./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-chromosome-trans.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-chromosome-trans.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 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b --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 14:44:09,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:44:09,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:44:09,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:44:09,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:44:09,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:44:09,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:44:09,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:44:09,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:44:09,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:44:09,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:44:09,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:44:09,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:44:09,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:44:09,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:44:09,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:44:09,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:44:09,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:44:09,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:44:09,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:44:09,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:44:09,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:44:09,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:44:09,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:44:09,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:44:09,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:44:09,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:44:09,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:44:09,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:44:09,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:44:09,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:44:09,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:44:09,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:44:09,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:44:09,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:44:09,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:44:09,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:44:09,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:44:09,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:44:09,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:44:09,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:44:09,875 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:44:09,915 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:44:09,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:44:09,917 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:44:09,917 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:44:09,918 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:44:09,918 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:44:09,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:44:09,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:44:09,919 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:44:09,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:44:09,920 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:44:09,920 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:44:09,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:44:09,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:44:09,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:44:09,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:44:09,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:44:09,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:44:09,921 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:44:09,921 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:44:09,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:44:09,922 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:44:09,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:44:09,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:44:09,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:44:09,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:44:09,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:44:09,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:44:09,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:44:09,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:44:09,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:44:09,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:44:09,924 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:44:09,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:44:09,924 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:44:09,924 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:44:09,925 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:44:09,925 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:44:10,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:44:10,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:44:10,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:44:10,222 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:44:10,222 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:44:10,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c [2023-08-30 14:44:11,349 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:44:11,568 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:44:11,569 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c [2023-08-30 14:44:11,575 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16b6484c6/2429d8a1a79e485f8ebad0e935fadd45/FLAG06233a78a [2023-08-30 14:44:11,595 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16b6484c6/2429d8a1a79e485f8ebad0e935fadd45 [2023-08-30 14:44:11,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:44:11,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:44:11,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:44:11,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:44:11,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:44:11,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:44:11" (1/1) ... [2023-08-30 14:44:11,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@520a75dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:11, skipping insertion in model container [2023-08-30 14:44:11,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:44:11" (1/1) ... [2023-08-30 14:44:11,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:44:11,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:44:11,849 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-chromosome-trans.wvr.c[3034,3047] [2023-08-30 14:44:11,862 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:44:11,872 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:44:11,911 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-chromosome-trans.wvr.c[3034,3047] [2023-08-30 14:44:11,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:44:11,933 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:44:11,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:11 WrapperNode [2023-08-30 14:44:11,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:44:11,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:44:11,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:44:11,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:44:11,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:11" (1/1) ... [2023-08-30 14:44:11,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:11" (1/1) ... [2023-08-30 14:44:12,005 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 331 [2023-08-30 14:44:12,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:44:12,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:44:12,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:44:12,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:44:12,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:11" (1/1) ... [2023-08-30 14:44:12,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:11" (1/1) ... [2023-08-30 14:44:12,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:11" (1/1) ... [2023-08-30 14:44:12,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:11" (1/1) ... [2023-08-30 14:44:12,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:11" (1/1) ... [2023-08-30 14:44:12,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:11" (1/1) ... [2023-08-30 14:44:12,070 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:11" (1/1) ... [2023-08-30 14:44:12,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:11" (1/1) ... [2023-08-30 14:44:12,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:44:12,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:44:12,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:44:12,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:44:12,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:11" (1/1) ... [2023-08-30 14:44:12,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:44:12,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:44:12,118 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 14:44:12,135 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 14:44:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:44:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:44:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:44:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:44:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 14:44:12,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 14:44:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 14:44:12,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 14:44:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 14:44:12,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 14:44:12,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:44:12,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 14:44:12,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:44:12,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:44:12,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:44:12,164 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 14:44:12,290 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:44:12,292 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:44:12,866 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:44:12,877 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:44:12,878 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 14:44:12,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:44:12 BoogieIcfgContainer [2023-08-30 14:44:12,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:44:12,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:44:12,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:44:12,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:44:12,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:44:11" (1/3) ... [2023-08-30 14:44:12,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0a5805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:44:12, skipping insertion in model container [2023-08-30 14:44:12,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:11" (2/3) ... [2023-08-30 14:44:12,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0a5805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:44:12, skipping insertion in model container [2023-08-30 14:44:12,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:44:12" (3/3) ... [2023-08-30 14:44:12,887 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c [2023-08-30 14:44:12,895 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:44:12,903 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:44:12,904 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-08-30 14:44:12,904 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:44:13,020 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:44:13,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 382 places, 406 transitions, 836 flow [2023-08-30 14:44:13,236 INFO L130 PetriNetUnfolder]: 34/403 cut-off events. [2023-08-30 14:44:13,236 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 14:44:13,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 416 conditions, 403 events. 34/403 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 877 event pairs, 0 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 308. Up to 2 conditions per place. [2023-08-30 14:44:13,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 382 places, 406 transitions, 836 flow [2023-08-30 14:44:13,264 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 362 places, 385 transitions, 785 flow [2023-08-30 14:44:13,268 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:44:13,279 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 362 places, 385 transitions, 785 flow [2023-08-30 14:44:13,283 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 362 places, 385 transitions, 785 flow [2023-08-30 14:44:13,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 362 places, 385 transitions, 785 flow [2023-08-30 14:44:13,364 INFO L130 PetriNetUnfolder]: 33/385 cut-off events. [2023-08-30 14:44:13,365 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 14:44:13,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 385 events. 33/385 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 847 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 308. Up to 2 conditions per place. [2023-08-30 14:44:13,385 INFO L119 LiptonReduction]: Number of co-enabled transitions 35358 [2023-08-30 14:44:33,003 INFO L134 LiptonReduction]: Checked pairs total: 38873 [2023-08-30 14:44:33,004 INFO L136 LiptonReduction]: Total number of compositions: 505 [2023-08-30 14:44:33,016 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:44:33,021 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;@26d21dd8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:44:33,021 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2023-08-30 14:44:33,024 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:44:33,024 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:44:33,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:33,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:44:33,025 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 14:44:33,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:33,029 INFO L85 PathProgramCache]: Analyzing trace with hash 54593, now seen corresponding path program 1 times [2023-08-30 14:44:33,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:33,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637054168] [2023-08-30 14:44:33,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:33,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:33,302 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 14:44:33,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:33,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637054168] [2023-08-30 14:44:33,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637054168] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:44:33,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:44:33,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:44:33,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479982684] [2023-08-30 14:44:33,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:44:33,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:44:33,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:33,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:44:33,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:44:33,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 911 [2023-08-30 14:44:33,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 368.6666666666667) internal successors, (1106), 3 states have internal predecessors, (1106), 0 states have call successors, (0), 0 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 14:44:33,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:33,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 911 [2023-08-30 14:44:33,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:35,392 INFO L130 PetriNetUnfolder]: 9519/13525 cut-off events. [2023-08-30 14:44:35,392 INFO L131 PetriNetUnfolder]: For 618/618 co-relation queries the response was YES. [2023-08-30 14:44:35,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27675 conditions, 13525 events. 9519/13525 cut-off events. For 618/618 co-relation queries the response was YES. Maximal size of possible extension queue 933. Compared 76177 event pairs, 8314 based on Foata normal form. 0/5557 useless extension candidates. Maximal degree in co-relation 12700. Up to 6767 conditions per place. [2023-08-30 14:44:35,465 INFO L137 encePairwiseOnDemand]: 892/911 looper letters, 89 selfloop transitions, 6 changer transitions 0/95 dead transitions. [2023-08-30 14:44:35,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 95 transitions, 410 flow [2023-08-30 14:44:35,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:44:35,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:44:35,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1219 transitions. [2023-08-30 14:44:35,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460300036589828 [2023-08-30 14:44:35,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1219 transitions. [2023-08-30 14:44:35,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1219 transitions. [2023-08-30 14:44:35,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:35,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1219 transitions. [2023-08-30 14:44:35,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 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 14:44:35,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 911.0) internal successors, (3644), 4 states have internal predecessors, (3644), 0 states have call successors, (0), 0 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 14:44:35,499 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 911.0) internal successors, (3644), 4 states have internal predecessors, (3644), 0 states have call successors, (0), 0 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 14:44:35,501 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 131 flow. Second operand 3 states and 1219 transitions. [2023-08-30 14:44:35,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 95 transitions, 410 flow [2023-08-30 14:44:35,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 95 transitions, 392 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 14:44:35,511 INFO L231 Difference]: Finished difference. Result has 54 places, 56 transitions, 164 flow [2023-08-30 14:44:35,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=911, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=54, PETRI_TRANSITIONS=56} [2023-08-30 14:44:35,516 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -8 predicate places. [2023-08-30 14:44:35,516 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 56 transitions, 164 flow [2023-08-30 14:44:35,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 368.6666666666667) internal successors, (1106), 3 states have internal predecessors, (1106), 0 states have call successors, (0), 0 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 14:44:35,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:35,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:44:35,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:44:35,518 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 14:44:35,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:35,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1697066, now seen corresponding path program 1 times [2023-08-30 14:44:35,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:35,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078722207] [2023-08-30 14:44:35,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:35,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:35,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:44:35,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:35,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078722207] [2023-08-30 14:44:35,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078722207] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:44:35,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:44:35,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:44:35,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537767241] [2023-08-30 14:44:35,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:44:35,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:44:35,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:35,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:44:35,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:44:35,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 911 [2023-08-30 14:44:35,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 56 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 369.0) internal successors, (1107), 3 states have internal predecessors, (1107), 0 states have call successors, (0), 0 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 14:44:35,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:35,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 911 [2023-08-30 14:44:35,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:37,333 INFO L130 PetriNetUnfolder]: 9519/13522 cut-off events. [2023-08-30 14:44:37,333 INFO L131 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2023-08-30 14:44:37,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27490 conditions, 13522 events. 9519/13522 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 933. Compared 76169 event pairs, 8314 based on Foata normal form. 0/5563 useless extension candidates. Maximal degree in co-relation 13725. Up to 13522 conditions per place. [2023-08-30 14:44:37,389 INFO L137 encePairwiseOnDemand]: 907/911 looper letters, 52 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-08-30 14:44:37,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 53 transitions, 258 flow [2023-08-30 14:44:37,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:44:37,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:44:37,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1155 transitions. [2023-08-30 14:44:37,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226125137211855 [2023-08-30 14:44:37,393 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1155 transitions. [2023-08-30 14:44:37,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1155 transitions. [2023-08-30 14:44:37,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:37,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1155 transitions. [2023-08-30 14:44:37,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 385.0) internal successors, (1155), 3 states have internal predecessors, (1155), 0 states have call successors, (0), 0 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 14:44:37,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 911.0) internal successors, (3644), 4 states have internal predecessors, (3644), 0 states have call successors, (0), 0 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 14:44:37,403 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 911.0) internal successors, (3644), 4 states have internal predecessors, (3644), 0 states have call successors, (0), 0 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 14:44:37,404 INFO L175 Difference]: Start difference. First operand has 54 places, 56 transitions, 164 flow. Second operand 3 states and 1155 transitions. [2023-08-30 14:44:37,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 53 transitions, 258 flow [2023-08-30 14:44:37,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:44:37,407 INFO L231 Difference]: Finished difference. Result has 51 places, 53 transitions, 142 flow [2023-08-30 14:44:37,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=911, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=51, PETRI_TRANSITIONS=53} [2023-08-30 14:44:37,408 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -11 predicate places. [2023-08-30 14:44:37,408 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 53 transitions, 142 flow [2023-08-30 14:44:37,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 369.0) internal successors, (1107), 3 states have internal predecessors, (1107), 0 states have call successors, (0), 0 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 14:44:37,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:37,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:44:37,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:44:37,410 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 14:44:37,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:37,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1697112, now seen corresponding path program 1 times [2023-08-30 14:44:37,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:37,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118653394] [2023-08-30 14:44:37,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:37,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:37,518 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 14:44:37,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:37,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118653394] [2023-08-30 14:44:37,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118653394] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:44:37,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091553873] [2023-08-30 14:44:37,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:37,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:37,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:44:37,522 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 14:44:37,526 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 14:44:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:37,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:44:37,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:44:37,685 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 14:44:37,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:44:37,698 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 14:44:37,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091553873] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:44:37,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:44:37,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 14:44:37,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035511606] [2023-08-30 14:44:37,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:44:37,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:44:37,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:37,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:44:37,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:44:37,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 911 [2023-08-30 14:44:37,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 53 transitions, 142 flow. Second operand has 7 states, 7 states have (on average 369.14285714285717) internal successors, (2584), 7 states have internal predecessors, (2584), 0 states have call successors, (0), 0 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 14:44:37,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:37,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 911 [2023-08-30 14:44:37,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:41,397 INFO L130 PetriNetUnfolder]: 23796/33799 cut-off events. [2023-08-30 14:44:41,398 INFO L131 PetriNetUnfolder]: For 300/300 co-relation queries the response was YES. [2023-08-30 14:44:41,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68687 conditions, 33799 events. 23796/33799 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 1867. Compared 212863 event pairs, 20785 based on Foata normal form. 0/13896 useless extension candidates. Maximal degree in co-relation 68679. Up to 6765 conditions per place. [2023-08-30 14:44:41,544 INFO L137 encePairwiseOnDemand]: 902/911 looper letters, 203 selfloop transitions, 21 changer transitions 0/224 dead transitions. [2023-08-30 14:44:41,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 224 transitions, 986 flow [2023-08-30 14:44:41,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:44:41,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:44:41,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2441 transitions. [2023-08-30 14:44:41,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44657885107939993 [2023-08-30 14:44:41,550 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2441 transitions. [2023-08-30 14:44:41,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2441 transitions. [2023-08-30 14:44:41,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:41,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2441 transitions. [2023-08-30 14:44:41,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 406.8333333333333) internal successors, (2441), 6 states have internal predecessors, (2441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:41,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 911.0) internal successors, (6377), 7 states have internal predecessors, (6377), 0 states have call successors, (0), 0 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 14:44:41,568 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 911.0) internal successors, (6377), 7 states have internal predecessors, (6377), 0 states have call successors, (0), 0 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 14:44:41,568 INFO L175 Difference]: Start difference. First operand has 51 places, 53 transitions, 142 flow. Second operand 6 states and 2441 transitions. [2023-08-30 14:44:41,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 224 transitions, 986 flow [2023-08-30 14:44:41,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 224 transitions, 985 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:44:41,572 INFO L231 Difference]: Finished difference. Result has 58 places, 68 transitions, 291 flow [2023-08-30 14:44:41,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=911, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=291, PETRI_PLACES=58, PETRI_TRANSITIONS=68} [2023-08-30 14:44:41,573 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2023-08-30 14:44:41,573 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 68 transitions, 291 flow [2023-08-30 14:44:41,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 369.14285714285717) internal successors, (2584), 7 states have internal predecessors, (2584), 0 states have call successors, (0), 0 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 14:44:41,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:41,575 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 14:44:41,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 14:44:41,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:41,781 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 14:44:41,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:41,781 INFO L85 PathProgramCache]: Analyzing trace with hash -977664081, now seen corresponding path program 2 times [2023-08-30 14:44:41,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:41,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414963923] [2023-08-30 14:44:41,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:41,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:41,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:41,924 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 14:44:41,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:41,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414963923] [2023-08-30 14:44:41,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414963923] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:44:41,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200776560] [2023-08-30 14:44:41,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:44:41,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:41,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:44:41,930 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 14:44:41,958 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 14:44:42,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:44:42,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:44:42,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:44:42,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:44:42,050 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 14:44:42,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:44:42,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200776560] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:44:42,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:44:42,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 14:44:42,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751962722] [2023-08-30 14:44:42,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:44:42,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:44:42,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:42,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:44:42,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 14:44:42,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 371 out of 911 [2023-08-30 14:44:42,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 68 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 372.0) internal successors, (1116), 3 states have internal predecessors, (1116), 0 states have call successors, (0), 0 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 14:44:42,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:42,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 371 of 911 [2023-08-30 14:44:42,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:45,258 INFO L130 PetriNetUnfolder]: 23796/33796 cut-off events. [2023-08-30 14:44:45,259 INFO L131 PetriNetUnfolder]: For 305/305 co-relation queries the response was YES. [2023-08-30 14:44:45,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68720 conditions, 33796 events. 23796/33796 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 1867. Compared 212947 event pairs, 20785 based on Foata normal form. 3/13905 useless extension candidates. Maximal degree in co-relation 68708. Up to 33796 conditions per place. [2023-08-30 14:44:45,441 INFO L137 encePairwiseOnDemand]: 907/911 looper letters, 64 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2023-08-30 14:44:45,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 391 flow [2023-08-30 14:44:45,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:44:45,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:44:45,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1161 transitions. [2023-08-30 14:44:45,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424807903402854 [2023-08-30 14:44:45,449 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1161 transitions. [2023-08-30 14:44:45,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1161 transitions. [2023-08-30 14:44:45,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:45,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1161 transitions. [2023-08-30 14:44:45,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 387.0) internal successors, (1161), 3 states have internal predecessors, (1161), 0 states have call successors, (0), 0 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 14:44:45,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 911.0) internal successors, (3644), 4 states have internal predecessors, (3644), 0 states have call successors, (0), 0 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 14:44:45,460 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 911.0) internal successors, (3644), 4 states have internal predecessors, (3644), 0 states have call successors, (0), 0 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 14:44:45,460 INFO L175 Difference]: Start difference. First operand has 58 places, 68 transitions, 291 flow. Second operand 3 states and 1161 transitions. [2023-08-30 14:44:45,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 391 flow [2023-08-30 14:44:45,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 65 transitions, 319 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-08-30 14:44:45,464 INFO L231 Difference]: Finished difference. Result has 52 places, 65 transitions, 191 flow [2023-08-30 14:44:45,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=911, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=52, PETRI_TRANSITIONS=65} [2023-08-30 14:44:45,465 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -10 predicate places. [2023-08-30 14:44:45,466 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 65 transitions, 191 flow [2023-08-30 14:44:45,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 372.0) internal successors, (1116), 3 states have internal predecessors, (1116), 0 states have call successors, (0), 0 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 14:44:45,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:45,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:44:45,474 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 14:44:45,672 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,SelfDestructingSolverStorable3 [2023-08-30 14:44:45,672 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 14:44:45,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:45,673 INFO L85 PathProgramCache]: Analyzing trace with hash -190078744, now seen corresponding path program 1 times [2023-08-30 14:44:45,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:45,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089504779] [2023-08-30 14:44:45,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:45,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:45,750 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 14:44:45,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:45,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089504779] [2023-08-30 14:44:45,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089504779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:44:45,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:44:45,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:44:45,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625957976] [2023-08-30 14:44:45,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:44:45,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:44:45,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:45,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:44:45,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:44:45,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 911 [2023-08-30 14:44:45,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 65 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 367.6666666666667) internal successors, (1103), 3 states have internal predecessors, (1103), 0 states have call successors, (0), 0 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 14:44:45,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:45,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 911 [2023-08-30 14:44:45,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:48,073 INFO L130 PetriNetUnfolder]: 19037/27040 cut-off events. [2023-08-30 14:44:48,074 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2023-08-30 14:44:48,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54954 conditions, 27040 events. 19037/27040 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1595. Compared 166329 event pairs, 16628 based on Foata normal form. 1/11121 useless extension candidates. Maximal degree in co-relation 54945. Up to 27032 conditions per place. [2023-08-30 14:44:48,214 INFO L137 encePairwiseOnDemand]: 904/911 looper letters, 51 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2023-08-30 14:44:48,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 309 flow [2023-08-30 14:44:48,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:44:48,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:44:48,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1146 transitions. [2023-08-30 14:44:48,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41931942919868276 [2023-08-30 14:44:48,219 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1146 transitions. [2023-08-30 14:44:48,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1146 transitions. [2023-08-30 14:44:48,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:48,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1146 transitions. [2023-08-30 14:44:48,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 382.0) internal successors, (1146), 3 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 14:44:48,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 911.0) internal successors, (3644), 4 states have internal predecessors, (3644), 0 states have call successors, (0), 0 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 14:44:48,228 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 911.0) internal successors, (3644), 4 states have internal predecessors, (3644), 0 states have call successors, (0), 0 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 14:44:48,228 INFO L175 Difference]: Start difference. First operand has 52 places, 65 transitions, 191 flow. Second operand 3 states and 1146 transitions. [2023-08-30 14:44:48,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 309 flow [2023-08-30 14:44:48,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:44:48,230 INFO L231 Difference]: Finished difference. Result has 54 places, 63 transitions, 220 flow [2023-08-30 14:44:48,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=911, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=54, PETRI_TRANSITIONS=63} [2023-08-30 14:44:48,231 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -8 predicate places. [2023-08-30 14:44:48,231 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 63 transitions, 220 flow [2023-08-30 14:44:48,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 367.6666666666667) internal successors, (1103), 3 states have internal predecessors, (1103), 0 states have call successors, (0), 0 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 14:44:48,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:48,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:44:48,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:44:48,233 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 14:44:48,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:48,233 INFO L85 PathProgramCache]: Analyzing trace with hash -71077675, now seen corresponding path program 1 times [2023-08-30 14:44:48,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:48,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21715726] [2023-08-30 14:44:48,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:48,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:48,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:44:48,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:48,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21715726] [2023-08-30 14:44:48,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21715726] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:44:48,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025751565] [2023-08-30 14:44:48,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:48,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:48,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:44:48,301 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 14:44:48,320 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 14:44:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:48,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:44:48,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:44:48,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:44:48,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:44:48,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:44:48,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025751565] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:44:48,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:44:48,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-30 14:44:48,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379442427] [2023-08-30 14:44:48,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:44:48,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 14:44:48,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:48,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 14:44:48,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-08-30 14:44:48,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 359 out of 911 [2023-08-30 14:44:48,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 63 transitions, 220 flow. Second operand has 8 states, 8 states have (on average 361.125) internal successors, (2889), 8 states have internal predecessors, (2889), 0 states have call successors, (0), 0 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 14:44:48,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:48,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 359 of 911 [2023-08-30 14:44:48,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:49,255 INFO L130 PetriNetUnfolder]: 4760/6772 cut-off events. [2023-08-30 14:44:49,256 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2023-08-30 14:44:49,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13790 conditions, 6772 events. 4760/6772 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 34253 event pairs, 4157 based on Foata normal form. 9/2803 useless extension candidates. Maximal degree in co-relation 13779. Up to 6761 conditions per place. [2023-08-30 14:44:49,278 INFO L137 encePairwiseOnDemand]: 904/911 looper letters, 42 selfloop transitions, 15 changer transitions 0/57 dead transitions. [2023-08-30 14:44:49,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 292 flow [2023-08-30 14:44:49,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:44:49,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:44:49,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2220 transitions. [2023-08-30 14:44:49,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4061470911086718 [2023-08-30 14:44:49,284 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2220 transitions. [2023-08-30 14:44:49,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2220 transitions. [2023-08-30 14:44:49,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:49,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2220 transitions. [2023-08-30 14:44:49,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 370.0) internal successors, (2220), 6 states have internal predecessors, (2220), 0 states have call successors, (0), 0 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 14:44:49,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 911.0) internal successors, (6377), 7 states have internal predecessors, (6377), 0 states have call successors, (0), 0 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 14:44:49,297 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 911.0) internal successors, (6377), 7 states have internal predecessors, (6377), 0 states have call successors, (0), 0 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 14:44:49,298 INFO L175 Difference]: Start difference. First operand has 54 places, 63 transitions, 220 flow. Second operand 6 states and 2220 transitions. [2023-08-30 14:44:49,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 292 flow [2023-08-30 14:44:49,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:44:49,300 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 220 flow [2023-08-30 14:44:49,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=911, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2023-08-30 14:44:49,300 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -2 predicate places. [2023-08-30 14:44:49,301 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 220 flow [2023-08-30 14:44:49,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 361.125) internal successors, (2889), 8 states have internal predecessors, (2889), 0 states have call successors, (0), 0 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 14:44:49,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:49,302 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:44:49,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 14:44:49,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:49,507 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 14:44:49,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:49,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1560603048, now seen corresponding path program 2 times [2023-08-30 14:44:49,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:49,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651454689] [2023-08-30 14:44:49,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:49,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:49,665 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-30 14:44:49,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:49,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651454689] [2023-08-30 14:44:49,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651454689] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:44:49,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555998750] [2023-08-30 14:44:49,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:44:49,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:49,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:44:49,668 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 14:44:49,670 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 14:44:49,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 14:44:49,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:44:49,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 14:44:49,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:44:49,866 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-30 14:44:49,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:44:49,900 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-30 14:44:49,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555998750] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:44:49,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:44:49,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 14:44:49,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43910056] [2023-08-30 14:44:49,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:44:49,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:44:49,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:49,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:44:49,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:44:50,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 359 out of 911 [2023-08-30 14:44:50,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 220 flow. Second operand has 13 states, 13 states have (on average 360.6923076923077) internal successors, (4689), 13 states have internal predecessors, (4689), 0 states have call successors, (0), 0 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 14:44:50,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:50,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 359 of 911 [2023-08-30 14:44:50,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:50,915 INFO L130 PetriNetUnfolder]: 4760/6775 cut-off events. [2023-08-30 14:44:50,915 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2023-08-30 14:44:50,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13823 conditions, 6775 events. 4760/6775 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 34253 event pairs, 4157 based on Foata normal form. 3/2800 useless extension candidates. Maximal degree in co-relation 13809. Up to 6761 conditions per place. [2023-08-30 14:44:50,937 INFO L137 encePairwiseOnDemand]: 904/911 looper letters, 42 selfloop transitions, 18 changer transitions 0/60 dead transitions. [2023-08-30 14:44:50,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 60 transitions, 352 flow [2023-08-30 14:44:50,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:44:50,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:44:50,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2576 transitions. [2023-08-30 14:44:50,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4039517014270033 [2023-08-30 14:44:50,944 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2576 transitions. [2023-08-30 14:44:50,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2576 transitions. [2023-08-30 14:44:50,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:50,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2576 transitions. [2023-08-30 14:44:50,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 368.0) internal successors, (2576), 7 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 14:44:50,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 911.0) internal successors, (7288), 8 states have internal predecessors, (7288), 0 states have call successors, (0), 0 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 14:44:50,959 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 911.0) internal successors, (7288), 8 states have internal predecessors, (7288), 0 states have call successors, (0), 0 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 14:44:50,959 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 220 flow. Second operand 7 states and 2576 transitions. [2023-08-30 14:44:50,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 60 transitions, 352 flow [2023-08-30 14:44:50,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 322 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 14:44:50,961 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 252 flow [2023-08-30 14:44:50,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=911, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=252, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2023-08-30 14:44:50,962 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 0 predicate places. [2023-08-30 14:44:50,962 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 252 flow [2023-08-30 14:44:50,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 360.6923076923077) internal successors, (4689), 13 states have internal predecessors, (4689), 0 states have call successors, (0), 0 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 14:44:50,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:50,964 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:44:50,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 14:44:51,169 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 14:44:51,169 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 14:44:51,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:51,170 INFO L85 PathProgramCache]: Analyzing trace with hash -735559148, now seen corresponding path program 1 times [2023-08-30 14:44:51,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:51,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877167148] [2023-08-30 14:44:51,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:51,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 14:44:51,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:51,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877167148] [2023-08-30 14:44:51,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877167148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:44:51,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:44:51,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:44:51,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689000954] [2023-08-30 14:44:51,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:44:51,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:44:51,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:51,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:44:51,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:44:51,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 375 out of 911 [2023-08-30 14:44:51,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 378.6666666666667) internal successors, (1136), 3 states have internal predecessors, (1136), 0 states have call successors, (0), 0 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 14:44:51,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:51,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 375 of 911 [2023-08-30 14:44:51,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:52,376 INFO L130 PetriNetUnfolder]: 8190/11655 cut-off events. [2023-08-30 14:44:52,376 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2023-08-30 14:44:52,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23741 conditions, 11655 events. 8190/11655 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 66844 event pairs, 4157 based on Foata normal form. 0/4801 useless extension candidates. Maximal degree in co-relation 23726. Up to 6776 conditions per place. [2023-08-30 14:44:52,416 INFO L137 encePairwiseOnDemand]: 907/911 looper letters, 92 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2023-08-30 14:44:52,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 94 transitions, 513 flow [2023-08-30 14:44:52,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:44:52,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:44:52,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1206 transitions. [2023-08-30 14:44:52,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44127332601536773 [2023-08-30 14:44:52,420 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1206 transitions. [2023-08-30 14:44:52,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1206 transitions. [2023-08-30 14:44:52,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:52,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1206 transitions. [2023-08-30 14:44:52,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 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 14:44:52,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 911.0) internal successors, (3644), 4 states have internal predecessors, (3644), 0 states have call successors, (0), 0 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 14:44:52,430 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 911.0) internal successors, (3644), 4 states have internal predecessors, (3644), 0 states have call successors, (0), 0 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 14:44:52,430 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 252 flow. Second operand 3 states and 1206 transitions. [2023-08-30 14:44:52,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 94 transitions, 513 flow [2023-08-30 14:44:52,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 94 transitions, 483 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-30 14:44:52,433 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 236 flow [2023-08-30 14:44:52,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=911, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2023-08-30 14:44:52,436 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -1 predicate places. [2023-08-30 14:44:52,436 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 236 flow [2023-08-30 14:44:52,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 378.6666666666667) internal successors, (1136), 3 states have internal predecessors, (1136), 0 states have call successors, (0), 0 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 14:44:52,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:52,437 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:44:52,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:44:52,437 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 14:44:52,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:52,438 INFO L85 PathProgramCache]: Analyzing trace with hash -735559147, now seen corresponding path program 3 times [2023-08-30 14:44:52,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:52,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497548182] [2023-08-30 14:44:52,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:52,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:53,545 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-30 14:44:53,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:53,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497548182] [2023-08-30 14:44:53,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497548182] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:44:53,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533168614] [2023-08-30 14:44:53,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 14:44:53,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:53,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:44:53,547 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 14:44:53,549 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 14:44:53,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-30 14:44:53,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:44:53,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-30 14:44:53,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:44:53,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 14:44:53,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 14:44:53,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:44:53,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-30 14:44:54,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:44:54,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-30 14:44:54,057 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-30 14:44:54,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 26 [2023-08-30 14:44:54,127 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-30 14:44:54,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 30 [2023-08-30 14:44:54,184 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:44:54,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:44:54,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:44:54,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:44:54,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:44:54,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:44:54,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:44:54,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:44:54,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:44:54,306 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-30 14:44:54,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:45:14,939 INFO L321 Elim1Store]: treesize reduction 212, result has 30.5 percent of original size [2023-08-30 14:45:14,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 55 treesize of output 108 [2023-08-30 14:45:15,033 INFO L321 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2023-08-30 14:45:15,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 210 treesize of output 226 [2023-08-30 14:45:15,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-08-30 14:45:15,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-08-30 14:45:15,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-08-30 14:45:15,351 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-30 14:45:15,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533168614] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:45:15,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:45:15,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-30 14:45:15,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281555238] [2023-08-30 14:45:15,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:45:15,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 14:45:15,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:45:15,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 14:45:15,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=807, Unknown=12, NotChecked=0, Total=992 [2023-08-30 14:45:17,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:19,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:21,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:24,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:26,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:28,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:30,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:32,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:34,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:36,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:38,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:40,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:42,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:44,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:46,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:48,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:50,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:52,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:54,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:56,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:58,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:46:00,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:46:02,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:46:04,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:46:06,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:46:08,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:46:10,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:46:10,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 911 [2023-08-30 14:46:10,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 236 flow. Second operand has 32 states, 32 states have (on average 306.3125) internal successors, (9802), 32 states have internal predecessors, (9802), 0 states have call successors, (0), 0 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 14:46:10,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:46:10,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 911 [2023-08-30 14:46:10,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:46:13,235 INFO L130 PetriNetUnfolder]: 10269/15181 cut-off events. [2023-08-30 14:46:13,236 INFO L131 PetriNetUnfolder]: For 1032/1032 co-relation queries the response was YES. [2023-08-30 14:46:13,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32040 conditions, 15181 events. 10269/15181 cut-off events. For 1032/1032 co-relation queries the response was YES. Maximal size of possible extension queue 1077. Compared 97169 event pairs, 5107 based on Foata normal form. 0/6724 useless extension candidates. Maximal degree in co-relation 32024. Up to 10246 conditions per place. [2023-08-30 14:46:13,332 INFO L137 encePairwiseOnDemand]: 895/911 looper letters, 76 selfloop transitions, 25 changer transitions 0/101 dead transitions. [2023-08-30 14:46:13,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 101 transitions, 533 flow [2023-08-30 14:46:13,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:46:13,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:46:13,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3752 transitions. [2023-08-30 14:46:13,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34321258690084155 [2023-08-30 14:46:13,342 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3752 transitions. [2023-08-30 14:46:13,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3752 transitions. [2023-08-30 14:46:13,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:46:13,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3752 transitions. [2023-08-30 14:46:13,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 312.6666666666667) internal successors, (3752), 12 states have internal predecessors, (3752), 0 states have call successors, (0), 0 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 14:46:13,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 911.0) internal successors, (11843), 13 states have internal predecessors, (11843), 0 states have call successors, (0), 0 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 14:46:13,363 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 911.0) internal successors, (11843), 13 states have internal predecessors, (11843), 0 states have call successors, (0), 0 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 14:46:13,363 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 236 flow. Second operand 12 states and 3752 transitions. [2023-08-30 14:46:13,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 101 transitions, 533 flow [2023-08-30 14:46:13,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 101 transitions, 529 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:46:13,367 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 350 flow [2023-08-30 14:46:13,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=911, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=350, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2023-08-30 14:46:13,368 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 12 predicate places. [2023-08-30 14:46:13,368 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 350 flow [2023-08-30 14:46:13,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 306.3125) internal successors, (9802), 32 states have internal predecessors, (9802), 0 states have call successors, (0), 0 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 14:46:13,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:46:13,371 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:46:13,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 14:46:13,576 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 14:46:13,576 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 14:46:13,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:46:13,577 INFO L85 PathProgramCache]: Analyzing trace with hash -735559151, now seen corresponding path program 1 times [2023-08-30 14:46:13,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:46:13,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682849077] [2023-08-30 14:46:13,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:46:13,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:46:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:46:15,200 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 14:46:15,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:46:15,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682849077] [2023-08-30 14:46:15,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682849077] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:46:15,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149809181] [2023-08-30 14:46:15,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:46:15,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:46:15,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:46:15,202 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 14:46:15,204 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 14:46:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:46:15,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-30 14:46:15,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:46:15,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:46:15,431 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-08-30 14:46:15,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 39 [2023-08-30 14:46:15,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 14:46:15,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:46:15,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-30 14:46:15,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:46:15,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-30 14:46:15,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:46:15,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-30 14:46:15,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:46:15,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-30 14:46:15,722 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 14:46:15,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 14:46:15,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:46:15,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:46:15,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:46:15,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:46:15,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:46:15,897 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:46:15,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:46:15,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:46:15,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:46:15,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:46:15,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:46:16,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:46:16,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:46:16,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:46:16,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-08-30 14:46:16,084 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-30 14:46:16,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:46:16,163 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_571 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_571) c_~o_0~0.base) c_~o_0~0.offset)))) is different from false [2023-08-30 14:46:33,165 INFO L321 Elim1Store]: treesize reduction 244, result has 20.0 percent of original size [2023-08-30 14:46:33,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 58 treesize of output 79 [2023-08-30 14:46:33,181 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:46:33,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 137 [2023-08-30 14:46:33,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 116 [2023-08-30 14:46:33,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 112 [2023-08-30 14:46:33,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 54 [2023-08-30 14:46:33,423 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 16 refuted. 2 times theorem prover too weak. 20 trivial. 5 not checked. [2023-08-30 14:46:33,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149809181] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:46:33,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:46:33,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 37 [2023-08-30 14:46:33,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079643523] [2023-08-30 14:46:33,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:46:33,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-30 14:46:33,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:46:33,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-30 14:46:33,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1206, Unknown=23, NotChecked=72, Total=1482 [2023-08-30 14:46:33,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 911 [2023-08-30 14:46:33,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 350 flow. Second operand has 39 states, 39 states have (on average 305.2564102564103) internal successors, (11905), 39 states have internal predecessors, (11905), 0 states have call successors, (0), 0 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 14:46:33,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:46:33,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 911 [2023-08-30 14:46:33,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:46:37,040 INFO L130 PetriNetUnfolder]: 12522/18486 cut-off events. [2023-08-30 14:46:37,040 INFO L131 PetriNetUnfolder]: For 5381/5381 co-relation queries the response was YES. [2023-08-30 14:46:37,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42102 conditions, 18486 events. 12522/18486 cut-off events. For 5381/5381 co-relation queries the response was YES. Maximal size of possible extension queue 1370. Compared 118793 event pairs, 9197 based on Foata normal form. 0/8939 useless extension candidates. Maximal degree in co-relation 42082. Up to 13151 conditions per place. [2023-08-30 14:46:37,124 INFO L137 encePairwiseOnDemand]: 899/911 looper letters, 110 selfloop transitions, 21 changer transitions 0/131 dead transitions. [2023-08-30 14:46:37,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 131 transitions, 761 flow [2023-08-30 14:46:37,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 14:46:37,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 14:46:37,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4680 transitions. [2023-08-30 14:46:37,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424807903402854 [2023-08-30 14:46:37,134 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4680 transitions. [2023-08-30 14:46:37,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4680 transitions. [2023-08-30 14:46:37,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:46:37,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4680 transitions. [2023-08-30 14:46:37,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 312.0) internal successors, (4680), 15 states have internal predecessors, (4680), 0 states have call successors, (0), 0 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 14:46:37,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 911.0) internal successors, (14576), 16 states have internal predecessors, (14576), 0 states have call successors, (0), 0 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 14:46:37,157 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 911.0) internal successors, (14576), 16 states have internal predecessors, (14576), 0 states have call successors, (0), 0 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 14:46:37,158 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 350 flow. Second operand 15 states and 4680 transitions. [2023-08-30 14:46:37,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 131 transitions, 761 flow [2023-08-30 14:46:37,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 131 transitions, 744 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 14:46:37,164 INFO L231 Difference]: Finished difference. Result has 88 places, 78 transitions, 412 flow [2023-08-30 14:46:37,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=911, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=412, PETRI_PLACES=88, PETRI_TRANSITIONS=78} [2023-08-30 14:46:37,165 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 26 predicate places. [2023-08-30 14:46:37,165 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 78 transitions, 412 flow [2023-08-30 14:46:37,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 305.2564102564103) internal successors, (11905), 39 states have internal predecessors, (11905), 0 states have call successors, (0), 0 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 14:46:37,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:46:37,167 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:46:37,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 14:46:37,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:46:37,374 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 14:46:37,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:46:37,374 INFO L85 PathProgramCache]: Analyzing trace with hash -735559152, now seen corresponding path program 1 times [2023-08-30 14:46:37,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:46:37,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426424124] [2023-08-30 14:46:37,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:46:37,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:46:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:46:38,479 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-30 14:46:38,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:46:38,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426424124] [2023-08-30 14:46:38,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426424124] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:46:38,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016742642] [2023-08-30 14:46:38,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:46:38,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:46:38,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:46:38,481 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 14:46:38,488 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 14:46:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:46:38,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 73 conjunts are in the unsatisfiable core [2023-08-30 14:46:38,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:46:38,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:46:38,720 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-08-30 14:46:38,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 39 [2023-08-30 14:46:38,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 14:46:38,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 14:46:38,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 14:46:38,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 14:46:38,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 14:46:38,972 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 14:46:38,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 14:46:39,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:46:39,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:46:39,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:46:39,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:46:39,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:46:39,276 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:46:39,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:46:39,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:46:39,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:46:39,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:46:39,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:46:39,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:46:39,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:46:39,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:46:39,529 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:46:39,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:46:39,898 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_697 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_697))) (let ((.cse0 (select (select .cse1 ~o_2~0.base) c_~o_2~0.offset))) (or (< .cse0 0) (< 0 .cse0) (< (select (select .cse1 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse0 2147483648)))))) (forall ((v_ArrVal_697 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_697))) (let ((.cse2 (select (select .cse3 ~o_2~0.base) c_~o_2~0.offset))) (or (< 9223372039002259455 .cse2) (<= .cse2 0) (< (select (select .cse3 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse2 2147483648))))))) is different from false [2023-08-30 14:46:39,930 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_696 (Array Int Int)) (v_ArrVal_697 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_696) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_697))) (let ((.cse0 (select (select .cse1 ~o_2~0.base) c_~o_2~0.offset))) (or (< 0 .cse0) (< .cse0 0) (< (select (select .cse1 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse0 2147483648)))))) (forall ((v_ArrVal_696 (Array Int Int)) (v_ArrVal_697 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_696) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_697))) (let ((.cse2 (select (select .cse3 ~o_2~0.base) c_~o_2~0.offset))) (or (<= .cse2 0) (< (select (select .cse3 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse2 2147483648)) (< 9223372039002259455 .cse2)))))) is different from false [2023-08-30 14:47:17,708 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:47:17,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 511 treesize of output 297 [2023-08-30 14:47:17,871 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:47:17,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 24257 treesize of output 23885 [2023-08-30 14:47:18,846 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:47:18,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4279 treesize of output 4216 [2023-08-30 14:47:18,987 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:47:18,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4207 treesize of output 4072 [2023-08-30 14:47:19,125 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:47:19,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4063 treesize of output 3784 [2023-08-30 14:47:19,293 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:47:19,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3837 treesize of output 3793 [2023-08-30 14:47:19,425 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:47:19,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3723 treesize of output 3588 [2023-08-30 14:47:19,564 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:47:19,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3579 treesize of output 3552 [2023-08-30 14:47:19,699 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:47:19,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3543 treesize of output 3480 Killed by 15