./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-word-symm.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/chl-word-symm.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 4ca4c99e545bc332635ee8b9969d24118d6fd539f8535aa6ae4c72d296ec330e --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 14:59:24,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:59:24,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:59:24,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:59:24,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:59:24,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:59:24,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:59:24,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:59:24,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:59:24,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:59:24,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:59:24,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:59:24,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:59:24,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:59:24,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:59:24,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:59:24,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:59:24,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:59:24,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:59:24,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:59:24,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:59:24,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:59:24,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:59:24,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:59:24,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:59:24,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:59:24,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:59:24,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:59:24,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:59:24,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:59:24,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:59:24,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:59:24,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:59:24,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:59:24,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:59:24,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:59:24,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:59:24,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:59:25,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:59:25,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:59:25,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:59:25,002 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:59:25,031 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:59:25,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:59:25,032 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:59:25,032 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:59:25,033 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:59:25,033 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:59:25,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:59:25,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:59:25,034 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:59:25,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:59:25,035 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:59:25,035 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:59:25,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:59:25,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:59:25,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:59:25,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:59:25,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:59:25,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:59:25,036 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:59:25,037 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:59:25,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:59:25,037 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:59:25,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:59:25,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:59:25,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:59:25,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:59:25,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:59:25,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:59:25,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:59:25,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:59:25,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:59:25,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:59:25,039 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:59:25,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:59:25,039 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:59:25,039 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:59:25,039 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:59:25,039 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ca4c99e545bc332635ee8b9969d24118d6fd539f8535aa6ae4c72d296ec330e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:59:25,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:59:25,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:59:25,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:59:25,322 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:59:25,323 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:59:25,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2023-08-30 14:59:26,289 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:59:26,419 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:59:26,420 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2023-08-30 14:59:26,429 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/205fc7607/14b27d58b3a749b780f69bf1bc873b38/FLAG4d417c51e [2023-08-30 14:59:26,443 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/205fc7607/14b27d58b3a749b780f69bf1bc873b38 [2023-08-30 14:59:26,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:59:26,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:59:26,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:59:26,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:59:26,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:59:26,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:59:26" (1/1) ... [2023-08-30 14:59:26,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72fa694b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:26, skipping insertion in model container [2023-08-30 14:59:26,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:59:26" (1/1) ... [2023-08-30 14:59:26,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:59:26,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:59:26,592 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/chl-word-symm.wvr.c[2848,2861] [2023-08-30 14:59:26,596 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:59:26,601 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:59:26,624 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/chl-word-symm.wvr.c[2848,2861] [2023-08-30 14:59:26,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:59:26,635 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:59:26,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:26 WrapperNode [2023-08-30 14:59:26,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:59:26,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:59:26,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:59:26,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:59:26,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:26" (1/1) ... [2023-08-30 14:59:26,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:26" (1/1) ... [2023-08-30 14:59:26,662 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 138 [2023-08-30 14:59:26,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:59:26,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:59:26,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:59:26,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:59:26,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:26" (1/1) ... [2023-08-30 14:59:26,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:26" (1/1) ... [2023-08-30 14:59:26,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:26" (1/1) ... [2023-08-30 14:59:26,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:26" (1/1) ... [2023-08-30 14:59:26,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:26" (1/1) ... [2023-08-30 14:59:26,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:26" (1/1) ... [2023-08-30 14:59:26,681 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:26" (1/1) ... [2023-08-30 14:59:26,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:26" (1/1) ... [2023-08-30 14:59:26,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:59:26,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:59:26,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:59:26,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:59:26,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:26" (1/1) ... [2023-08-30 14:59:26,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:59:26,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:59:26,747 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 14:59:26,771 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 14:59:26,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:59:26,781 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 14:59:26,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 14:59:26,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 14:59:26,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 14:59:26,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:59:26,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:59:26,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:59:26,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 14:59:26,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:59:26,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:59:26,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:59:26,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:59:26,785 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 14:59:26,887 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:59:26,888 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:59:27,123 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:59:27,129 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:59:27,131 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 14:59:27,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:59:27 BoogieIcfgContainer [2023-08-30 14:59:27,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:59:27,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:59:27,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:59:27,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:59:27,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:59:26" (1/3) ... [2023-08-30 14:59:27,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325ea2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:59:27, skipping insertion in model container [2023-08-30 14:59:27,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:26" (2/3) ... [2023-08-30 14:59:27,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325ea2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:59:27, skipping insertion in model container [2023-08-30 14:59:27,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:59:27" (3/3) ... [2023-08-30 14:59:27,147 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2023-08-30 14:59:27,152 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:59:27,159 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:59:27,159 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-30 14:59:27,159 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:59:27,268 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:59:27,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 235 transitions, 486 flow [2023-08-30 14:59:27,384 INFO L130 PetriNetUnfolder]: 21/233 cut-off events. [2023-08-30 14:59:27,384 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 14:59:27,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 233 events. 21/233 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 340 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2023-08-30 14:59:27,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 235 transitions, 486 flow [2023-08-30 14:59:27,396 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 205 transitions, 419 flow [2023-08-30 14:59:27,399 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:59:27,414 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 205 transitions, 419 flow [2023-08-30 14:59:27,419 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 205 transitions, 419 flow [2023-08-30 14:59:27,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 205 transitions, 419 flow [2023-08-30 14:59:27,463 INFO L130 PetriNetUnfolder]: 18/205 cut-off events. [2023-08-30 14:59:27,464 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:59:27,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 205 events. 18/205 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 328 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2023-08-30 14:59:27,467 INFO L119 LiptonReduction]: Number of co-enabled transitions 4028 [2023-08-30 14:59:32,534 INFO L134 LiptonReduction]: Checked pairs total: 5000 [2023-08-30 14:59:32,535 INFO L136 LiptonReduction]: Total number of compositions: 225 [2023-08-30 14:59:32,544 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:59:32,547 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;@7f370072, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:59:32,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-30 14:59:32,550 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:59:32,550 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:59:32,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:59:32,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:59:32,551 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 14:59:32,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:59:32,553 INFO L85 PathProgramCache]: Analyzing trace with hash 28505, now seen corresponding path program 1 times [2023-08-30 14:59:32,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:59:32,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859164570] [2023-08-30 14:59:32,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:32,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:59:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:32,759 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 14:59:32,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:59:32,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859164570] [2023-08-30 14:59:32,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859164570] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:59:32,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:59:32,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:59:32,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979544689] [2023-08-30 14:59:32,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:59:32,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:59:32,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:59:32,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:59:32,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:59:32,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 460 [2023-08-30 14:59:32,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 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 14:59:32,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:59:32,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 460 [2023-08-30 14:59:32,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:59:32,989 INFO L130 PetriNetUnfolder]: 601/975 cut-off events. [2023-08-30 14:59:32,990 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2023-08-30 14:59:32,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1996 conditions, 975 events. 601/975 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4465 event pairs, 414 based on Foata normal form. 0/471 useless extension candidates. Maximal degree in co-relation 912. Up to 483 conditions per place. [2023-08-30 14:59:32,997 INFO L137 encePairwiseOnDemand]: 452/460 looper letters, 61 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2023-08-30 14:59:32,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 66 transitions, 280 flow [2023-08-30 14:59:32,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:59:33,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:59:33,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 708 transitions. [2023-08-30 14:59:33,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130434782608696 [2023-08-30 14:59:33,015 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 708 transitions. [2023-08-30 14:59:33,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 708 transitions. [2023-08-30 14:59:33,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:59:33,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 708 transitions. [2023-08-30 14:59:33,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 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 14:59:33,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 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 14:59:33,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 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 14:59:33,036 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 81 flow. Second operand 3 states and 708 transitions. [2023-08-30 14:59:33,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 66 transitions, 280 flow [2023-08-30 14:59:33,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 66 transitions, 270 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 14:59:33,043 INFO L231 Difference]: Finished difference. Result has 37 places, 39 transitions, 112 flow [2023-08-30 14:59:33,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=37, PETRI_TRANSITIONS=39} [2023-08-30 14:59:33,047 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2023-08-30 14:59:33,047 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 39 transitions, 112 flow [2023-08-30 14:59:33,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 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 14:59:33,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:59:33,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:59:33,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:59:33,050 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 14:59:33,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:59:33,058 INFO L85 PathProgramCache]: Analyzing trace with hash 884911, now seen corresponding path program 1 times [2023-08-30 14:59:33,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:59:33,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770563858] [2023-08-30 14:59:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:33,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:59:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:33,137 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 14:59:33,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:59:33,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770563858] [2023-08-30 14:59:33,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770563858] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:59:33,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655319111] [2023-08-30 14:59:33,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:33,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:59:33,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:59:33,148 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 14:59:33,160 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 14:59:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:33,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:59:33,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:59:33,244 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 14:59:33,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:59:33,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655319111] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:59:33,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:59:33,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:59:33,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553097022] [2023-08-30 14:59:33,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:59:33,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:59:33,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:59:33,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:59:33,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:59:33,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 460 [2023-08-30 14:59:33,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 39 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 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 14:59:33,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:59:33,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 460 [2023-08-30 14:59:33,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:59:33,455 INFO L130 PetriNetUnfolder]: 601/973 cut-off events. [2023-08-30 14:59:33,456 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-30 14:59:33,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1989 conditions, 973 events. 601/973 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4352 event pairs, 414 based on Foata normal form. 0/475 useless extension candidates. Maximal degree in co-relation 983. Up to 480 conditions per place. [2023-08-30 14:59:33,459 INFO L137 encePairwiseOnDemand]: 454/460 looper letters, 59 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-08-30 14:59:33,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 64 transitions, 288 flow [2023-08-30 14:59:33,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:59:33,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:59:33,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 917 transitions. [2023-08-30 14:59:33,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4983695652173913 [2023-08-30 14:59:33,462 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 917 transitions. [2023-08-30 14:59:33,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 917 transitions. [2023-08-30 14:59:33,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:59:33,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 917 transitions. [2023-08-30 14:59:33,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 229.25) internal successors, (917), 4 states have internal predecessors, (917), 0 states have call successors, (0), 0 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 14:59:33,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 states have internal predecessors, (2300), 0 states have call successors, (0), 0 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 14:59:33,467 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 states have internal predecessors, (2300), 0 states have call successors, (0), 0 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 14:59:33,468 INFO L175 Difference]: Start difference. First operand has 37 places, 39 transitions, 112 flow. Second operand 4 states and 917 transitions. [2023-08-30 14:59:33,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 64 transitions, 288 flow [2023-08-30 14:59:33,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 64 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:59:33,469 INFO L231 Difference]: Finished difference. Result has 36 places, 37 transitions, 104 flow [2023-08-30 14:59:33,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=36, PETRI_TRANSITIONS=37} [2023-08-30 14:59:33,471 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-08-30 14:59:33,472 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 37 transitions, 104 flow [2023-08-30 14:59:33,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 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 14:59:33,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:59:33,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:59:33,477 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 14:59:33,678 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 14:59:33,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 14:59:33,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:59:33,680 INFO L85 PathProgramCache]: Analyzing trace with hash 884912, now seen corresponding path program 1 times [2023-08-30 14:59:33,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:59:33,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710232485] [2023-08-30 14:59:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:33,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:59:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:33,725 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 14:59:33,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:59:33,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710232485] [2023-08-30 14:59:33,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710232485] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:59:33,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907265123] [2023-08-30 14:59:33,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:33,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:59:33,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:59:33,728 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 14:59:33,745 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 14:59:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:33,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:59:33,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:59:33,786 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 14:59:33,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:59:33,797 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 14:59:33,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907265123] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:59:33,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:59:33,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 14:59:33,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811518635] [2023-08-30 14:59:33,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:59:33,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:59:33,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:59:33,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:59:33,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:59:33,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 460 [2023-08-30 14:59:33,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 104 flow. Second operand has 7 states, 7 states have (on average 214.14285714285714) internal successors, (1499), 7 states have internal predecessors, (1499), 0 states have call successors, (0), 0 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 14:59:33,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:59:33,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 460 [2023-08-30 14:59:33,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:59:34,151 INFO L130 PetriNetUnfolder]: 1501/2428 cut-off events. [2023-08-30 14:59:34,152 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-30 14:59:34,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4950 conditions, 2428 events. 1501/2428 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 12437 event pairs, 1035 based on Foata normal form. 0/1198 useless extension candidates. Maximal degree in co-relation 3923. Up to 481 conditions per place. [2023-08-30 14:59:34,159 INFO L137 encePairwiseOnDemand]: 454/460 looper letters, 140 selfloop transitions, 13 changer transitions 0/154 dead transitions. [2023-08-30 14:59:34,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 154 transitions, 684 flow [2023-08-30 14:59:34,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:59:34,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:59:34,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1437 transitions. [2023-08-30 14:59:34,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5206521739130435 [2023-08-30 14:59:34,162 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1437 transitions. [2023-08-30 14:59:34,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1437 transitions. [2023-08-30 14:59:34,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:59:34,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1437 transitions. [2023-08-30 14:59:34,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 239.5) internal successors, (1437), 6 states have internal predecessors, (1437), 0 states have call successors, (0), 0 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 14:59:34,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 460.0) internal successors, (3220), 7 states have internal predecessors, (3220), 0 states have call successors, (0), 0 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 14:59:34,170 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 460.0) internal successors, (3220), 7 states have internal predecessors, (3220), 0 states have call successors, (0), 0 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 14:59:34,170 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 104 flow. Second operand 6 states and 1437 transitions. [2023-08-30 14:59:34,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 154 transitions, 684 flow [2023-08-30 14:59:34,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 154 transitions, 676 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:59:34,173 INFO L231 Difference]: Finished difference. Result has 42 places, 46 transitions, 195 flow [2023-08-30 14:59:34,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=195, PETRI_PLACES=42, PETRI_TRANSITIONS=46} [2023-08-30 14:59:34,173 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2023-08-30 14:59:34,173 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 46 transitions, 195 flow [2023-08-30 14:59:34,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 214.14285714285714) internal successors, (1499), 7 states have internal predecessors, (1499), 0 states have call successors, (0), 0 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 14:59:34,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:59:34,175 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 14:59:34,181 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 14:59:34,379 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 14:59:34,379 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 14:59:34,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:59:34,380 INFO L85 PathProgramCache]: Analyzing trace with hash 593827034, now seen corresponding path program 2 times [2023-08-30 14:59:34,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:59:34,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477386054] [2023-08-30 14:59:34,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:34,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:59:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:34,450 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 14:59:34,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:59:34,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477386054] [2023-08-30 14:59:34,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477386054] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:59:34,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936986649] [2023-08-30 14:59:34,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:59:34,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:59:34,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:59:34,452 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 14:59:34,454 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 14:59:34,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:59:34,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:59:34,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:59:34,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:59:34,517 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 14:59:34,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:59:34,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936986649] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:59:34,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:59:34,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 14:59:34,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778912325] [2023-08-30 14:59:34,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:59:34,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:59:34,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:59:34,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:59:34,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 14:59:34,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 460 [2023-08-30 14:59:34,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 46 transitions, 195 flow. Second operand has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 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 14:59:34,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:59:34,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 460 [2023-08-30 14:59:34,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:59:34,765 INFO L130 PetriNetUnfolder]: 1501/2427 cut-off events. [2023-08-30 14:59:34,765 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-08-30 14:59:34,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4972 conditions, 2427 events. 1501/2427 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 13017 event pairs, 1035 based on Foata normal form. 1/1168 useless extension candidates. Maximal degree in co-relation 3933. Up to 2382 conditions per place. [2023-08-30 14:59:34,773 INFO L137 encePairwiseOnDemand]: 457/460 looper letters, 38 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2023-08-30 14:59:34,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 273 flow [2023-08-30 14:59:34,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:59:34,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:59:34,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 678 transitions. [2023-08-30 14:59:34,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49130434782608695 [2023-08-30 14:59:34,775 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 678 transitions. [2023-08-30 14:59:34,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 678 transitions. [2023-08-30 14:59:34,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:59:34,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 678 transitions. [2023-08-30 14:59:34,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 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 14:59:34,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 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 14:59:34,779 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 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 14:59:34,779 INFO L175 Difference]: Start difference. First operand has 42 places, 46 transitions, 195 flow. Second operand 3 states and 678 transitions. [2023-08-30 14:59:34,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 273 flow [2023-08-30 14:59:34,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 254 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:59:34,781 INFO L231 Difference]: Finished difference. Result has 42 places, 45 transitions, 178 flow [2023-08-30 14:59:34,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=42, PETRI_TRANSITIONS=45} [2023-08-30 14:59:34,782 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2023-08-30 14:59:34,782 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 45 transitions, 178 flow [2023-08-30 14:59:34,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 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 14:59:34,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:59:34,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:59:34,789 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 14:59:34,987 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 14:59:34,988 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 14:59:34,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:59:34,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1919050114, now seen corresponding path program 1 times [2023-08-30 14:59:34,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:59:34,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292671583] [2023-08-30 14:59:34,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:34,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:59:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:35,057 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 14:59:35,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:59:35,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292671583] [2023-08-30 14:59:35,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292671583] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:59:35,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:59:35,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:59:35,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782373503] [2023-08-30 14:59:35,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:59:35,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:59:35,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:59:35,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:59:35,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:59:35,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 460 [2023-08-30 14:59:35,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 45 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 204.4) internal successors, (1022), 5 states have internal predecessors, (1022), 0 states have call successors, (0), 0 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 14:59:35,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:59:35,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 460 [2023-08-30 14:59:35,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:59:35,429 INFO L130 PetriNetUnfolder]: 1427/2317 cut-off events. [2023-08-30 14:59:35,429 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-08-30 14:59:35,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4746 conditions, 2317 events. 1427/2317 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 12274 event pairs, 795 based on Foata normal form. 0/1167 useless extension candidates. Maximal degree in co-relation 4690. Up to 1527 conditions per place. [2023-08-30 14:59:35,437 INFO L137 encePairwiseOnDemand]: 452/460 looper letters, 82 selfloop transitions, 10 changer transitions 0/93 dead transitions. [2023-08-30 14:59:35,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 93 transitions, 465 flow [2023-08-30 14:59:35,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:59:35,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:59:35,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1303 transitions. [2023-08-30 14:59:35,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4721014492753623 [2023-08-30 14:59:35,440 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1303 transitions. [2023-08-30 14:59:35,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1303 transitions. [2023-08-30 14:59:35,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:59:35,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1303 transitions. [2023-08-30 14:59:35,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 217.16666666666666) internal successors, (1303), 6 states have internal predecessors, (1303), 0 states have call successors, (0), 0 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 14:59:35,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 460.0) internal successors, (3220), 7 states have internal predecessors, (3220), 0 states have call successors, (0), 0 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 14:59:35,446 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 460.0) internal successors, (3220), 7 states have internal predecessors, (3220), 0 states have call successors, (0), 0 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 14:59:35,447 INFO L175 Difference]: Start difference. First operand has 42 places, 45 transitions, 178 flow. Second operand 6 states and 1303 transitions. [2023-08-30 14:59:35,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 93 transitions, 465 flow [2023-08-30 14:59:35,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 93 transitions, 453 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:59:35,449 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 220 flow [2023-08-30 14:59:35,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2023-08-30 14:59:35,449 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2023-08-30 14:59:35,450 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 220 flow [2023-08-30 14:59:35,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 204.4) internal successors, (1022), 5 states have internal predecessors, (1022), 0 states have call successors, (0), 0 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 14:59:35,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:59:35,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:59:35,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:59:35,451 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 14:59:35,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:59:35,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1919050216, now seen corresponding path program 1 times [2023-08-30 14:59:35,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:59:35,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306268257] [2023-08-30 14:59:35,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:35,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:59:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:35,512 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 14:59:35,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:59:35,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306268257] [2023-08-30 14:59:35,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306268257] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:59:35,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:59:35,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:59:35,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781020135] [2023-08-30 14:59:35,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:59:35,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:59:35,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:59:35,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:59:35,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:59:35,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 460 [2023-08-30 14:59:35,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 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 14:59:35,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:59:35,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 460 [2023-08-30 14:59:35,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:59:35,883 INFO L130 PetriNetUnfolder]: 2484/3939 cut-off events. [2023-08-30 14:59:35,883 INFO L131 PetriNetUnfolder]: For 1149/1149 co-relation queries the response was YES. [2023-08-30 14:59:35,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8872 conditions, 3939 events. 2484/3939 cut-off events. For 1149/1149 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 22146 event pairs, 1540 based on Foata normal form. 166/2603 useless extension candidates. Maximal degree in co-relation 6493. Up to 1943 conditions per place. [2023-08-30 14:59:35,898 INFO L137 encePairwiseOnDemand]: 453/460 looper letters, 74 selfloop transitions, 5 changer transitions 0/80 dead transitions. [2023-08-30 14:59:35,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 80 transitions, 492 flow [2023-08-30 14:59:35,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:59:35,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:59:35,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 883 transitions. [2023-08-30 14:59:35,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47989130434782606 [2023-08-30 14:59:35,901 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 883 transitions. [2023-08-30 14:59:35,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 883 transitions. [2023-08-30 14:59:35,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:59:35,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 883 transitions. [2023-08-30 14:59:35,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 0 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 14:59:35,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 states have internal predecessors, (2300), 0 states have call successors, (0), 0 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 14:59:35,906 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 states have internal predecessors, (2300), 0 states have call successors, (0), 0 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 14:59:35,906 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 220 flow. Second operand 4 states and 883 transitions. [2023-08-30 14:59:35,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 80 transitions, 492 flow [2023-08-30 14:59:35,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 80 transitions, 482 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 14:59:35,909 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 253 flow [2023-08-30 14:59:35,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=253, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2023-08-30 14:59:35,909 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2023-08-30 14:59:35,910 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 253 flow [2023-08-30 14:59:35,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 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 14:59:35,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:59:35,910 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 14:59:35,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:59:35,910 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 14:59:35,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:59:35,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1920641260, now seen corresponding path program 1 times [2023-08-30 14:59:35,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:59:35,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777744792] [2023-08-30 14:59:35,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:35,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:59:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:35,967 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 14:59:35,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:59:35,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777744792] [2023-08-30 14:59:35,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777744792] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:59:35,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642589462] [2023-08-30 14:59:35,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:35,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:59:35,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:59:35,986 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 14:59:36,021 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 14:59:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:36,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 14:59:36,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:59:36,091 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 14:59:36,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:59:36,140 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 14:59:36,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642589462] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:59:36,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:59:36,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 14:59:36,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762683029] [2023-08-30 14:59:36,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:59:36,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:59:36,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:59:36,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:59:36,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:59:36,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 460 [2023-08-30 14:59:36,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 253 flow. Second operand has 13 states, 13 states have (on average 214.15384615384616) internal successors, (2784), 13 states have internal predecessors, (2784), 0 states have call successors, (0), 0 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 14:59:36,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:59:36,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 460 [2023-08-30 14:59:36,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:59:37,092 INFO L130 PetriNetUnfolder]: 5562/8799 cut-off events. [2023-08-30 14:59:37,093 INFO L131 PetriNetUnfolder]: For 5534/5534 co-relation queries the response was YES. [2023-08-30 14:59:37,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21253 conditions, 8799 events. 5562/8799 cut-off events. For 5534/5534 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 52636 event pairs, 3436 based on Foata normal form. 12/5521 useless extension candidates. Maximal degree in co-relation 15244. Up to 1174 conditions per place. [2023-08-30 14:59:37,144 INFO L137 encePairwiseOnDemand]: 455/460 looper letters, 339 selfloop transitions, 31 changer transitions 0/371 dead transitions. [2023-08-30 14:59:37,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 371 transitions, 2217 flow [2023-08-30 14:59:37,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:59:37,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:59:37,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2892 transitions. [2023-08-30 14:59:37,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5239130434782608 [2023-08-30 14:59:37,151 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2892 transitions. [2023-08-30 14:59:37,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2892 transitions. [2023-08-30 14:59:37,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:59:37,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2892 transitions. [2023-08-30 14:59:37,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 241.0) internal successors, (2892), 12 states have internal predecessors, (2892), 0 states have call successors, (0), 0 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 14:59:37,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 460.0) internal successors, (5980), 13 states have internal predecessors, (5980), 0 states have call successors, (0), 0 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 14:59:37,164 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 460.0) internal successors, (5980), 13 states have internal predecessors, (5980), 0 states have call successors, (0), 0 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 14:59:37,164 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 253 flow. Second operand 12 states and 2892 transitions. [2023-08-30 14:59:37,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 371 transitions, 2217 flow [2023-08-30 14:59:37,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 371 transitions, 2160 flow, removed 22 selfloop flow, removed 1 redundant places. [2023-08-30 14:59:37,176 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 460 flow [2023-08-30 14:59:37,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=460, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2023-08-30 14:59:37,177 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-08-30 14:59:37,177 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 460 flow [2023-08-30 14:59:37,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 214.15384615384616) internal successors, (2784), 13 states have internal predecessors, (2784), 0 states have call successors, (0), 0 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 14:59:37,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:59:37,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:59:37,187 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 14:59:37,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:59:37,383 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 14:59:37,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:59:37,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1919050000, now seen corresponding path program 1 times [2023-08-30 14:59:37,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:59:37,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386938597] [2023-08-30 14:59:37,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:37,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:59:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:37,417 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 14:59:37,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:59:37,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386938597] [2023-08-30 14:59:37,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386938597] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:59:37,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:59:37,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:59:37,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263920025] [2023-08-30 14:59:37,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:59:37,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:59:37,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:59:37,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:59:37,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:59:37,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 460 [2023-08-30 14:59:37,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 460 flow. Second operand has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 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 14:59:37,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:59:37,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 460 [2023-08-30 14:59:37,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:59:38,682 INFO L130 PetriNetUnfolder]: 9281/15018 cut-off events. [2023-08-30 14:59:38,683 INFO L131 PetriNetUnfolder]: For 7895/7895 co-relation queries the response was YES. [2023-08-30 14:59:38,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35649 conditions, 15018 events. 9281/15018 cut-off events. For 7895/7895 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 103894 event pairs, 3436 based on Foata normal form. 0/9900 useless extension candidates. Maximal degree in co-relation 28969. Up to 8624 conditions per place. [2023-08-30 14:59:38,737 INFO L137 encePairwiseOnDemand]: 456/460 looper letters, 90 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2023-08-30 14:59:38,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 93 transitions, 741 flow [2023-08-30 14:59:38,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:59:38,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:59:38,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 706 transitions. [2023-08-30 14:59:38,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115942028985507 [2023-08-30 14:59:38,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 706 transitions. [2023-08-30 14:59:38,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 706 transitions. [2023-08-30 14:59:38,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:59:38,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 706 transitions. [2023-08-30 14:59:38,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 0 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 14:59:38,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 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 14:59:38,743 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 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 14:59:38,743 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 460 flow. Second operand 3 states and 706 transitions. [2023-08-30 14:59:38,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 93 transitions, 741 flow [2023-08-30 14:59:38,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 93 transitions, 651 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-08-30 14:59:38,754 INFO L231 Difference]: Finished difference. Result has 67 places, 69 transitions, 384 flow [2023-08-30 14:59:38,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=67, PETRI_TRANSITIONS=69} [2023-08-30 14:59:38,756 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 31 predicate places. [2023-08-30 14:59:38,757 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 69 transitions, 384 flow [2023-08-30 14:59:38,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 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 14:59:38,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:59:38,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:59:38,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:59:38,757 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 14:59:38,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:59:38,758 INFO L85 PathProgramCache]: Analyzing trace with hash -591253449, now seen corresponding path program 1 times [2023-08-30 14:59:38,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:59:38,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675460254] [2023-08-30 14:59:38,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:38,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:59:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:38,836 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 14:59:38,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:59:38,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675460254] [2023-08-30 14:59:38,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675460254] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:59:38,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423229722] [2023-08-30 14:59:38,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:38,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:59:38,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:59:38,839 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 14:59:38,841 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 14:59:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:38,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:59:38,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:59:38,940 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 14:59:38,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:59:38,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423229722] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:59:38,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:59:38,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-30 14:59:38,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059144769] [2023-08-30 14:59:38,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:59:38,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:59:38,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:59:38,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:59:38,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:59:38,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 460 [2023-08-30 14:59:38,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 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 14:59:38,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:59:38,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 460 [2023-08-30 14:59:38,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:59:39,741 INFO L130 PetriNetUnfolder]: 6667/10662 cut-off events. [2023-08-30 14:59:39,741 INFO L131 PetriNetUnfolder]: For 8481/8481 co-relation queries the response was YES. [2023-08-30 14:59:39,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25218 conditions, 10662 events. 6667/10662 cut-off events. For 8481/8481 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 66806 event pairs, 4239 based on Foata normal form. 1000/8450 useless extension candidates. Maximal degree in co-relation 22969. Up to 10530 conditions per place. [2023-08-30 14:59:39,799 INFO L137 encePairwiseOnDemand]: 456/460 looper letters, 62 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-08-30 14:59:39,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 476 flow [2023-08-30 14:59:39,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:59:39,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:59:39,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 677 transitions. [2023-08-30 14:59:39,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4905797101449275 [2023-08-30 14:59:39,801 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 677 transitions. [2023-08-30 14:59:39,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 677 transitions. [2023-08-30 14:59:39,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:59:39,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 677 transitions. [2023-08-30 14:59:39,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 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 14:59:39,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 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 14:59:39,806 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 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 14:59:39,806 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 384 flow. Second operand 3 states and 677 transitions. [2023-08-30 14:59:39,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 476 flow [2023-08-30 14:59:39,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 64 transitions, 467 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 14:59:39,814 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 343 flow [2023-08-30 14:59:39,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=343, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2023-08-30 14:59:39,815 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 25 predicate places. [2023-08-30 14:59:39,815 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 343 flow [2023-08-30 14:59:39,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 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 14:59:39,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:59:39,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:59:39,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 14:59:40,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:59:40,021 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 14:59:40,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:59:40,021 INFO L85 PathProgramCache]: Analyzing trace with hash -637678429, now seen corresponding path program 1 times [2023-08-30 14:59:40,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:59:40,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873279927] [2023-08-30 14:59:40,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:40,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:59:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:40,058 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 14:59:40,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:59:40,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873279927] [2023-08-30 14:59:40,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873279927] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:59:40,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:59:40,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:59:40,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523834041] [2023-08-30 14:59:40,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:59:40,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:59:40,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:59:40,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:59:40,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:59:40,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 460 [2023-08-30 14:59:40,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 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 14:59:40,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:59:40,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 460 [2023-08-30 14:59:40,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:59:41,438 INFO L130 PetriNetUnfolder]: 9560/15557 cut-off events. [2023-08-30 14:59:41,438 INFO L131 PetriNetUnfolder]: For 2943/2943 co-relation queries the response was YES. [2023-08-30 14:59:41,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36484 conditions, 15557 events. 9560/15557 cut-off events. For 2943/2943 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 107967 event pairs, 4239 based on Foata normal form. 0/11333 useless extension candidates. Maximal degree in co-relation 36461. Up to 10531 conditions per place. [2023-08-30 14:59:41,489 INFO L137 encePairwiseOnDemand]: 457/460 looper letters, 81 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-08-30 14:59:41,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 84 transitions, 578 flow [2023-08-30 14:59:41,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:59:41,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:59:41,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 698 transitions. [2023-08-30 14:59:41,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057971014492754 [2023-08-30 14:59:41,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 698 transitions. [2023-08-30 14:59:41,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 698 transitions. [2023-08-30 14:59:41,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:59:41,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 698 transitions. [2023-08-30 14:59:41,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 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 14:59:41,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 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 14:59:41,495 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 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 14:59:41,495 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 343 flow. Second operand 3 states and 698 transitions. [2023-08-30 14:59:41,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 84 transitions, 578 flow [2023-08-30 14:59:41,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 84 transitions, 577 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:59:41,499 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 354 flow [2023-08-30 14:59:41,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2023-08-30 14:59:41,500 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2023-08-30 14:59:41,500 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 354 flow [2023-08-30 14:59:41,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 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 14:59:41,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:59:41,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:59:41,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:59:41,501 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 14:59:41,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:59:41,501 INFO L85 PathProgramCache]: Analyzing trace with hash 127448658, now seen corresponding path program 1 times [2023-08-30 14:59:41,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:59:41,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086592190] [2023-08-30 14:59:41,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:41,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:59:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:41,553 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 14:59:41,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:59:41,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086592190] [2023-08-30 14:59:41,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086592190] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:59:41,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610468932] [2023-08-30 14:59:41,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:41,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:59:41,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:59:41,555 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 14:59:41,557 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 14:59:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:41,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:59:41,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:59:41,635 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 14:59:41,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:59:41,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610468932] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:59:41,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:59:41,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 14:59:41,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746508716] [2023-08-30 14:59:41,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:59:41,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:59:41,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:59:41,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:59:41,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:59:41,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 460 [2023-08-30 14:59:41,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 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 14:59:41,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:59:41,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 460 [2023-08-30 14:59:41,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:59:42,445 INFO L130 PetriNetUnfolder]: 7866/12807 cut-off events. [2023-08-30 14:59:42,445 INFO L131 PetriNetUnfolder]: For 5363/5363 co-relation queries the response was YES. [2023-08-30 14:59:42,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30853 conditions, 12807 events. 7866/12807 cut-off events. For 5363/5363 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 85253 event pairs, 5302 based on Foata normal form. 968/11707 useless extension candidates. Maximal degree in co-relation 30829. Up to 12443 conditions per place. [2023-08-30 14:59:42,486 INFO L137 encePairwiseOnDemand]: 456/460 looper letters, 48 selfloop transitions, 12 changer transitions 0/61 dead transitions. [2023-08-30 14:59:42,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 448 flow [2023-08-30 14:59:42,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:59:42,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:59:42,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 881 transitions. [2023-08-30 14:59:42,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47880434782608694 [2023-08-30 14:59:42,489 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 881 transitions. [2023-08-30 14:59:42,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 881 transitions. [2023-08-30 14:59:42,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:59:42,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 881 transitions. [2023-08-30 14:59:42,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 220.25) internal successors, (881), 4 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 14:59:42,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 states have internal predecessors, (2300), 0 states have call successors, (0), 0 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 14:59:42,493 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 states have internal predecessors, (2300), 0 states have call successors, (0), 0 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 14:59:42,493 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 354 flow. Second operand 4 states and 881 transitions. [2023-08-30 14:59:42,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 448 flow [2023-08-30 14:59:42,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 61 transitions, 441 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 14:59:42,509 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 345 flow [2023-08-30 14:59:42,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=345, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2023-08-30 14:59:42,509 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2023-08-30 14:59:42,509 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 345 flow [2023-08-30 14:59:42,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 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 14:59:42,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:59:42,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:59:42,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 14:59:42,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:59:42,716 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 14:59:42,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:59:42,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1706806790, now seen corresponding path program 1 times [2023-08-30 14:59:42,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:59:42,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103099487] [2023-08-30 14:59:42,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:42,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:59:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:42,752 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 14:59:42,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:59:42,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103099487] [2023-08-30 14:59:42,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103099487] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:59:42,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:59:42,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:59:42,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571666216] [2023-08-30 14:59:42,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:59:42,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:59:42,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:59:42,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:59:42,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:59:42,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 460 [2023-08-30 14:59:42,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 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 14:59:42,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:59:42,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 460 [2023-08-30 14:59:42,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:59:43,520 INFO L130 PetriNetUnfolder]: 7206/12059 cut-off events. [2023-08-30 14:59:43,520 INFO L131 PetriNetUnfolder]: For 1628/1628 co-relation queries the response was YES. [2023-08-30 14:59:43,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28132 conditions, 12059 events. 7206/12059 cut-off events. For 1628/1628 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 84549 event pairs, 1694 based on Foata normal form. 0/10827 useless extension candidates. Maximal degree in co-relation 28110. Up to 7612 conditions per place. [2023-08-30 14:59:43,550 INFO L137 encePairwiseOnDemand]: 458/460 looper letters, 58 selfloop transitions, 1 changer transitions 15/74 dead transitions. [2023-08-30 14:59:43,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 74 transitions, 526 flow [2023-08-30 14:59:43,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:59:43,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:59:43,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 691 transitions. [2023-08-30 14:59:43,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5007246376811594 [2023-08-30 14:59:43,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 691 transitions. [2023-08-30 14:59:43,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 691 transitions. [2023-08-30 14:59:43,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:59:43,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 691 transitions. [2023-08-30 14:59:43,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 0 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 14:59:43,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 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 14:59:43,556 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 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 14:59:43,556 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 345 flow. Second operand 3 states and 691 transitions. [2023-08-30 14:59:43,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 74 transitions, 526 flow [2023-08-30 14:59:43,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 74 transitions, 513 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:59:43,565 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 313 flow [2023-08-30 14:59:43,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2023-08-30 14:59:43,566 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2023-08-30 14:59:43,566 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 313 flow [2023-08-30 14:59:43,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 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 14:59:43,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:59:43,567 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:59:43,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:59:43,567 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 14:59:43,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:59:43,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1666121501, now seen corresponding path program 1 times [2023-08-30 14:59:43,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:59:43,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136144157] [2023-08-30 14:59:43,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:43,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:59:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:43,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:59:43,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:59:43,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136144157] [2023-08-30 14:59:43,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136144157] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:59:43,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:59:43,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:59:43,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294629151] [2023-08-30 14:59:43,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:59:43,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:59:43,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:59:43,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:59:43,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:59:43,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 460 [2023-08-30 14:59:43,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 313 flow. Second operand has 5 states, 5 states have (on average 207.8) internal successors, (1039), 5 states have internal predecessors, (1039), 0 states have call successors, (0), 0 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 14:59:43,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:59:43,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 460 [2023-08-30 14:59:43,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:59:44,059 INFO L130 PetriNetUnfolder]: 1860/3303 cut-off events. [2023-08-30 14:59:44,059 INFO L131 PetriNetUnfolder]: For 1280/1280 co-relation queries the response was YES. [2023-08-30 14:59:44,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8705 conditions, 3303 events. 1860/3303 cut-off events. For 1280/1280 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 19226 event pairs, 1298 based on Foata normal form. 154/3149 useless extension candidates. Maximal degree in co-relation 8684. Up to 2674 conditions per place. [2023-08-30 14:59:44,073 INFO L137 encePairwiseOnDemand]: 455/460 looper letters, 61 selfloop transitions, 3 changer transitions 20/84 dead transitions. [2023-08-30 14:59:44,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 84 transitions, 636 flow [2023-08-30 14:59:44,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:59:44,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:59:44,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1071 transitions. [2023-08-30 14:59:44,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656521739130435 [2023-08-30 14:59:44,077 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1071 transitions. [2023-08-30 14:59:44,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1071 transitions. [2023-08-30 14:59:44,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:59:44,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1071 transitions. [2023-08-30 14:59:44,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 214.2) internal successors, (1071), 5 states have internal predecessors, (1071), 0 states have call successors, (0), 0 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 14:59:44,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 460.0) internal successors, (2760), 6 states have internal predecessors, (2760), 0 states have call successors, (0), 0 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 14:59:44,081 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 460.0) internal successors, (2760), 6 states have internal predecessors, (2760), 0 states have call successors, (0), 0 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 14:59:44,081 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 313 flow. Second operand 5 states and 1071 transitions. [2023-08-30 14:59:44,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 84 transitions, 636 flow [2023-08-30 14:59:44,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 84 transitions, 633 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:59:44,087 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 323 flow [2023-08-30 14:59:44,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=323, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2023-08-30 14:59:44,087 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2023-08-30 14:59:44,087 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 323 flow [2023-08-30 14:59:44,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 207.8) internal successors, (1039), 5 states have internal predecessors, (1039), 0 states have call successors, (0), 0 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 14:59:44,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:59:44,088 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:59:44,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:59:44,088 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 14:59:44,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:59:44,089 INFO L85 PathProgramCache]: Analyzing trace with hash -2076057337, now seen corresponding path program 1 times [2023-08-30 14:59:44,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:59:44,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950609606] [2023-08-30 14:59:44,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:44,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:59:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:44,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:59:44,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:59:44,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950609606] [2023-08-30 14:59:44,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950609606] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:59:44,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:59:44,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 14:59:44,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944877445] [2023-08-30 14:59:44,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:59:44,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:59:44,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:59:44,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:59:44,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:59:44,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 460 [2023-08-30 14:59:44,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 323 flow. Second operand has 5 states, 5 states have (on average 208.0) internal successors, (1040), 5 states have internal predecessors, (1040), 0 states have call successors, (0), 0 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 14:59:44,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:59:44,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 460 [2023-08-30 14:59:44,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:59:44,565 INFO L130 PetriNetUnfolder]: 1526/2745 cut-off events. [2023-08-30 14:59:44,565 INFO L131 PetriNetUnfolder]: For 1042/1042 co-relation queries the response was YES. [2023-08-30 14:59:44,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7658 conditions, 2745 events. 1526/2745 cut-off events. For 1042/1042 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 15437 event pairs, 1190 based on Foata normal form. 14/2479 useless extension candidates. Maximal degree in co-relation 7634. Up to 2657 conditions per place. [2023-08-30 14:59:44,576 INFO L137 encePairwiseOnDemand]: 455/460 looper letters, 39 selfloop transitions, 12 changer transitions 19/70 dead transitions. [2023-08-30 14:59:44,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 70 transitions, 522 flow [2023-08-30 14:59:44,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:59:44,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:59:44,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1068 transitions. [2023-08-30 14:59:44,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643478260869565 [2023-08-30 14:59:44,579 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1068 transitions. [2023-08-30 14:59:44,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1068 transitions. [2023-08-30 14:59:44,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:59:44,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1068 transitions. [2023-08-30 14:59:44,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 213.6) internal successors, (1068), 5 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:59:44,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 460.0) internal successors, (2760), 6 states have internal predecessors, (2760), 0 states have call successors, (0), 0 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 14:59:44,583 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 460.0) internal successors, (2760), 6 states have internal predecessors, (2760), 0 states have call successors, (0), 0 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 14:59:44,583 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 323 flow. Second operand 5 states and 1068 transitions. [2023-08-30 14:59:44,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 70 transitions, 522 flow [2023-08-30 14:59:44,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 70 transitions, 515 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 14:59:44,589 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 339 flow [2023-08-30 14:59:44,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=339, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2023-08-30 14:59:44,589 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2023-08-30 14:59:44,589 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 339 flow [2023-08-30 14:59:44,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 208.0) internal successors, (1040), 5 states have internal predecessors, (1040), 0 states have call successors, (0), 0 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 14:59:44,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:59:44,590 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:59:44,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:59:44,590 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 14:59:44,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:59:44,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1302376472, now seen corresponding path program 1 times [2023-08-30 14:59:44,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:59:44,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459378065] [2023-08-30 14:59:44,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:44,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:59:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:44,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:59:44,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:59:44,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459378065] [2023-08-30 14:59:44,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459378065] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:59:44,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014101329] [2023-08-30 14:59:44,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:44,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:59:44,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:59:44,649 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 14:59:44,698 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 14:59:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:44,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 14:59:44,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:59:44,806 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 14:59:44,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:59:44,849 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 14:59:44,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014101329] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:59:44,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:59:44,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 13 [2023-08-30 14:59:44,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893461798] [2023-08-30 14:59:44,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:59:44,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:59:44,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:59:44,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:59:44,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:59:45,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 460 [2023-08-30 14:59:45,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 339 flow. Second operand has 13 states, 13 states have (on average 204.07692307692307) internal successors, (2653), 13 states have internal predecessors, (2653), 0 states have call successors, (0), 0 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 14:59:45,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:59:45,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 460 [2023-08-30 14:59:45,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:59:45,558 INFO L130 PetriNetUnfolder]: 1238/2245 cut-off events. [2023-08-30 14:59:45,558 INFO L131 PetriNetUnfolder]: For 1253/1253 co-relation queries the response was YES. [2023-08-30 14:59:45,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6444 conditions, 2245 events. 1238/2245 cut-off events. For 1253/1253 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 12874 event pairs, 100 based on Foata normal form. 14/2133 useless extension candidates. Maximal degree in co-relation 6420. Up to 1044 conditions per place. [2023-08-30 14:59:45,567 INFO L137 encePairwiseOnDemand]: 452/460 looper letters, 51 selfloop transitions, 16 changer transitions 29/96 dead transitions. [2023-08-30 14:59:45,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 96 transitions, 679 flow [2023-08-30 14:59:45,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 14:59:45,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 14:59:45,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2084 transitions. [2023-08-30 14:59:45,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45304347826086955 [2023-08-30 14:59:45,571 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2084 transitions. [2023-08-30 14:59:45,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2084 transitions. [2023-08-30 14:59:45,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:59:45,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2084 transitions. [2023-08-30 14:59:45,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 208.4) internal successors, (2084), 10 states have internal predecessors, (2084), 0 states have call successors, (0), 0 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 14:59:45,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 460.0) internal successors, (5060), 11 states have internal predecessors, (5060), 0 states have call successors, (0), 0 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 14:59:45,578 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 460.0) internal successors, (5060), 11 states have internal predecessors, (5060), 0 states have call successors, (0), 0 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 14:59:45,578 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 339 flow. Second operand 10 states and 2084 transitions. [2023-08-30 14:59:45,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 96 transitions, 679 flow [2023-08-30 14:59:45,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 96 transitions, 645 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-30 14:59:45,585 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 345 flow [2023-08-30 14:59:45,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=345, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2023-08-30 14:59:45,586 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2023-08-30 14:59:45,586 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 345 flow [2023-08-30 14:59:45,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 204.07692307692307) internal successors, (2653), 13 states have internal predecessors, (2653), 0 states have call successors, (0), 0 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 14:59:45,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:59:45,587 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:59:45,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 14:59:45,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:59:45,791 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 14:59:45,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:59:45,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1206893862, now seen corresponding path program 1 times [2023-08-30 14:59:45,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:59:45,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792613607] [2023-08-30 14:59:45,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:45,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:59:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:45,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 14:59:45,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:59:45,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792613607] [2023-08-30 14:59:45,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792613607] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:59:45,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498340737] [2023-08-30 14:59:45,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:45,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:59:45,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:59:45,828 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 14:59:45,830 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 14:59:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:45,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 14:59:45,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:59:45,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 14:59:45,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:59:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 14:59:45,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498340737] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:59:45,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:59:45,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-08-30 14:59:45,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147214807] [2023-08-30 14:59:45,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:59:45,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:59:45,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:59:45,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:59:45,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:59:46,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 460 [2023-08-30 14:59:46,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 345 flow. Second operand has 13 states, 13 states have (on average 204.23076923076923) internal successors, (2655), 13 states have internal predecessors, (2655), 0 states have call successors, (0), 0 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 14:59:46,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:59:46,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 460 [2023-08-30 14:59:46,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:59:46,811 INFO L130 PetriNetUnfolder]: 2127/3839 cut-off events. [2023-08-30 14:59:46,811 INFO L131 PetriNetUnfolder]: For 2574/2574 co-relation queries the response was YES. [2023-08-30 14:59:46,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11270 conditions, 3839 events. 2127/3839 cut-off events. For 2574/2574 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 24911 event pairs, 621 based on Foata normal form. 126/3839 useless extension candidates. Maximal degree in co-relation 11246. Up to 1273 conditions per place. [2023-08-30 14:59:46,826 INFO L137 encePairwiseOnDemand]: 451/460 looper letters, 72 selfloop transitions, 11 changer transitions 29/112 dead transitions. [2023-08-30 14:59:46,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 112 transitions, 846 flow [2023-08-30 14:59:46,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:59:46,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:59:46,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2496 transitions. [2023-08-30 14:59:46,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45217391304347826 [2023-08-30 14:59:46,830 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2496 transitions. [2023-08-30 14:59:46,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2496 transitions. [2023-08-30 14:59:46,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:59:46,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2496 transitions. [2023-08-30 14:59:46,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 208.0) internal successors, (2496), 12 states have internal predecessors, (2496), 0 states have call successors, (0), 0 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 14:59:46,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 460.0) internal successors, (5980), 13 states have internal predecessors, (5980), 0 states have call successors, (0), 0 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 14:59:46,839 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 460.0) internal successors, (5980), 13 states have internal predecessors, (5980), 0 states have call successors, (0), 0 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 14:59:46,839 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 345 flow. Second operand 12 states and 2496 transitions. [2023-08-30 14:59:46,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 112 transitions, 846 flow [2023-08-30 14:59:46,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 112 transitions, 814 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-30 14:59:46,854 INFO L231 Difference]: Finished difference. Result has 72 places, 54 transitions, 415 flow [2023-08-30 14:59:46,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=415, PETRI_PLACES=72, PETRI_TRANSITIONS=54} [2023-08-30 14:59:46,855 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2023-08-30 14:59:46,855 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 54 transitions, 415 flow [2023-08-30 14:59:46,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 204.23076923076923) internal successors, (2655), 13 states have internal predecessors, (2655), 0 states have call successors, (0), 0 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 14:59:46,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:59:46,856 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-08-30 14:59:46,860 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 14:59:47,060 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,SelfDestructingSolverStorable15 [2023-08-30 14:59:47,060 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 14:59:47,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:59:47,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1799402700, now seen corresponding path program 2 times [2023-08-30 14:59:47,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:59:47,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830394936] [2023-08-30 14:59:47,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:47,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:59:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:47,241 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:59:47,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:59:47,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830394936] [2023-08-30 14:59:47,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830394936] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:59:47,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689182990] [2023-08-30 14:59:47,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:59:47,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:59:47,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:59:47,259 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 14:59:47,260 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 14:59:47,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:59:47,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:59:47,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:59:47,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:59:47,355 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 14:59:47,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:59:47,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689182990] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:59:47,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:59:47,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-08-30 14:59:47,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139455504] [2023-08-30 14:59:47,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:59:47,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:59:47,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:59:47,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:59:47,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-08-30 14:59:47,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 460 [2023-08-30 14:59:47,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 54 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 0 states have call successors, (0), 0 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 14:59:47,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:59:47,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 460 [2023-08-30 14:59:47,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:59:47,690 INFO L130 PetriNetUnfolder]: 1587/2918 cut-off events. [2023-08-30 14:59:47,690 INFO L131 PetriNetUnfolder]: For 2817/2817 co-relation queries the response was YES. [2023-08-30 14:59:47,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9129 conditions, 2918 events. 1587/2918 cut-off events. For 2817/2817 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 16813 event pairs, 1269 based on Foata normal form. 3/2795 useless extension candidates. Maximal degree in co-relation 9099. Up to 2918 conditions per place. [2023-08-30 14:59:47,704 INFO L137 encePairwiseOnDemand]: 458/460 looper letters, 47 selfloop transitions, 1 changer transitions 4/52 dead transitions. [2023-08-30 14:59:47,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 52 transitions, 466 flow [2023-08-30 14:59:47,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:59:47,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:59:47,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 657 transitions. [2023-08-30 14:59:47,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47608695652173916 [2023-08-30 14:59:47,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 657 transitions. [2023-08-30 14:59:47,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 657 transitions. [2023-08-30 14:59:47,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:59:47,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 657 transitions. [2023-08-30 14:59:47,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 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 14:59:47,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 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 14:59:47,709 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 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 14:59:47,709 INFO L175 Difference]: Start difference. First operand has 72 places, 54 transitions, 415 flow. Second operand 3 states and 657 transitions. [2023-08-30 14:59:47,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 52 transitions, 466 flow [2023-08-30 14:59:47,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 52 transitions, 361 flow, removed 6 selfloop flow, removed 17 redundant places. [2023-08-30 14:59:47,718 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 226 flow [2023-08-30 14:59:47,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2023-08-30 14:59:47,718 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2023-08-30 14:59:47,718 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 226 flow [2023-08-30 14:59:47,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 0 states have call successors, (0), 0 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 14:59:47,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:59:47,719 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:59:47,728 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 14:59:47,923 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,SelfDestructingSolverStorable16 [2023-08-30 14:59:47,923 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 14:59:47,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:59:47,924 INFO L85 PathProgramCache]: Analyzing trace with hash 854946249, now seen corresponding path program 2 times [2023-08-30 14:59:47,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:59:47,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479975303] [2023-08-30 14:59:47,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:59:47,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:59:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:59:48,032 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 14:59:48,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:59:48,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479975303] [2023-08-30 14:59:48,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479975303] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:59:48,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378232358] [2023-08-30 14:59:48,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:59:48,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:59:48,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:59:48,049 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 14:59:48,071 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 14:59:48,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:59:48,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:59:48,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:59:48,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:59:48,176 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:59:48,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:59:48,198 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:59:48,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378232358] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:59:48,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:59:48,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 2, 2] total 10 [2023-08-30 14:59:48,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034328283] [2023-08-30 14:59:48,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:59:48,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 14:59:48,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:59:48,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 14:59:48,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-08-30 14:59:48,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 460 [2023-08-30 14:59:48,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 226 flow. Second operand has 11 states, 11 states have (on average 200.27272727272728) internal successors, (2203), 11 states have internal predecessors, (2203), 0 states have call successors, (0), 0 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 14:59:48,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:59:48,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 460 [2023-08-30 14:59:48,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:59:48,887 INFO L130 PetriNetUnfolder]: 2242/3931 cut-off events. [2023-08-30 14:59:48,887 INFO L131 PetriNetUnfolder]: For 1696/1696 co-relation queries the response was YES. [2023-08-30 14:59:48,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10922 conditions, 3931 events. 2242/3931 cut-off events. For 1696/1696 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 24541 event pairs, 414 based on Foata normal form. 126/4057 useless extension candidates. Maximal degree in co-relation 10905. Up to 1224 conditions per place. [2023-08-30 14:59:48,895 INFO L137 encePairwiseOnDemand]: 453/460 looper letters, 0 selfloop transitions, 0 changer transitions 106/106 dead transitions. [2023-08-30 14:59:48,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 106 transitions, 637 flow [2023-08-30 14:59:48,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 14:59:48,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 14:59:48,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2244 transitions. [2023-08-30 14:59:48,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434782608695652 [2023-08-30 14:59:48,899 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2244 transitions. [2023-08-30 14:59:48,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2244 transitions. [2023-08-30 14:59:48,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:59:48,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2244 transitions. [2023-08-30 14:59:48,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 204.0) internal successors, (2244), 11 states have internal predecessors, (2244), 0 states have call successors, (0), 0 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 14:59:48,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 460.0) internal successors, (5520), 12 states have internal predecessors, (5520), 0 states have call successors, (0), 0 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 14:59:48,906 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 460.0) internal successors, (5520), 12 states have internal predecessors, (5520), 0 states have call successors, (0), 0 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 14:59:48,906 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 226 flow. Second operand 11 states and 2244 transitions. [2023-08-30 14:59:48,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 106 transitions, 637 flow [2023-08-30 14:59:48,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 106 transitions, 622 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-30 14:59:48,918 INFO L231 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2023-08-30 14:59:48,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=42, 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=11, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2023-08-30 14:59:48,918 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2023-08-30 14:59:48,919 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2023-08-30 14:59:48,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 200.27272727272728) internal successors, (2203), 11 states have internal predecessors, (2203), 0 states have call successors, (0), 0 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 14:59:48,921 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 22 remaining) [2023-08-30 14:59:48,921 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2023-08-30 14:59:48,921 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2023-08-30 14:59:48,921 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2023-08-30 14:59:48,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2023-08-30 14:59:48,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-08-30 14:59:48,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-30 14:59:48,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-30 14:59:48,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-30 14:59:48,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-30 14:59:48,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-30 14:59:48,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-08-30 14:59:48,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 22 remaining) [2023-08-30 14:59:48,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 22 remaining) [2023-08-30 14:59:48,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-08-30 14:59:48,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-08-30 14:59:48,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-08-30 14:59:48,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-30 14:59:48,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-30 14:59:48,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-08-30 14:59:48,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-30 14:59:48,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-08-30 14:59:48,937 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 14:59:49,128 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,SelfDestructingSolverStorable17 [2023-08-30 14:59:49,129 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:59:49,132 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 14:59:49,132 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 14:59:49,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 02:59:49 BasicIcfg [2023-08-30 14:59:49,134 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 14:59:49,134 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 14:59:49,135 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 14:59:49,135 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 14:59:49,135 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:59:27" (3/4) ... [2023-08-30 14:59:49,136 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 14:59:49,140 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 14:59:49,140 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 14:59:49,144 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2023-08-30 14:59:49,144 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 14:59:49,144 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 14:59:49,144 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 14:59:49,180 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 14:59:49,180 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 14:59:49,181 INFO L158 Benchmark]: Toolchain (without parser) took 22734.97ms. Allocated memory was 88.1MB in the beginning and 3.1GB in the end (delta: 3.0GB). Free memory was 69.0MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 455.5MB. Max. memory is 16.1GB. [2023-08-30 14:59:49,181 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 65.0MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 14:59:49,181 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.61ms. Allocated memory is still 88.1MB. Free memory was 68.7MB in the beginning and 57.1MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 14:59:49,181 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.99ms. Allocated memory is still 88.1MB. Free memory was 57.1MB in the beginning and 55.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 14:59:49,181 INFO L158 Benchmark]: Boogie Preprocessor took 21.15ms. Allocated memory is still 88.1MB. Free memory was 55.0MB in the beginning and 53.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 14:59:49,182 INFO L158 Benchmark]: RCFGBuilder took 447.47ms. Allocated memory is still 88.1MB. Free memory was 53.4MB in the beginning and 56.1MB in the end (delta: -2.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 14:59:49,182 INFO L158 Benchmark]: TraceAbstraction took 22000.86ms. Allocated memory was 88.1MB in the beginning and 3.1GB in the end (delta: 3.0GB). Free memory was 55.3MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2023-08-30 14:59:49,182 INFO L158 Benchmark]: Witness Printer took 45.84ms. Allocated memory is still 3.1GB. Free memory was 2.6GB in the beginning and 2.6GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 14:59:49,183 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 65.0MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 189.61ms. Allocated memory is still 88.1MB. Free memory was 68.7MB in the beginning and 57.1MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.99ms. Allocated memory is still 88.1MB. Free memory was 57.1MB in the beginning and 55.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.15ms. Allocated memory is still 88.1MB. Free memory was 55.0MB in the beginning and 53.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 447.47ms. Allocated memory is still 88.1MB. Free memory was 53.4MB in the beginning and 56.1MB in the end (delta: -2.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 22000.86ms. Allocated memory was 88.1MB in the beginning and 3.1GB in the end (delta: 3.0GB). Free memory was 55.3MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. * Witness Printer took 45.84ms. Allocated memory is still 3.1GB. Free memory was 2.6GB in the beginning and 2.6GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1s, 194 PlacesBefore, 36 PlacesAfterwards, 205 TransitionsBefore, 36 TransitionsAfterwards, 4028 CoEnabledTransitionPairs, 8 FixpointIterations, 110 TrivialSequentialCompositions, 75 ConcurrentSequentialCompositions, 17 TrivialYvCompositions, 12 ConcurrentYvCompositions, 11 ChoiceCompositions, 225 TotalNumberOfCompositions, 5000 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4175, independent: 4076, independent conditional: 0, independent unconditional: 4076, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2251, independent: 2234, independent conditional: 0, independent unconditional: 2234, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4175, independent: 1842, independent conditional: 0, independent unconditional: 1842, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 2251, unknown conditional: 0, unknown unconditional: 2251] , Statistics on independence cache: Total cache size (in pairs): 86, Positive cache size: 79, Positive conditional cache size: 0, Positive unconditional cache size: 79, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 285 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 21.8s, OverallIterations: 18, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 11.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3712 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2899 mSDsluCounter, 1387 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1149 mSDsCounter, 152 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6513 IncrementalHoareTripleChecker+Invalid, 6665 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 152 mSolverCounterUnsat, 238 mSDtfsCounter, 6513 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 210 GetRequests, 93 SyntacticMatches, 4 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=460occurred in iteration=7, InterpolantAutomatonStates: 100, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 231 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 246 ConstructedInterpolants, 0 QuantifiedInterpolants, 849 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1466 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 33 InterpolantComputations, 13 PerfectInterpolantSequences, 122/241 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 14:59:49,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE