./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 TOGETHER --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 TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:01:35,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:01:35,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:01:35,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:01:35,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:01:35,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:01:35,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:01:35,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:01:35,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:01:35,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:01:35,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:01:35,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:01:35,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:01:35,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:01:35,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:01:35,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:01:35,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:01:35,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:01:35,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:01:35,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:01:35,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:01:35,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:01:35,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:01:35,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:01:35,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:01:35,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:01:35,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:01:35,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:01:35,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:01:35,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:01:35,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:01:35,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:01:35,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:01:35,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:01:35,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:01:35,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:01:35,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:01:35,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:01:35,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:01:35,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:01:35,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:01:35,999 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:01:36,037 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:01:36,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:01:36,038 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:01:36,038 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:01:36,039 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:01:36,039 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:01:36,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:01:36,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:01:36,040 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:01:36,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:01:36,041 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:01:36,041 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:01:36,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:01:36,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:01:36,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:01:36,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:01:36,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:01:36,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:01:36,043 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:01:36,043 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:01:36,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:01:36,043 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:01:36,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:01:36,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:01:36,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:01:36,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:01:36,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:01:36,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:01:36,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:01:36,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:01:36,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:01:36,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:01:36,045 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:01:36,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:01:36,046 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:01:36,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:01:36,046 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:01:36,046 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:01:36,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:01:36,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:01:36,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:01:36,363 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:01:36,363 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:01:36,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c [2023-08-30 15:01:37,487 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:01:37,704 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:01:37,704 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c [2023-08-30 15:01:37,714 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/912e2f714/46460a395392413ea3a75956867945f1/FLAG67bc2500a [2023-08-30 15:01:37,733 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/912e2f714/46460a395392413ea3a75956867945f1 [2023-08-30 15:01:37,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:01:37,737 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:01:37,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:01:37,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:01:37,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:01:37,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:01:37" (1/1) ... [2023-08-30 15:01:37,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aef9cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:01:37, skipping insertion in model container [2023-08-30 15:01:37,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:01:37" (1/1) ... [2023-08-30 15:01:37,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:01:37,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:01:37,963 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] [2023-08-30 15:01:37,971 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:01:37,984 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:01:38,012 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] [2023-08-30 15:01:38,015 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:01:38,032 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:01:38,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:01:38 WrapperNode [2023-08-30 15:01:38,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:01:38,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:01:38,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:01:38,035 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:01:38,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:01:38" (1/1) ... [2023-08-30 15:01:38,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:01:38" (1/1) ... [2023-08-30 15:01:38,098 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 213 [2023-08-30 15:01:38,098 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:01:38,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:01:38,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:01:38,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:01:38,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:01:38" (1/1) ... [2023-08-30 15:01:38,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:01:38" (1/1) ... [2023-08-30 15:01:38,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:01:38" (1/1) ... [2023-08-30 15:01:38,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:01:38" (1/1) ... [2023-08-30 15:01:38,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:01:38" (1/1) ... [2023-08-30 15:01:38,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:01:38" (1/1) ... [2023-08-30 15:01:38,153 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:01:38" (1/1) ... [2023-08-30 15:01:38,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:01:38" (1/1) ... [2023-08-30 15:01:38,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:01:38,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:01:38,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:01:38,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:01:38,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:01:38" (1/1) ... [2023-08-30 15:01:38,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:01:38,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:01:38,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 15:01:38,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 15:01:38,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:01:38,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 15:01:38,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:01:38,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:01:38,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:01:38,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 15:01:38,285 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:01:38,286 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:01:38,286 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:01:38,286 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:01:38,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:01:38,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:01:38,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:01:38,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:01:38,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:01:38,288 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 15:01:38,470 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:01:38,471 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:01:38,873 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:01:38,882 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:01:38,883 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-30 15:01:38,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:01:38 BoogieIcfgContainer [2023-08-30 15:01:38,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:01:38,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:01:38,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:01:38,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:01:38,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:01:37" (1/3) ... [2023-08-30 15:01:38,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ad7de2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:01:38, skipping insertion in model container [2023-08-30 15:01:38,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:01:38" (2/3) ... [2023-08-30 15:01:38,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ad7de2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:01:38, skipping insertion in model container [2023-08-30 15:01:38,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:01:38" (3/3) ... [2023-08-30 15:01:38,919 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2023-08-30 15:01:38,927 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:01:38,948 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:01:38,949 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-08-30 15:01:38,949 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:01:39,067 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 15:01:39,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 313 transitions, 642 flow [2023-08-30 15:01:39,241 INFO L130 PetriNetUnfolder]: 27/311 cut-off events. [2023-08-30 15:01:39,244 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:01:39,250 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. [2023-08-30 15:01:39,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 313 transitions, 642 flow [2023-08-30 15:01:39,261 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 271 places, 290 transitions, 592 flow [2023-08-30 15:01:39,265 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:01:39,281 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 271 places, 290 transitions, 592 flow [2023-08-30 15:01:39,284 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 271 places, 290 transitions, 592 flow [2023-08-30 15:01:39,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 290 transitions, 592 flow [2023-08-30 15:01:39,336 INFO L130 PetriNetUnfolder]: 26/290 cut-off events. [2023-08-30 15:01:39,336 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:01:39,337 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. [2023-08-30 15:01:39,341 INFO L119 LiptonReduction]: Number of co-enabled transitions 1916 [2023-08-30 15:02:00,906 INFO L134 LiptonReduction]: Checked pairs total: 3958 [2023-08-30 15:02:00,906 INFO L136 LiptonReduction]: Total number of compositions: 349 [2023-08-30 15:02:00,921 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:02:00,926 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;@23317235, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:02:00,926 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-08-30 15:02:00,927 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 15:02:00,927 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:02:00,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:02:00,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 15:02:00,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:02:00,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:02:00,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1179, now seen corresponding path program 1 times [2023-08-30 15:02:00,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:02:00,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758955299] [2023-08-30 15:02:00,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:00,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:02:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:02:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:02:01,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:02:01,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758955299] [2023-08-30 15:02:01,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758955299] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:02:01,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:02:01,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 15:02:01,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971032257] [2023-08-30 15:02:01,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:02:01,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 15:02:01,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:02:01,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 15:02:01,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 15:02:01,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 662 [2023-08-30 15:02:01,064 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) [2023-08-30 15:02:01,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:02:01,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 662 [2023-08-30 15:02:01,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:02:01,211 INFO L130 PetriNetUnfolder]: 342/566 cut-off events. [2023-08-30 15:02:01,211 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-08-30 15:02:01,212 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. [2023-08-30 15:02:01,216 INFO L137 encePairwiseOnDemand]: 656/662 looper letters, 45 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2023-08-30 15:02:01,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 47 transitions, 196 flow [2023-08-30 15:02:01,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 15:02:01,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 15:02:01,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 629 transitions. [2023-08-30 15:02:01,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47507552870090636 [2023-08-30 15:02:01,232 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 629 transitions. [2023-08-30 15:02:01,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 629 transitions. [2023-08-30 15:02:01,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:02:01,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 629 transitions. [2023-08-30 15:02:01,240 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) [2023-08-30 15:02:01,245 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) [2023-08-30 15:02:01,246 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) [2023-08-30 15:02:01,248 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 118 flow. Second operand 2 states and 629 transitions. [2023-08-30 15:02:01,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 47 transitions, 196 flow [2023-08-30 15:02:01,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 47 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 15:02:01,253 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 98 flow [2023-08-30 15:02:01,254 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} [2023-08-30 15:02:01,257 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2023-08-30 15:02:01,258 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 98 flow [2023-08-30 15:02:01,258 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) [2023-08-30 15:02:01,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:02:01,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:02:01,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:02:01,259 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:02:01,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:02:01,260 INFO L85 PathProgramCache]: Analyzing trace with hash 37554, now seen corresponding path program 1 times [2023-08-30 15:02:01,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:02:01,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883397739] [2023-08-30 15:02:01,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:01,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:02:01,272 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:02:01,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935546563] [2023-08-30 15:02:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:01,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:02:01,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:02:01,276 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:02:01,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 15:02:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:02:01,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 15:02:01,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:02:01,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:02:01,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:02:01,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:02:01,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883397739] [2023-08-30 15:02:01,391 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:02:01,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935546563] [2023-08-30 15:02:01,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935546563] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:02:01,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:02:01,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:02:01,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459754208] [2023-08-30 15:02:01,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:02:01,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:02:01,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:02:01,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:02:01,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:02:01,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-08-30 15:02:01,437 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) [2023-08-30 15:02:01,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:02:01,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-08-30 15:02:01,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:02:01,556 INFO L130 PetriNetUnfolder]: 342/563 cut-off events. [2023-08-30 15:02:01,556 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-30 15:02:01,557 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. [2023-08-30 15:02:01,560 INFO L137 encePairwiseOnDemand]: 658/662 looper letters, 41 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-08-30 15:02:01,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 176 flow [2023-08-30 15:02:01,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:02:01,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:02:01,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 885 transitions. [2023-08-30 15:02:01,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44561933534743203 [2023-08-30 15:02:01,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 885 transitions. [2023-08-30 15:02:01,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 885 transitions. [2023-08-30 15:02:01,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:02:01,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 885 transitions. [2023-08-30 15:02:01,566 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) [2023-08-30 15:02:01,569 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) [2023-08-30 15:02:01,571 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) [2023-08-30 15:02:01,571 INFO L175 Difference]: Start difference. First operand has 44 places, 47 transitions, 98 flow. Second operand 3 states and 885 transitions. [2023-08-30 15:02:01,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 176 flow [2023-08-30 15:02:01,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 176 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 15:02:01,572 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 94 flow [2023-08-30 15:02:01,572 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} [2023-08-30 15:02:01,573 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2023-08-30 15:02:01,573 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 94 flow [2023-08-30 15:02:01,574 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) [2023-08-30 15:02:01,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:02:01,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:02:01,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 15:02:01,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:02:01,780 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:02:01,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:02:01,782 INFO L85 PathProgramCache]: Analyzing trace with hash 37555, now seen corresponding path program 1 times [2023-08-30 15:02:01,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:02:01,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964718504] [2023-08-30 15:02:01,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:01,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:02:01,811 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:02:01,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2147095865] [2023-08-30 15:02:01,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:01,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:02:01,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:02:01,817 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:02:01,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 15:02:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:02:01,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 15:02:01,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:02:01,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:02:01,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:02:01,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:02:01,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964718504] [2023-08-30 15:02:01,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:02:01,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147095865] [2023-08-30 15:02:01,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147095865] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:02:01,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:02:01,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:02:01,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828819095] [2023-08-30 15:02:01,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:02:01,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:02:01,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:02:01,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:02:01,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:02:01,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-08-30 15:02:01,929 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) [2023-08-30 15:02:01,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:02:01,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-08-30 15:02:01,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:02:02,145 INFO L130 PetriNetUnfolder]: 683/1122 cut-off events. [2023-08-30 15:02:02,146 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-08-30 15:02:02,148 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. [2023-08-30 15:02:02,154 INFO L137 encePairwiseOnDemand]: 653/662 looper letters, 74 selfloop transitions, 6 changer transitions 0/82 dead transitions. [2023-08-30 15:02:02,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 82 transitions, 334 flow [2023-08-30 15:02:02,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:02:02,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:02:02,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 923 transitions. [2023-08-30 15:02:02,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4647532729103726 [2023-08-30 15:02:02,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 923 transitions. [2023-08-30 15:02:02,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 923 transitions. [2023-08-30 15:02:02,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:02:02,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 923 transitions. [2023-08-30 15:02:02,161 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) [2023-08-30 15:02:02,165 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) [2023-08-30 15:02:02,166 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) [2023-08-30 15:02:02,166 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 94 flow. Second operand 3 states and 923 transitions. [2023-08-30 15:02:02,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 82 transitions, 334 flow [2023-08-30 15:02:02,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 82 transitions, 333 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:02:02,169 INFO L231 Difference]: Finished difference. Result has 46 places, 49 transitions, 143 flow [2023-08-30 15:02:02,170 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} [2023-08-30 15:02:02,171 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -7 predicate places. [2023-08-30 15:02:02,171 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 49 transitions, 143 flow [2023-08-30 15:02:02,172 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) [2023-08-30 15:02:02,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:02:02,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:02:02,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 15:02:02,380 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 [2023-08-30 15:02:02,381 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:02:02,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:02:02,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1165738, now seen corresponding path program 1 times [2023-08-30 15:02:02,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:02:02,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147021696] [2023-08-30 15:02:02,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:02,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:02:02,391 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:02:02,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1300748167] [2023-08-30 15:02:02,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:02,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:02:02,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:02:02,393 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:02:02,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 15:02:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:02:02,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:02:02,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:02:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:02:02,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:02:02,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:02:02,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:02:02,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147021696] [2023-08-30 15:02:02,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:02:02,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300748167] [2023-08-30 15:02:02,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300748167] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:02:02,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 15:02:02,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-30 15:02:02,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869571160] [2023-08-30 15:02:02,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 15:02:02,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 15:02:02,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:02:02,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 15:02:02,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:02:02,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-08-30 15:02:02,574 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) [2023-08-30 15:02:02,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:02:02,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-08-30 15:02:02,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:02:03,105 INFO L130 PetriNetUnfolder]: 1706/2799 cut-off events. [2023-08-30 15:02:03,106 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2023-08-30 15:02:03,109 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. [2023-08-30 15:02:03,120 INFO L137 encePairwiseOnDemand]: 653/662 looper letters, 173 selfloop transitions, 21 changer transitions 0/196 dead transitions. [2023-08-30 15:02:03,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 196 transitions, 883 flow [2023-08-30 15:02:03,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:02:03,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:02:03,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1883 transitions. [2023-08-30 15:02:03,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4740684793554884 [2023-08-30 15:02:03,125 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1883 transitions. [2023-08-30 15:02:03,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1883 transitions. [2023-08-30 15:02:03,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:02:03,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1883 transitions. [2023-08-30 15:02:03,130 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) [2023-08-30 15:02:03,136 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) [2023-08-30 15:02:03,138 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) [2023-08-30 15:02:03,138 INFO L175 Difference]: Start difference. First operand has 46 places, 49 transitions, 143 flow. Second operand 6 states and 1883 transitions. [2023-08-30 15:02:03,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 196 transitions, 883 flow [2023-08-30 15:02:03,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 196 transitions, 859 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:02:03,142 INFO L231 Difference]: Finished difference. Result has 52 places, 64 transitions, 281 flow [2023-08-30 15:02:03,142 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} [2023-08-30 15:02:03,143 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -1 predicate places. [2023-08-30 15:02:03,143 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 64 transitions, 281 flow [2023-08-30 15:02:03,144 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) [2023-08-30 15:02:03,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:02:03,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 15:02:03,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 15:02:03,355 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 [2023-08-30 15:02:03,355 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:02:03,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:02:03,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1121067790, now seen corresponding path program 1 times [2023-08-30 15:02:03,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:02:03,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114915196] [2023-08-30 15:02:03,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:03,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:02:03,366 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:02:03,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [585795053] [2023-08-30 15:02:03,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:03,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:02:03,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:02:03,368 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:02:03,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 15:02:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:02:03,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 15:02:03,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:02:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:02:03,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:02:03,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:02:03,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114915196] [2023-08-30 15:02:03,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:02:03,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585795053] [2023-08-30 15:02:03,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585795053] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:02:03,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:02:03,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:02:03,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000941085] [2023-08-30 15:02:03,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:02:03,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:02:03,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:02:03,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:02:03,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:02:03,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 662 [2023-08-30 15:02:03,472 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) [2023-08-30 15:02:03,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:02:03,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 662 [2023-08-30 15:02:03,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:02:03,830 INFO L130 PetriNetUnfolder]: 1706/2794 cut-off events. [2023-08-30 15:02:03,830 INFO L131 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2023-08-30 15:02:03,833 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. [2023-08-30 15:02:03,843 INFO L137 encePairwiseOnDemand]: 660/662 looper letters, 60 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2023-08-30 15:02:03,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 401 flow [2023-08-30 15:02:03,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:02:03,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:02:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 900 transitions. [2023-08-30 15:02:03,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45317220543806647 [2023-08-30 15:02:03,846 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 900 transitions. [2023-08-30 15:02:03,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 900 transitions. [2023-08-30 15:02:03,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:02:03,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 900 transitions. [2023-08-30 15:02:03,849 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) [2023-08-30 15:02:03,851 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) [2023-08-30 15:02:03,853 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) [2023-08-30 15:02:03,853 INFO L175 Difference]: Start difference. First operand has 52 places, 64 transitions, 281 flow. Second operand 3 states and 900 transitions. [2023-08-30 15:02:03,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 401 flow [2023-08-30 15:02:03,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 63 transitions, 371 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 15:02:03,861 INFO L231 Difference]: Finished difference. Result has 52 places, 63 transitions, 251 flow [2023-08-30 15:02:03,861 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} [2023-08-30 15:02:03,865 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -1 predicate places. [2023-08-30 15:02:03,865 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 63 transitions, 251 flow [2023-08-30 15:02:03,866 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) [2023-08-30 15:02:03,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:02:03,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 15:02:03,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 15:02:04,071 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 [2023-08-30 15:02:04,071 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:02:04,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:02:04,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1121067815, now seen corresponding path program 1 times [2023-08-30 15:02:04,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:02:04,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912051202] [2023-08-30 15:02:04,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:04,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:02:04,084 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:02:04,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639508576] [2023-08-30 15:02:04,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:04,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:02:04,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:02:04,090 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) [2023-08-30 15:02:04,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 15:02:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:02:04,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 15:02:04,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:02:04,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:02:04,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:02:04,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:02:04,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912051202] [2023-08-30 15:02:04,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:02:04,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639508576] [2023-08-30 15:02:04,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639508576] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:02:04,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:02:04,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:02:04,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402527470] [2023-08-30 15:02:04,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:02:04,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:02:04,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:02:04,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:02:04,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:02:04,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 662 [2023-08-30 15:02:04,196 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) [2023-08-30 15:02:04,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:02:04,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 662 [2023-08-30 15:02:04,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:02:04,738 INFO L130 PetriNetUnfolder]: 3401/5560 cut-off events. [2023-08-30 15:02:04,738 INFO L131 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2023-08-30 15:02:04,744 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. [2023-08-30 15:02:04,766 INFO L137 encePairwiseOnDemand]: 659/662 looper letters, 100 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2023-08-30 15:02:04,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 104 transitions, 585 flow [2023-08-30 15:02:04,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:02:04,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:02:04,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 933 transitions. [2023-08-30 15:02:04,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697885196374622 [2023-08-30 15:02:04,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 933 transitions. [2023-08-30 15:02:04,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 933 transitions. [2023-08-30 15:02:04,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:02:04,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 933 transitions. [2023-08-30 15:02:04,773 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) [2023-08-30 15:02:04,777 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) [2023-08-30 15:02:04,778 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) [2023-08-30 15:02:04,778 INFO L175 Difference]: Start difference. First operand has 52 places, 63 transitions, 251 flow. Second operand 3 states and 933 transitions. [2023-08-30 15:02:04,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 104 transitions, 585 flow [2023-08-30 15:02:04,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 104 transitions, 584 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:02:04,782 INFO L231 Difference]: Finished difference. Result has 54 places, 64 transitions, 262 flow [2023-08-30 15:02:04,783 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} [2023-08-30 15:02:04,786 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2023-08-30 15:02:04,787 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 64 transitions, 262 flow [2023-08-30 15:02:04,787 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) [2023-08-30 15:02:04,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:02:04,787 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:02:04,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 15:02:04,993 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 [2023-08-30 15:02:04,996 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:02:04,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:02:04,999 INFO L85 PathProgramCache]: Analyzing trace with hash 370284659, now seen corresponding path program 2 times [2023-08-30 15:02:04,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:02:04,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041586147] [2023-08-30 15:02:04,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:05,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:02:05,017 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:02:05,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142099150] [2023-08-30 15:02:05,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:02:05,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:02:05,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:02:05,020 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) [2023-08-30 15:02:05,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 15:02:05,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:02:05,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:02:05,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 15:02:05,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:02:06,078 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:02:06,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:02:06,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:02:06,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041586147] [2023-08-30 15:02:06,078 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:02:06,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142099150] [2023-08-30 15:02:06,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142099150] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:02:06,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:02:06,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:02:06,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752755270] [2023-08-30 15:02:06,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:02:06,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:02:06,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:02:06,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:02:06,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:02:11,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-08-30 15:02:11,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-08-30 15:02:11,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 64 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 281.0) internal successors, (843), 3 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:02:11,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:02:11,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-08-30 15:02:11,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:02:14,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-08-30 15:02:16,441 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] [2023-08-30 15:02:18,134 INFO L130 PetriNetUnfolder]: 3401/5559 cut-off events. [2023-08-30 15:02:18,134 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2023-08-30 15:02:18,142 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. [2023-08-30 15:02:18,168 INFO L137 encePairwiseOnDemand]: 659/662 looper letters, 55 selfloop transitions, 6 changer transitions 0/63 dead transitions. [2023-08-30 15:02:18,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 63 transitions, 374 flow [2023-08-30 15:02:18,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:02:18,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:02:18,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 881 transitions. [2023-08-30 15:02:18,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436052366565962 [2023-08-30 15:02:18,172 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 881 transitions. [2023-08-30 15:02:18,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 881 transitions. [2023-08-30 15:02:18,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:02:18,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 881 transitions. [2023-08-30 15:02:18,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:02:18,176 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) [2023-08-30 15:02:18,177 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) [2023-08-30 15:02:18,177 INFO L175 Difference]: Start difference. First operand has 54 places, 64 transitions, 262 flow. Second operand 3 states and 881 transitions. [2023-08-30 15:02:18,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 63 transitions, 374 flow [2023-08-30 15:02:18,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 63 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:02:18,180 INFO L231 Difference]: Finished difference. Result has 54 places, 63 transitions, 262 flow [2023-08-30 15:02:18,180 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} [2023-08-30 15:02:18,180 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2023-08-30 15:02:18,180 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 63 transitions, 262 flow [2023-08-30 15:02:18,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 281.0) internal successors, (843), 3 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:02:18,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:02:18,181 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 15:02:18,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 15:02:18,392 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 [2023-08-30 15:02:18,393 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:02:18,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:02:18,393 INFO L85 PathProgramCache]: Analyzing trace with hash -717067676, now seen corresponding path program 1 times [2023-08-30 15:02:18,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:02:18,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842026315] [2023-08-30 15:02:18,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:18,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:02:18,405 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:02:18,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1299239804] [2023-08-30 15:02:18,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:18,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:02:18,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:02:18,407 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) [2023-08-30 15:02:18,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 15:02:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:02:18,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:02:18,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:02:18,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:02:18,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:02:18,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:02:18,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842026315] [2023-08-30 15:02:18,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:02:18,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299239804] [2023-08-30 15:02:18,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299239804] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:02:18,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:02:18,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:02:18,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810536786] [2023-08-30 15:02:18,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:02:18,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:02:18,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:02:18,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:02:18,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:02:18,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 662 [2023-08-30 15:02:18,619 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) [2023-08-30 15:02:18,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:02:18,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 662 [2023-08-30 15:02:18,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:02:19,342 INFO L130 PetriNetUnfolder]: 4078/6664 cut-off events. [2023-08-30 15:02:19,342 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2023-08-30 15:02:19,351 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. [2023-08-30 15:02:19,375 INFO L137 encePairwiseOnDemand]: 656/662 looper letters, 114 selfloop transitions, 11 changer transitions 0/127 dead transitions. [2023-08-30 15:02:19,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 127 transitions, 664 flow [2023-08-30 15:02:19,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:02:19,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:02:19,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1208 transitions. [2023-08-30 15:02:19,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4561933534743202 [2023-08-30 15:02:19,380 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1208 transitions. [2023-08-30 15:02:19,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1208 transitions. [2023-08-30 15:02:19,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:02:19,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1208 transitions. [2023-08-30 15:02:19,383 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) [2023-08-30 15:02:19,387 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) [2023-08-30 15:02:19,388 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) [2023-08-30 15:02:19,388 INFO L175 Difference]: Start difference. First operand has 54 places, 63 transitions, 262 flow. Second operand 4 states and 1208 transitions. [2023-08-30 15:02:19,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 127 transitions, 664 flow [2023-08-30 15:02:19,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 127 transitions, 652 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:02:19,394 INFO L231 Difference]: Finished difference. Result has 56 places, 66 transitions, 301 flow [2023-08-30 15:02:19,394 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} [2023-08-30 15:02:19,396 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2023-08-30 15:02:19,396 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 66 transitions, 301 flow [2023-08-30 15:02:19,397 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) [2023-08-30 15:02:19,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:02:19,397 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-30 15:02:19,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 15:02:19,602 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 [2023-08-30 15:02:19,603 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:02:19,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:02:19,603 INFO L85 PathProgramCache]: Analyzing trace with hash -690549195, now seen corresponding path program 1 times [2023-08-30 15:02:19,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:02:19,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894376114] [2023-08-30 15:02:19,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:19,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:02:19,617 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:02:19,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079255737] [2023-08-30 15:02:19,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:19,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:02:19,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:02:19,619 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) [2023-08-30 15:02:19,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 15:02:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:02:19,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:02:19,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:02:19,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:02:19,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:02:19,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:02:19,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:02:19,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894376114] [2023-08-30 15:02:19,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:02:19,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079255737] [2023-08-30 15:02:19,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079255737] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:02:19,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 15:02:19,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-30 15:02:19,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914348260] [2023-08-30 15:02:19,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 15:02:19,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 15:02:19,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:02:19,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 15:02:19,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:02:19,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 662 [2023-08-30 15:02:19,776 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) [2023-08-30 15:02:19,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:02:19,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 662 [2023-08-30 15:02:19,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:02:20,989 INFO L130 PetriNetUnfolder]: 9163/14962 cut-off events. [2023-08-30 15:02:20,990 INFO L131 PetriNetUnfolder]: For 356/356 co-relation queries the response was YES. [2023-08-30 15:02:21,013 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. [2023-08-30 15:02:21,118 INFO L137 encePairwiseOnDemand]: 659/662 looper letters, 222 selfloop transitions, 5 changer transitions 0/229 dead transitions. [2023-08-30 15:02:21,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 229 transitions, 1296 flow [2023-08-30 15:02:21,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:02:21,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:02:21,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1891 transitions. [2023-08-30 15:02:21,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47608257804632426 [2023-08-30 15:02:21,123 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1891 transitions. [2023-08-30 15:02:21,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1891 transitions. [2023-08-30 15:02:21,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:02:21,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1891 transitions. [2023-08-30 15:02:21,127 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) [2023-08-30 15:02:21,132 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) [2023-08-30 15:02:21,134 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) [2023-08-30 15:02:21,134 INFO L175 Difference]: Start difference. First operand has 56 places, 66 transitions, 301 flow. Second operand 6 states and 1891 transitions. [2023-08-30 15:02:21,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 229 transitions, 1296 flow [2023-08-30 15:02:21,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 229 transitions, 1288 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-30 15:02:21,138 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 331 flow [2023-08-30 15:02:21,139 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} [2023-08-30 15:02:21,139 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2023-08-30 15:02:21,140 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 331 flow [2023-08-30 15:02:21,152 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) [2023-08-30 15:02:21,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:02:21,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:02:21,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 15:02:21,360 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 [2023-08-30 15:02:21,361 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:02:21,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:02:21,361 INFO L85 PathProgramCache]: Analyzing trace with hash -53912874, now seen corresponding path program 1 times [2023-08-30 15:02:21,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:02:21,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8475107] [2023-08-30 15:02:21,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:21,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:02:21,371 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:02:21,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [465064861] [2023-08-30 15:02:21,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:21,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:02:21,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:02:21,375 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) [2023-08-30 15:02:21,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 15:02:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:02:21,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:02:21,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:02:21,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:02:21,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:02:21,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:02:21,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8475107] [2023-08-30 15:02:21,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:02:21,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465064861] [2023-08-30 15:02:21,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465064861] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:02:21,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:02:21,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 15:02:21,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367841919] [2023-08-30 15:02:21,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:02:21,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:02:21,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:02:21,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:02:21,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:02:21,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 662 [2023-08-30 15:02:21,632 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) [2023-08-30 15:02:21,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:02:21,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 662 [2023-08-30 15:02:21,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:02:23,033 INFO L130 PetriNetUnfolder]: 10910/18934 cut-off events. [2023-08-30 15:02:23,033 INFO L131 PetriNetUnfolder]: For 540/540 co-relation queries the response was YES. [2023-08-30 15:02:23,063 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. [2023-08-30 15:02:23,123 INFO L137 encePairwiseOnDemand]: 653/662 looper letters, 162 selfloop transitions, 17 changer transitions 0/180 dead transitions. [2023-08-30 15:02:23,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 180 transitions, 1047 flow [2023-08-30 15:02:23,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:02:23,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:02:23,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2047 transitions. [2023-08-30 15:02:23,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417350021579629 [2023-08-30 15:02:23,130 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2047 transitions. [2023-08-30 15:02:23,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2047 transitions. [2023-08-30 15:02:23,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:02:23,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2047 transitions. [2023-08-30 15:02:23,134 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) [2023-08-30 15:02:23,139 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) [2023-08-30 15:02:23,140 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) [2023-08-30 15:02:23,141 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 331 flow. Second operand 7 states and 2047 transitions. [2023-08-30 15:02:23,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 180 transitions, 1047 flow [2023-08-30 15:02:23,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 180 transitions, 1023 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 15:02:23,145 INFO L231 Difference]: Finished difference. Result has 74 places, 77 transitions, 443 flow [2023-08-30 15:02:23,146 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} [2023-08-30 15:02:23,147 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 21 predicate places. [2023-08-30 15:02:23,147 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 77 transitions, 443 flow [2023-08-30 15:02:23,148 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) [2023-08-30 15:02:23,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:02:23,148 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-30 15:02:23,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 15:02:23,353 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 [2023-08-30 15:02:23,354 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:02:23,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:02:23,354 INFO L85 PathProgramCache]: Analyzing trace with hash 50329037, now seen corresponding path program 1 times [2023-08-30 15:02:23,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:02:23,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875087567] [2023-08-30 15:02:23,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:23,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:02:23,374 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:02:23,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [828977472] [2023-08-30 15:02:23,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:23,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:02:23,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:02:23,376 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) [2023-08-30 15:02:23,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 15:02:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:02:23,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 15:02:23,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:02:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:02:23,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:02:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:02:23,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:02:23,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875087567] [2023-08-30 15:02:23,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:02:23,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828977472] [2023-08-30 15:02:23,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828977472] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:02:23,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 15:02:23,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-08-30 15:02:23,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818771058] [2023-08-30 15:02:23,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 15:02:23,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 15:02:23,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:02:23,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 15:02:23,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 15:02:23,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 662 [2023-08-30 15:02:23,844 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) [2023-08-30 15:02:23,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:02:23,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 662 [2023-08-30 15:02:23,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:02:26,181 INFO L130 PetriNetUnfolder]: 14627/25157 cut-off events. [2023-08-30 15:02:26,181 INFO L131 PetriNetUnfolder]: For 7435/8437 co-relation queries the response was YES. [2023-08-30 15:02:26,242 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. [2023-08-30 15:02:26,323 INFO L137 encePairwiseOnDemand]: 651/662 looper letters, 180 selfloop transitions, 72 changer transitions 0/256 dead transitions. [2023-08-30 15:02:26,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 256 transitions, 1562 flow [2023-08-30 15:02:26,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 15:02:26,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 15:02:26,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3704 transitions. [2023-08-30 15:02:26,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43039739716476877 [2023-08-30 15:02:26,338 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3704 transitions. [2023-08-30 15:02:26,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3704 transitions. [2023-08-30 15:02:26,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:02:26,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3704 transitions. [2023-08-30 15:02:26,347 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) [2023-08-30 15:02:26,359 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) [2023-08-30 15:02:26,361 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) [2023-08-30 15:02:26,361 INFO L175 Difference]: Start difference. First operand has 74 places, 77 transitions, 443 flow. Second operand 13 states and 3704 transitions. [2023-08-30 15:02:26,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 256 transitions, 1562 flow [2023-08-30 15:02:26,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 256 transitions, 1562 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 15:02:26,399 INFO L231 Difference]: Finished difference. Result has 89 places, 118 transitions, 953 flow [2023-08-30 15:02:26,399 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} [2023-08-30 15:02:26,399 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 36 predicate places. [2023-08-30 15:02:26,400 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 118 transitions, 953 flow [2023-08-30 15:02:26,400 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) [2023-08-30 15:02:26,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:02:26,401 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 15:02:26,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 15:02:26,607 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 [2023-08-30 15:02:26,607 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:02:26,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:02:26,607 INFO L85 PathProgramCache]: Analyzing trace with hash 2068288911, now seen corresponding path program 1 times [2023-08-30 15:02:26,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:02:26,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306586391] [2023-08-30 15:02:26,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:26,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:02:26,622 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:02:26,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1250546670] [2023-08-30 15:02:26,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:26,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:02:26,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:02:26,624 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) [2023-08-30 15:02:26,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 15:02:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:02:26,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:02:26,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:02:26,775 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:02:26,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:02:26,831 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:02:26,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:02:26,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306586391] [2023-08-30 15:02:26,832 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:02:26,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250546670] [2023-08-30 15:02:26,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250546670] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:02:26,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 15:02:26,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-08-30 15:02:26,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335702993] [2023-08-30 15:02:26,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 15:02:26,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 15:02:26,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:02:26,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 15:02:26,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 15:02:26,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-08-30 15:02:26,961 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) [2023-08-30 15:02:26,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:02:26,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-08-30 15:02:26,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:02:31,449 INFO L130 PetriNetUnfolder]: 27095/46355 cut-off events. [2023-08-30 15:02:31,450 INFO L131 PetriNetUnfolder]: For 13685/15341 co-relation queries the response was YES. [2023-08-30 15:02:31,612 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. [2023-08-30 15:02:31,732 INFO L137 encePairwiseOnDemand]: 654/662 looper letters, 435 selfloop transitions, 74 changer transitions 0/513 dead transitions. [2023-08-30 15:02:31,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 513 transitions, 3625 flow [2023-08-30 15:02:31,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:02:31,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:02:31,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3782 transitions. [2023-08-30 15:02:31,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47608257804632426 [2023-08-30 15:02:31,742 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3782 transitions. [2023-08-30 15:02:31,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3782 transitions. [2023-08-30 15:02:31,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:02:31,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3782 transitions. [2023-08-30 15:02:31,749 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) [2023-08-30 15:02:31,758 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) [2023-08-30 15:02:31,760 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) [2023-08-30 15:02:31,760 INFO L175 Difference]: Start difference. First operand has 89 places, 118 transitions, 953 flow. Second operand 12 states and 3782 transitions. [2023-08-30 15:02:31,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 513 transitions, 3625 flow [2023-08-30 15:02:31,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 513 transitions, 3587 flow, removed 19 selfloop flow, removed 0 redundant places. [2023-08-30 15:02:31,875 INFO L231 Difference]: Finished difference. Result has 106 places, 154 transitions, 1487 flow [2023-08-30 15:02:31,875 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} [2023-08-30 15:02:31,876 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 53 predicate places. [2023-08-30 15:02:31,876 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 154 transitions, 1487 flow [2023-08-30 15:02:31,877 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) [2023-08-30 15:02:31,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:02:31,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:02:31,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-30 15:02:32,083 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 [2023-08-30 15:02:32,083 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:02:32,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:02:32,084 INFO L85 PathProgramCache]: Analyzing trace with hash 21882226, now seen corresponding path program 1 times [2023-08-30 15:02:32,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:02:32,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921241034] [2023-08-30 15:02:32,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:32,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:02:32,097 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:02:32,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084533576] [2023-08-30 15:02:32,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:32,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:02:32,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:02:32,099 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) [2023-08-30 15:02:32,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 15:02:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:02:32,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:02:32,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:02:32,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:02:32,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:02:32,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:02:32,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921241034] [2023-08-30 15:02:32,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:02:32,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084533576] [2023-08-30 15:02:32,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084533576] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:02:32,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:02:32,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 15:02:32,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178985459] [2023-08-30 15:02:32,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:02:32,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:02:32,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:02:32,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:02:32,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:02:32,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 662 [2023-08-30 15:02:32,368 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) [2023-08-30 15:02:32,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:02:32,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 662 [2023-08-30 15:02:32,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:02:36,229 INFO L130 PetriNetUnfolder]: 23642/40982 cut-off events. [2023-08-30 15:02:36,230 INFO L131 PetriNetUnfolder]: For 11448/13073 co-relation queries the response was YES. [2023-08-30 15:02:36,454 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. [2023-08-30 15:02:36,567 INFO L137 encePairwiseOnDemand]: 655/662 looper letters, 181 selfloop transitions, 12 changer transitions 7/203 dead transitions. [2023-08-30 15:02:36,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 203 transitions, 2252 flow [2023-08-30 15:02:36,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:02:36,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:02:36,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1456 transitions. [2023-08-30 15:02:36,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398791540785498 [2023-08-30 15:02:36,571 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1456 transitions. [2023-08-30 15:02:36,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1456 transitions. [2023-08-30 15:02:36,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:02:36,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1456 transitions. [2023-08-30 15:02:36,574 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) [2023-08-30 15:02:36,578 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) [2023-08-30 15:02:36,579 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) [2023-08-30 15:02:36,579 INFO L175 Difference]: Start difference. First operand has 106 places, 154 transitions, 1487 flow. Second operand 5 states and 1456 transitions. [2023-08-30 15:02:36,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 203 transitions, 2252 flow [2023-08-30 15:02:36,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 203 transitions, 2002 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-08-30 15:02:36,692 INFO L231 Difference]: Finished difference. Result has 108 places, 156 transitions, 1349 flow [2023-08-30 15:02:36,692 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} [2023-08-30 15:02:36,697 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 55 predicate places. [2023-08-30 15:02:36,697 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 156 transitions, 1349 flow [2023-08-30 15:02:36,698 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) [2023-08-30 15:02:36,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:02:36,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:02:36,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 15:02:36,903 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 [2023-08-30 15:02:36,903 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:02:36,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:02:36,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1821945608, now seen corresponding path program 1 times [2023-08-30 15:02:36,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:02:36,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703379674] [2023-08-30 15:02:36,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:36,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:02:36,915 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:02:36,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1326769378] [2023-08-30 15:02:36,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:36,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:02:36,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:02:36,917 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) [2023-08-30 15:02:36,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 15:02:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:02:37,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 15:02:37,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:02:37,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:02:37,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:02:37,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:02:37,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703379674] [2023-08-30 15:02:37,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:02:37,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326769378] [2023-08-30 15:02:37,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326769378] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:02:37,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:02:37,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:02:37,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798510092] [2023-08-30 15:02:37,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:02:37,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:02:37,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:02:37,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:02:37,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:02:37,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 662 [2023-08-30 15:02:37,051 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) [2023-08-30 15:02:37,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:02:37,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 662 [2023-08-30 15:02:37,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:02:40,872 INFO L130 PetriNetUnfolder]: 22817/40041 cut-off events. [2023-08-30 15:02:40,872 INFO L131 PetriNetUnfolder]: For 11775/11914 co-relation queries the response was YES. [2023-08-30 15:02:41,100 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. [2023-08-30 15:02:41,194 INFO L137 encePairwiseOnDemand]: 660/662 looper letters, 167 selfloop transitions, 3 changer transitions 0/172 dead transitions. [2023-08-30 15:02:41,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 172 transitions, 1724 flow [2023-08-30 15:02:41,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:02:41,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:02:41,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 919 transitions. [2023-08-30 15:02:41,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46273917421953675 [2023-08-30 15:02:41,197 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 919 transitions. [2023-08-30 15:02:41,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 919 transitions. [2023-08-30 15:02:41,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:02:41,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 919 transitions. [2023-08-30 15:02:41,199 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) [2023-08-30 15:02:41,202 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) [2023-08-30 15:02:41,202 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) [2023-08-30 15:02:41,202 INFO L175 Difference]: Start difference. First operand has 108 places, 156 transitions, 1349 flow. Second operand 3 states and 919 transitions. [2023-08-30 15:02:41,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 172 transitions, 1724 flow [2023-08-30 15:02:41,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 172 transitions, 1704 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:02:41,382 INFO L231 Difference]: Finished difference. Result has 107 places, 155 transitions, 1333 flow [2023-08-30 15:02:41,383 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} [2023-08-30 15:02:41,383 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 54 predicate places. [2023-08-30 15:02:41,383 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 155 transitions, 1333 flow [2023-08-30 15:02:41,384 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) [2023-08-30 15:02:41,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:02:41,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:02:41,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 15:02:41,586 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 [2023-08-30 15:02:41,587 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:02:41,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:02:41,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1821945609, now seen corresponding path program 1 times [2023-08-30 15:02:41,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:02:41,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073412143] [2023-08-30 15:02:41,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:41,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:02:41,600 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:02:41,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185738535] [2023-08-30 15:02:41,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:41,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:02:41,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:02:41,601 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) [2023-08-30 15:02:41,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 15:02:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:02:41,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 15:02:41,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:02:41,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:02:41,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:02:41,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:02:41,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073412143] [2023-08-30 15:02:41,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:02:41,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185738535] [2023-08-30 15:02:41,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185738535] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:02:41,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:02:41,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:02:41,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287706246] [2023-08-30 15:02:41,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:02:41,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:02:41,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:02:41,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:02:41,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:02:41,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 662 [2023-08-30 15:02:41,730 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) [2023-08-30 15:02:41,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:02:41,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 662 [2023-08-30 15:02:41,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:02:47,157 INFO L130 PetriNetUnfolder]: 32189/55958 cut-off events. [2023-08-30 15:02:47,157 INFO L131 PetriNetUnfolder]: For 28333/28560 co-relation queries the response was YES. [2023-08-30 15:02:47,465 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. [2023-08-30 15:02:47,607 INFO L137 encePairwiseOnDemand]: 659/662 looper letters, 174 selfloop transitions, 4 changer transitions 0/180 dead transitions. [2023-08-30 15:02:47,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 180 transitions, 1752 flow [2023-08-30 15:02:47,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:02:47,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:02:47,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 927 transitions. [2023-08-30 15:02:47,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46676737160120846 [2023-08-30 15:02:47,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 927 transitions. [2023-08-30 15:02:47,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 927 transitions. [2023-08-30 15:02:47,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:02:47,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 927 transitions. [2023-08-30 15:02:47,612 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) [2023-08-30 15:02:47,614 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) [2023-08-30 15:02:47,615 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) [2023-08-30 15:02:47,615 INFO L175 Difference]: Start difference. First operand has 107 places, 155 transitions, 1333 flow. Second operand 3 states and 927 transitions. [2023-08-30 15:02:47,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 180 transitions, 1752 flow [2023-08-30 15:02:47,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 180 transitions, 1749 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:02:47,905 INFO L231 Difference]: Finished difference. Result has 109 places, 156 transitions, 1348 flow [2023-08-30 15:02:47,905 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} [2023-08-30 15:02:47,905 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 56 predicate places. [2023-08-30 15:02:47,906 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 156 transitions, 1348 flow [2023-08-30 15:02:47,906 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) [2023-08-30 15:02:47,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:02:47,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:02:47,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-30 15:02:48,106 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 [2023-08-30 15:02:48,107 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:02:48,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:02:48,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1787278130, now seen corresponding path program 1 times [2023-08-30 15:02:48,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:02:48,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251960669] [2023-08-30 15:02:48,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:48,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:02:48,116 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:02:48,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [791785998] [2023-08-30 15:02:48,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:48,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:02:48,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:02:48,118 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) [2023-08-30 15:02:48,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 15:02:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:02:48,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:02:48,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:02:48,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:02:48,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:02:48,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:02:48,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251960669] [2023-08-30 15:02:48,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:02:48,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791785998] [2023-08-30 15:02:48,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791785998] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:02:48,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:02:48,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 15:02:48,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495933860] [2023-08-30 15:02:48,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:02:48,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:02:48,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:02:48,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:02:48,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:02:48,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 662 [2023-08-30 15:02:48,581 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) [2023-08-30 15:02:48,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:02:48,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 662 [2023-08-30 15:02:48,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:02:54,567 INFO L130 PetriNetUnfolder]: 31914/57626 cut-off events. [2023-08-30 15:02:54,568 INFO L131 PetriNetUnfolder]: For 22457/24482 co-relation queries the response was YES. [2023-08-30 15:02:54,964 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. [2023-08-30 15:02:55,119 INFO L137 encePairwiseOnDemand]: 650/662 looper letters, 196 selfloop transitions, 77 changer transitions 4/282 dead transitions. [2023-08-30 15:02:55,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 282 transitions, 2779 flow [2023-08-30 15:02:55,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:02:55,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:02:55,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2027 transitions. [2023-08-30 15:02:55,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43741907639188604 [2023-08-30 15:02:55,122 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2027 transitions. [2023-08-30 15:02:55,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2027 transitions. [2023-08-30 15:02:55,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:02:55,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2027 transitions. [2023-08-30 15:02:55,127 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) [2023-08-30 15:02:55,132 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) [2023-08-30 15:02:55,132 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) [2023-08-30 15:02:55,133 INFO L175 Difference]: Start difference. First operand has 109 places, 156 transitions, 1348 flow. Second operand 7 states and 2027 transitions. [2023-08-30 15:02:55,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 282 transitions, 2779 flow [2023-08-30 15:02:55,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 282 transitions, 2771 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:02:55,470 INFO L231 Difference]: Finished difference. Result has 120 places, 198 transitions, 2173 flow [2023-08-30 15:02:55,471 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} [2023-08-30 15:02:55,471 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 67 predicate places. [2023-08-30 15:02:55,471 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 198 transitions, 2173 flow [2023-08-30 15:02:55,471 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) [2023-08-30 15:02:55,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:02:55,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:02:55,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 15:02:55,677 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 [2023-08-30 15:02:55,677 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:02:55,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:02:55,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1787278116, now seen corresponding path program 1 times [2023-08-30 15:02:55,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:02:55,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966078140] [2023-08-30 15:02:55,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:55,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:02:55,834 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:02:55,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1398003167] [2023-08-30 15:02:55,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:02:55,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:02:55,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:02:55,835 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) [2023-08-30 15:02:55,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 15:02:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:02:55,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 15:02:55,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:02:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:02:55,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:02:55,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:02:55,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966078140] [2023-08-30 15:02:55,957 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:02:55,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398003167] [2023-08-30 15:02:55,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398003167] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:02:55,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:02:55,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:02:55,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365919646] [2023-08-30 15:02:55,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:02:55,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:02:55,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:02:55,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:02:55,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:02:56,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 662 [2023-08-30 15:02:56,001 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) [2023-08-30 15:02:56,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:02:56,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 662 [2023-08-30 15:02:56,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:03:01,974 INFO L130 PetriNetUnfolder]: 30410/55036 cut-off events. [2023-08-30 15:03:01,974 INFO L131 PetriNetUnfolder]: For 36343/38109 co-relation queries the response was YES. [2023-08-30 15:03:02,351 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. [2023-08-30 15:03:02,506 INFO L137 encePairwiseOnDemand]: 660/662 looper letters, 200 selfloop transitions, 2 changer transitions 0/205 dead transitions. [2023-08-30 15:03:02,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 205 transitions, 2602 flow [2023-08-30 15:03:02,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:03:02,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:03:02,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 908 transitions. [2023-08-30 15:03:02,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45720040281973817 [2023-08-30 15:03:02,509 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 908 transitions. [2023-08-30 15:03:02,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 908 transitions. [2023-08-30 15:03:02,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:03:02,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 908 transitions. [2023-08-30 15:03:02,511 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) [2023-08-30 15:03:02,513 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) [2023-08-30 15:03:02,514 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) [2023-08-30 15:03:02,514 INFO L175 Difference]: Start difference. First operand has 120 places, 198 transitions, 2173 flow. Second operand 3 states and 908 transitions. [2023-08-30 15:03:02,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 205 transitions, 2602 flow [2023-08-30 15:03:03,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 205 transitions, 2590 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-30 15:03:03,050 INFO L231 Difference]: Finished difference. Result has 121 places, 197 transitions, 2163 flow [2023-08-30 15:03:03,050 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} [2023-08-30 15:03:03,050 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 68 predicate places. [2023-08-30 15:03:03,050 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 197 transitions, 2163 flow [2023-08-30 15:03:03,051 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) [2023-08-30 15:03:03,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:03:03,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:03:03,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-30 15:03:03,256 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 [2023-08-30 15:03:03,256 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:03:03,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:03:03,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1787278115, now seen corresponding path program 1 times [2023-08-30 15:03:03,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:03:03,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020411020] [2023-08-30 15:03:03,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:03:03,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:03:03,266 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:03:03,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451177464] [2023-08-30 15:03:03,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:03:03,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:03:03,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:03:03,267 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) [2023-08-30 15:03:03,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 15:03:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:03:03,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 15:03:03,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:03:03,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:03:03,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:03:03,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:03:03,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020411020] [2023-08-30 15:03:03,389 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:03:03,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451177464] [2023-08-30 15:03:03,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451177464] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:03:03,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:03:03,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:03:03,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344663134] [2023-08-30 15:03:03,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:03:03,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:03:03,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:03:03,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:03:03,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:03:03,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 662 [2023-08-30 15:03:03,406 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) [2023-08-30 15:03:03,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:03:03,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 662 [2023-08-30 15:03:03,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:03:13,057 INFO L130 PetriNetUnfolder]: 47693/85270 cut-off events. [2023-08-30 15:03:13,058 INFO L131 PetriNetUnfolder]: For 57112/59914 co-relation queries the response was YES. [2023-08-30 15:03:13,647 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. [2023-08-30 15:03:13,871 INFO L137 encePairwiseOnDemand]: 659/662 looper letters, 214 selfloop transitions, 3 changer transitions 0/220 dead transitions. [2023-08-30 15:03:13,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 220 transitions, 2701 flow [2023-08-30 15:03:13,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:03:13,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:03:13,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 923 transitions. [2023-08-30 15:03:13,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4647532729103726 [2023-08-30 15:03:13,873 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 923 transitions. [2023-08-30 15:03:13,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 923 transitions. [2023-08-30 15:03:13,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:03:13,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 923 transitions. [2023-08-30 15:03:13,875 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) [2023-08-30 15:03:13,877 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) [2023-08-30 15:03:13,877 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) [2023-08-30 15:03:13,877 INFO L175 Difference]: Start difference. First operand has 121 places, 197 transitions, 2163 flow. Second operand 3 states and 923 transitions. [2023-08-30 15:03:13,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 220 transitions, 2701 flow [2023-08-30 15:03:14,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 220 transitions, 2699 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:03:14,798 INFO L231 Difference]: Finished difference. Result has 123 places, 198 transitions, 2176 flow [2023-08-30 15:03:14,799 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} [2023-08-30 15:03:14,799 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 70 predicate places. [2023-08-30 15:03:14,799 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 198 transitions, 2176 flow [2023-08-30 15:03:14,800 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) [2023-08-30 15:03:14,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:03:14,800 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:03:14,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-30 15:03:15,005 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 [2023-08-30 15:03:15,005 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:03:15,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:03:15,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1456899908, now seen corresponding path program 1 times [2023-08-30 15:03:15,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:03:15,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453135097] [2023-08-30 15:03:15,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:03:15,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:03:15,027 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:03:15,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [493927580] [2023-08-30 15:03:15,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:03:15,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:03:15,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:03:15,029 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) [2023-08-30 15:03:15,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-30 15:03:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:03:15,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:03:15,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:03:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:03:15,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:03:15,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:03:15,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:03:15,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453135097] [2023-08-30 15:03:15,392 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:03:15,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493927580] [2023-08-30 15:03:15,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493927580] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:03:15,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 15:03:15,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-30 15:03:15,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670528429] [2023-08-30 15:03:15,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 15:03:15,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 15:03:15,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:03:15,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 15:03:15,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-08-30 15:03:15,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 662 [2023-08-30 15:03:15,609 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) [2023-08-30 15:03:15,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:03:15,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 662 [2023-08-30 15:03:15,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:03:31,342 INFO L130 PetriNetUnfolder]: 76617/136729 cut-off events. [2023-08-30 15:03:31,343 INFO L131 PetriNetUnfolder]: For 115805/116015 co-relation queries the response was YES. [2023-08-30 15:03:32,359 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. [2023-08-30 15:03:32,743 INFO L137 encePairwiseOnDemand]: 650/662 looper letters, 322 selfloop transitions, 32 changer transitions 48/404 dead transitions. [2023-08-30 15:03:32,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 404 transitions, 4181 flow [2023-08-30 15:03:32,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 15:03:32,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 15:03:32,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4709 transitions. [2023-08-30 15:03:32,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41842900302114805 [2023-08-30 15:03:32,750 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4709 transitions. [2023-08-30 15:03:32,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4709 transitions. [2023-08-30 15:03:32,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:03:32,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4709 transitions. [2023-08-30 15:03:32,758 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) [2023-08-30 15:03:32,767 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) [2023-08-30 15:03:32,768 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) [2023-08-30 15:03:32,769 INFO L175 Difference]: Start difference. First operand has 123 places, 198 transitions, 2176 flow. Second operand 17 states and 4709 transitions. [2023-08-30 15:03:32,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 404 transitions, 4181 flow [2023-08-30 15:03:35,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 404 transitions, 4173 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:03:35,412 INFO L231 Difference]: Finished difference. Result has 145 places, 203 transitions, 2326 flow [2023-08-30 15:03:35,412 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} [2023-08-30 15:03:35,413 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 92 predicate places. [2023-08-30 15:03:35,413 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 203 transitions, 2326 flow [2023-08-30 15:03:35,413 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) [2023-08-30 15:03:35,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:03:35,413 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1] [2023-08-30 15:03:35,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-30 15:03:35,613 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 [2023-08-30 15:03:35,614 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:03:35,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:03:35,614 INFO L85 PathProgramCache]: Analyzing trace with hash 497683039, now seen corresponding path program 2 times [2023-08-30 15:03:35,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:03:35,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324432827] [2023-08-30 15:03:35,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:03:35,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:03:35,629 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:03:35,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485823964] [2023-08-30 15:03:35,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:03:35,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:03:35,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:03:35,630 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) [2023-08-30 15:03:35,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-30 15:03:35,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:03:35,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:03:35,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:03:35,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:03:35,779 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 15:03:35,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:03:35,803 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 15:03:35,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:03:35,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324432827] [2023-08-30 15:03:35,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:03:35,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485823964] [2023-08-30 15:03:35,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485823964] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:03:35,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 15:03:35,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2023-08-30 15:03:35,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455358937] [2023-08-30 15:03:35,804 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 15:03:35,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:03:35,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:03:35,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:03:35,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:03:35,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-08-30 15:03:35,847 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) [2023-08-30 15:03:35,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:03:35,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-08-30 15:03:35,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:03:50,886 INFO L130 PetriNetUnfolder]: 64284/116792 cut-off events. [2023-08-30 15:03:50,886 INFO L131 PetriNetUnfolder]: For 170078/172826 co-relation queries the response was YES. [2023-08-30 15:03:51,924 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. [2023-08-30 15:03:52,495 INFO L137 encePairwiseOnDemand]: 657/662 looper letters, 118 selfloop transitions, 90 changer transitions 4/218 dead transitions. [2023-08-30 15:03:52,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 218 transitions, 2834 flow [2023-08-30 15:03:52,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:03:52,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:03:52,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1172 transitions. [2023-08-30 15:03:52,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425981873111782 [2023-08-30 15:03:52,497 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1172 transitions. [2023-08-30 15:03:52,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1172 transitions. [2023-08-30 15:03:52,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:03:52,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1172 transitions. [2023-08-30 15:03:52,499 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) [2023-08-30 15:03:52,501 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) [2023-08-30 15:03:52,502 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) [2023-08-30 15:03:52,502 INFO L175 Difference]: Start difference. First operand has 145 places, 203 transitions, 2326 flow. Second operand 4 states and 1172 transitions. [2023-08-30 15:03:52,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 218 transitions, 2834 flow [2023-08-30 15:03:54,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 218 transitions, 2741 flow, removed 12 selfloop flow, removed 7 redundant places. [2023-08-30 15:03:54,123 INFO L231 Difference]: Finished difference. Result has 136 places, 205 transitions, 2558 flow [2023-08-30 15:03:54,124 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} [2023-08-30 15:03:54,124 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 83 predicate places. [2023-08-30 15:03:54,124 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 205 transitions, 2558 flow [2023-08-30 15:03:54,124 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) [2023-08-30 15:03:54,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:03:54,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:03:54,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-30 15:03:54,328 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 [2023-08-30 15:03:54,329 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:03:54,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:03:54,329 INFO L85 PathProgramCache]: Analyzing trace with hash -103419605, now seen corresponding path program 1 times [2023-08-30 15:03:54,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:03:54,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964216233] [2023-08-30 15:03:54,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:03:54,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:03:54,340 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:03:54,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84055191] [2023-08-30 15:03:54,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:03:54,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:03:54,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:03:54,342 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) [2023-08-30 15:03:54,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-30 15:03:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:03:54,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 15:03:54,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:03:54,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:03:54,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:03:54,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:03:54,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964216233] [2023-08-30 15:03:54,479 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:03:54,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84055191] [2023-08-30 15:03:54,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84055191] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:03:54,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:03:54,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:03:54,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240384520] [2023-08-30 15:03:54,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:03:54,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:03:54,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:03:54,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:03:54,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:03:54,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 662 [2023-08-30 15:03:54,494 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) [2023-08-30 15:03:54,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:03:54,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 662 [2023-08-30 15:03:54,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:04:18,659 INFO L130 PetriNetUnfolder]: 99621/173296 cut-off events. [2023-08-30 15:04:18,659 INFO L131 PetriNetUnfolder]: For 186569/190435 co-relation queries the response was YES. [2023-08-30 15:04:19,977 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. [2023-08-30 15:04:20,498 INFO L137 encePairwiseOnDemand]: 656/662 looper letters, 219 selfloop transitions, 6 changer transitions 0/231 dead transitions. [2023-08-30 15:04:20,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 231 transitions, 3138 flow [2023-08-30 15:04:20,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:04:20,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:04:20,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 921 transitions. [2023-08-30 15:04:20,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4637462235649547 [2023-08-30 15:04:20,499 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 921 transitions. [2023-08-30 15:04:20,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 921 transitions. [2023-08-30 15:04:20,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:04:20,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 921 transitions. [2023-08-30 15:04:20,501 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) [2023-08-30 15:04:20,503 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) [2023-08-30 15:04:20,503 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) [2023-08-30 15:04:20,503 INFO L175 Difference]: Start difference. First operand has 136 places, 205 transitions, 2558 flow. Second operand 3 states and 921 transitions. [2023-08-30 15:04:20,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 231 transitions, 3138 flow [2023-08-30 15:04:22,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 231 transitions, 3048 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:04:22,706 INFO L231 Difference]: Finished difference. Result has 138 places, 209 transitions, 2522 flow [2023-08-30 15:04:22,706 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} [2023-08-30 15:04:22,706 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 85 predicate places. [2023-08-30 15:04:22,707 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 209 transitions, 2522 flow [2023-08-30 15:04:22,707 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) [2023-08-30 15:04:22,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:04:22,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:04:22,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-30 15:04:22,910 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 [2023-08-30 15:04:22,910 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:04:22,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:04:22,910 INFO L85 PathProgramCache]: Analyzing trace with hash -103419672, now seen corresponding path program 1 times [2023-08-30 15:04:22,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:04:22,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570309410] [2023-08-30 15:04:22,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:04:22,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:04:22,920 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:04:22,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394318734] [2023-08-30 15:04:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:04:22,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:04:22,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:04:22,922 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) [2023-08-30 15:04:22,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-30 15:04:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:04:23,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 15:04:23,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:04:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:04:23,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:04:23,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:04:23,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570309410] [2023-08-30 15:04:23,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:04:23,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394318734] [2023-08-30 15:04:23,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394318734] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:04:23,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:04:23,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:04:23,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409986914] [2023-08-30 15:04:23,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:04:23,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:04:23,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:04:23,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:04:23,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:04:23,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 662 [2023-08-30 15:04:23,071 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) [2023-08-30 15:04:23,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:04:23,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 662 [2023-08-30 15:04:23,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:04:42,244 INFO L130 PetriNetUnfolder]: 85345/152700 cut-off events. [2023-08-30 15:04:42,244 INFO L131 PetriNetUnfolder]: For 227389/230911 co-relation queries the response was YES. [2023-08-30 15:04:43,455 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. [2023-08-30 15:04:43,895 INFO L137 encePairwiseOnDemand]: 659/662 looper letters, 212 selfloop transitions, 3 changer transitions 0/221 dead transitions. [2023-08-30 15:04:43,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 221 transitions, 3016 flow [2023-08-30 15:04:43,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:04:43,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:04:43,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 910 transitions. [2023-08-30 15:04:43,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45820745216515607 [2023-08-30 15:04:43,897 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 910 transitions. [2023-08-30 15:04:43,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 910 transitions. [2023-08-30 15:04:43,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:04:43,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 910 transitions. [2023-08-30 15:04:43,898 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) [2023-08-30 15:04:43,900 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) [2023-08-30 15:04:43,900 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) [2023-08-30 15:04:43,900 INFO L175 Difference]: Start difference. First operand has 138 places, 209 transitions, 2522 flow. Second operand 3 states and 910 transitions. [2023-08-30 15:04:43,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 221 transitions, 3016 flow [2023-08-30 15:04:45,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 221 transitions, 3006 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:04:45,865 INFO L231 Difference]: Finished difference. Result has 137 places, 206 transitions, 2507 flow [2023-08-30 15:04:45,865 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} [2023-08-30 15:04:45,866 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 84 predicate places. [2023-08-30 15:04:45,866 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 206 transitions, 2507 flow [2023-08-30 15:04:45,866 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) [2023-08-30 15:04:45,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:04:45,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:04:45,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-08-30 15:04:46,068 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 [2023-08-30 15:04:46,069 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:04:46,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:04:46,069 INFO L85 PathProgramCache]: Analyzing trace with hash -103419710, now seen corresponding path program 1 times [2023-08-30 15:04:46,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:04:46,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008889594] [2023-08-30 15:04:46,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:04:46,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:04:46,080 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:04:46,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1146370483] [2023-08-30 15:04:46,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:04:46,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:04:46,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:04:46,082 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) [2023-08-30 15:04:46,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-30 15:04:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:04:46,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 15:04:46,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:04:46,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:04:46,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:04:46,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:04:46,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008889594] [2023-08-30 15:04:46,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:04:46,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146370483] [2023-08-30 15:04:46,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146370483] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:04:46,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:04:46,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:04:46,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763386614] [2023-08-30 15:04:46,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:04:46,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:04:46,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:04:46,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:04:46,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:04:46,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 662 [2023-08-30 15:04:46,276 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) [2023-08-30 15:04:46,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:04:46,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 662 [2023-08-30 15:04:46,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:05:04,783 INFO L130 PetriNetUnfolder]: 81391/144930 cut-off events. [2023-08-30 15:05:04,784 INFO L131 PetriNetUnfolder]: For 215047/218261 co-relation queries the response was YES. [2023-08-30 15:05:06,238 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. [2023-08-30 15:05:06,679 INFO L137 encePairwiseOnDemand]: 658/662 looper letters, 220 selfloop transitions, 3 changer transitions 0/227 dead transitions. [2023-08-30 15:05:06,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 227 transitions, 3061 flow [2023-08-30 15:05:06,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:05:06,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:05:06,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 911 transitions. [2023-08-30 15:05:06,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45871097683786505 [2023-08-30 15:05:06,680 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 911 transitions. [2023-08-30 15:05:06,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 911 transitions. [2023-08-30 15:05:06,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:05:06,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 911 transitions. [2023-08-30 15:05:06,681 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) [2023-08-30 15:05:06,682 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) [2023-08-30 15:05:06,683 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) [2023-08-30 15:05:06,683 INFO L175 Difference]: Start difference. First operand has 137 places, 206 transitions, 2507 flow. Second operand 3 states and 911 transitions. [2023-08-30 15:05:06,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 227 transitions, 3061 flow [2023-08-30 15:05:08,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 227 transitions, 3061 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 15:05:08,914 INFO L231 Difference]: Finished difference. Result has 140 places, 206 transitions, 2520 flow [2023-08-30 15:05:08,914 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} [2023-08-30 15:05:08,914 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 87 predicate places. [2023-08-30 15:05:08,914 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 206 transitions, 2520 flow [2023-08-30 15:05:08,915 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) [2023-08-30 15:05:08,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:05:08,915 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:05:08,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-30 15:05:09,115 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 [2023-08-30 15:05:09,116 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:05:09,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:05:09,116 INFO L85 PathProgramCache]: Analyzing trace with hash -412589414, now seen corresponding path program 1 times [2023-08-30 15:05:09,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:05:09,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061096071] [2023-08-30 15:05:09,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:05:09,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:05:09,126 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:05:09,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1369006786] [2023-08-30 15:05:09,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:05:09,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:05:09,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:05:09,128 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) [2023-08-30 15:05:09,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-30 15:05:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:05:09,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:05:09,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:05:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:05:09,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:05:09,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:05:09,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:05:09,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061096071] [2023-08-30 15:05:09,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:05:09,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369006786] [2023-08-30 15:05:09,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369006786] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:05:09,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 15:05:09,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-08-30 15:05:09,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118640965] [2023-08-30 15:05:09,332 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 15:05:09,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 15:05:09,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:05:09,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 15:05:09,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-30 15:05:09,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 662 [2023-08-30 15:05:09,511 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) [2023-08-30 15:05:09,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:05:09,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 662 [2023-08-30 15:05:09,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:05:26,979 INFO L130 PetriNetUnfolder]: 72999/130830 cut-off events. [2023-08-30 15:05:26,979 INFO L131 PetriNetUnfolder]: For 244867/247869 co-relation queries the response was YES. [2023-08-30 15:05:28,052 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. [2023-08-30 15:05:28,441 INFO L137 encePairwiseOnDemand]: 653/662 looper letters, 314 selfloop transitions, 26 changer transitions 24/368 dead transitions. [2023-08-30 15:05:28,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 368 transitions, 4494 flow [2023-08-30 15:05:28,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:05:28,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:05:28,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3416 transitions. [2023-08-30 15:05:28,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4300100704934542 [2023-08-30 15:05:28,445 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3416 transitions. [2023-08-30 15:05:28,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3416 transitions. [2023-08-30 15:05:28,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:05:28,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3416 transitions. [2023-08-30 15:05:28,449 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) [2023-08-30 15:05:28,454 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) [2023-08-30 15:05:28,455 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) [2023-08-30 15:05:28,455 INFO L175 Difference]: Start difference. First operand has 140 places, 206 transitions, 2520 flow. Second operand 12 states and 3416 transitions. [2023-08-30 15:05:28,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 368 transitions, 4494 flow [2023-08-30 15:05:31,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 368 transitions, 4484 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:05:31,289 INFO L231 Difference]: Finished difference. Result has 154 places, 212 transitions, 2630 flow [2023-08-30 15:05:31,289 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} [2023-08-30 15:05:31,289 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 101 predicate places. [2023-08-30 15:05:31,290 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 212 transitions, 2630 flow [2023-08-30 15:05:31,290 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) [2023-08-30 15:05:31,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:05:31,290 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:05:31,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-30 15:05:31,490 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 [2023-08-30 15:05:31,491 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:05:31,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:05:31,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1175472394, now seen corresponding path program 2 times [2023-08-30 15:05:31,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:05:31,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558638578] [2023-08-30 15:05:31,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:05:31,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:05:31,503 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:05:31,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [347220948] [2023-08-30 15:05:31,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:05:31,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:05:31,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:05:31,506 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) [2023-08-30 15:05:31,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-30 15:05:31,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:05:31,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:05:31,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 15:05:31,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:05:32,085 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 15:05:32,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:05:32,284 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 15:05:32,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:05:32,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558638578] [2023-08-30 15:05:32,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:05:32,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347220948] [2023-08-30 15:05:32,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347220948] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:05:32,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 15:05:32,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-30 15:05:32,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262066083] [2023-08-30 15:05:32,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 15:05:32,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 15:05:32,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:05:32,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 15:05:32,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-08-30 15:05:33,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 662 [2023-08-30 15:05:33,767 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) [2023-08-30 15:05:33,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:05:33,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 662 [2023-08-30 15:05:33,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:05:34,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-08-30 15:05:56,157 INFO L130 PetriNetUnfolder]: 77989/138405 cut-off events. [2023-08-30 15:05:56,157 INFO L131 PetriNetUnfolder]: For 341093/341251 co-relation queries the response was YES. [2023-08-30 15:05:57,375 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. [2023-08-30 15:05:57,773 INFO L137 encePairwiseOnDemand]: 654/662 looper letters, 226 selfloop transitions, 20 changer transitions 29/277 dead transitions. [2023-08-30 15:05:57,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 277 transitions, 3613 flow [2023-08-30 15:05:57,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:05:57,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:05:57,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2275 transitions. [2023-08-30 15:05:57,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42956948640483383 [2023-08-30 15:05:57,775 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2275 transitions. [2023-08-30 15:05:57,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2275 transitions. [2023-08-30 15:05:57,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:05:57,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2275 transitions. [2023-08-30 15:05:57,778 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) [2023-08-30 15:05:57,780 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) [2023-08-30 15:05:57,781 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) [2023-08-30 15:05:57,781 INFO L175 Difference]: Start difference. First operand has 154 places, 212 transitions, 2630 flow. Second operand 8 states and 2275 transitions. [2023-08-30 15:05:57,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 277 transitions, 3613 flow [2023-08-30 15:06:00,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 277 transitions, 3582 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 15:06:00,662 INFO L231 Difference]: Finished difference. Result has 159 places, 206 transitions, 2627 flow [2023-08-30 15:06:00,662 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} [2023-08-30 15:06:00,662 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 106 predicate places. [2023-08-30 15:06:00,662 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 206 transitions, 2627 flow [2023-08-30 15:06:00,663 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) [2023-08-30 15:06:00,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:06:00,663 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1] [2023-08-30 15:06:00,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-30 15:06:00,863 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 [2023-08-30 15:06:00,864 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:06:00,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:06:00,864 INFO L85 PathProgramCache]: Analyzing trace with hash 233761103, now seen corresponding path program 2 times [2023-08-30 15:06:00,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:06:00,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831388730] [2023-08-30 15:06:00,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:06:00,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:06:00,890 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:06:00,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320729549] [2023-08-30 15:06:00,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:06:00,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:06:00,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:06:00,892 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) [2023-08-30 15:06:00,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-30 15:06:01,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:06:01,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:06:01,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:06:01,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:06:01,092 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 15:06:01,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:06:01,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:06:01,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831388730] [2023-08-30 15:06:01,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 15:06:01,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320729549] [2023-08-30 15:06:01,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320729549] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:06:01,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:06:01,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:06:01,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345455573] [2023-08-30 15:06:01,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:06:01,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:06:01,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:06:01,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:06:01,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:06:01,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 662 [2023-08-30 15:06:01,199 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) [2023-08-30 15:06:01,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:06:01,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 662 [2023-08-30 15:06:01,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:06:16,894 INFO L130 PetriNetUnfolder]: 62132/112211 cut-off events. [2023-08-30 15:06:16,895 INFO L131 PetriNetUnfolder]: For 347179/357345 co-relation queries the response was YES. [2023-08-30 15:06:17,964 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. [2023-08-30 15:06:18,325 INFO L137 encePairwiseOnDemand]: 658/662 looper letters, 172 selfloop transitions, 26 changer transitions 0/204 dead transitions. [2023-08-30 15:06:18,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 204 transitions, 2968 flow [2023-08-30 15:06:18,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:06:18,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:06:18,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1159 transitions. [2023-08-30 15:06:18,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43768882175226587 [2023-08-30 15:06:18,326 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1159 transitions. [2023-08-30 15:06:18,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1159 transitions. [2023-08-30 15:06:18,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:06:18,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1159 transitions. [2023-08-30 15:06:18,327 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) [2023-08-30 15:06:18,329 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) [2023-08-30 15:06:18,329 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) [2023-08-30 15:06:18,329 INFO L175 Difference]: Start difference. First operand has 159 places, 206 transitions, 2627 flow. Second operand 4 states and 1159 transitions. [2023-08-30 15:06:18,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 204 transitions, 2968 flow [2023-08-30 15:06:24,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 204 transitions, 2896 flow, removed 17 selfloop flow, removed 10 redundant places. [2023-08-30 15:06:25,000 INFO L231 Difference]: Finished difference. Result has 142 places, 204 transitions, 2552 flow [2023-08-30 15:06:25,001 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} [2023-08-30 15:06:25,001 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 89 predicate places. [2023-08-30 15:06:25,001 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 204 transitions, 2552 flow [2023-08-30 15:06:25,001 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) [2023-08-30 15:06:25,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:06:25,001 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1] [2023-08-30 15:06:25,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-30 15:06:25,202 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 [2023-08-30 15:06:25,202 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 15:06:25,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:06:25,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1317517276, now seen corresponding path program 2 times [2023-08-30 15:06:25,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:06:25,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963875682] [2023-08-30 15:06:25,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:06:25,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:06:25,215 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 15:06:25,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1293102119] [2023-08-30 15:06:25,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:06:25,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:06:25,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:06:25,217 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) [2023-08-30 15:06:25,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-30 15:06:25,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:06:25,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:06:25,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 15:06:25,391 INFO L286 TraceCheckSpWp]: Computing forward predicates...