, 7 changer transitions 58/217 dead transitions. [2023-09-01 07:46:42,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 217 transitions, 2797 flow [2023-09-01 07:46:42,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:46:42,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:46:42,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1168 transitions. [2023-09-01 07:46:42,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44108761329305135 [2023-09-01 07:46:42,548 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1168 transitions. [2023-09-01 07:46:42,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1168 transitions. [2023-09-01 07:46:42,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:46:42,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1168 transitions. [2023-09-01 07:46:42,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:46:42,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 662.0) internal successors, (3310), 5 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:46:42,550 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 662.0) internal successors, (3310), 5 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:46:42,550 INFO L175 Difference]: Start difference. First operand has 131 places, 203 transitions, 2290 flow. Second operand 4 states and 1168 transitions. [2023-09-01 07:46:42,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 217 transitions, 2797 flow [2023-09-01 07:46:45,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 217 transitions, 2781 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:46:45,111 INFO L231 Difference]: Finished difference. Result has 131 places, 144 transitions, 1494 flow [2023-09-01 07:46:45,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=2270, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1494, PETRI_PLACES=131, PETRI_TRANSITIONS=144} [2023-09-01 07:46:45,112 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 78 predicate places. [2023-09-01 07:46:45,112 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 144 transitions, 1494 flow [2023-09-01 07:46:45,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 284.5) internal successors, (1138), 4 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:46:45,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:46:45,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:46:45,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-09-01 07:46:45,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-09-01 07:46:45,317 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:46:45,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:46:45,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1483053211, now seen corresponding path program 1 times [2023-09-01 07:46:45,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:46:45,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846355713] [2023-09-01 07:46:45,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:46:45,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:46:45,328 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:46:45,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090682854] [2023-09-01 07:46:45,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:46:45,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:46:45,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:46:45,330 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:46:45,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-09-01 07:46:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:46:45,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 07:46:45,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:46:45,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:46:45,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:46:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:46:45,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:46:45,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846355713] [2023-09-01 07:46:45,588 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:46:45,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090682854] [2023-09-01 07:46:45,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090682854] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:46:45,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 07:46:45,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-09-01 07:46:45,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884679797] [2023-09-01 07:46:45,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 07:46:45,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 07:46:45,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:46:45,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 07:46:45,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-09-01 07:46:46,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 662 [2023-09-01 07:46:46,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 144 transitions, 1494 flow. Second operand has 11 states, 11 states have (on average 267.09090909090907) internal successors, (2938), 11 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:46:46,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:46:46,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 662 [2023-09-01 07:46:46,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:47:00,190 INFO L130 PetriNetUnfolder]: 66307/117912 cut-off events. [2023-09-01 07:47:00,190 INFO L131 PetriNetUnfolder]: For 227449/238061 co-relation queries the response was YES. [2023-09-01 07:47:00,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423507 conditions, 117912 events. 66307/117912 cut-off events. For 227449/238061 co-relation queries the response was YES. Maximal size of possible extension queue 4431. Compared 1235168 event pairs, 30891 based on Foata normal form. 16861/128267 useless extension candidates. Maximal degree in co-relation 423468. Up to 59303 conditions per place. [2023-09-01 07:47:01,242 INFO L137 encePairwiseOnDemand]: 650/662 looper letters, 227 selfloop transitions, 92 changer transitions 13/337 dead transitions. [2023-09-01 07:47:01,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 337 transitions, 3490 flow [2023-09-01 07:47:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 07:47:01,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 07:47:01,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3870 transitions. [2023-09-01 07:47:01,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175658178679327 [2023-09-01 07:47:01,248 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3870 transitions. [2023-09-01 07:47:01,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3870 transitions. [2023-09-01 07:47:01,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:47:01,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3870 transitions. [2023-09-01 07:47:01,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 276.42857142857144) internal successors, (3870), 14 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:47:01,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 662.0) internal successors, (9930), 15 states have internal predecessors, (9930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:47:01,260 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 662.0) internal successors, (9930), 15 states have internal predecessors, (9930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:47:01,260 INFO L175 Difference]: Start difference. First operand has 131 places, 144 transitions, 1494 flow. Second operand 14 states and 3870 transitions. [2023-09-01 07:47:01,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 337 transitions, 3490 flow [2023-09-01 07:47:21,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 337 transitions, 3116 flow, removed 64 selfloop flow, removed 12 redundant places. [2023-09-01 07:47:21,567 INFO L231 Difference]: Finished difference. Result has 134 places, 188 transitions, 2020 flow [2023-09-01 07:47:21,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2020, PETRI_PLACES=134, PETRI_TRANSITIONS=188} [2023-09-01 07:47:21,567 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 81 predicate places. [2023-09-01 07:47:21,568 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 188 transitions, 2020 flow [2023-09-01 07:47:21,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 267.09090909090907) internal successors, (2938), 11 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:47:21,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:47:21,568 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:47:21,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-09-01 07:47:21,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-09-01 07:47:21,773 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:47:21,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:47:21,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1166465563, now seen corresponding path program 2 times [2023-09-01 07:47:21,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:47:21,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709040362] [2023-09-01 07:47:21,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:47:21,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:47:21,785 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 07:47:21,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1214965662] [2023-09-01 07:47:21,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:47:21,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:47:21,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:47:21,787 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:47:21,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-09-01 07:47:22,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:47:22,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:47:22,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:47:22,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:47:22,044 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 07:47:22,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:47:22,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:47:22,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709040362] [2023-09-01 07:47:22,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 07:47:22,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214965662] [2023-09-01 07:47:22,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214965662] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:47:22,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:47:22,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:47:22,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727817365] [2023-09-01 07:47:22,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:47:22,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:47:22,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:47:22,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:47:22,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 07:47:22,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 662 [2023-09-01 07:47:22,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 188 transitions, 2020 flow. Second operand has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:47:22,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:47:22,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 662 [2023-09-01 07:47:22,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand