./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum.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 c328ca6a6071aea6db12d1e311bd2e5e22fce6c700c884e61df52925e139f834 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:14:56,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:14:56,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:14:56,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:14:56,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:14:56,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:14:56,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:14:56,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:14:56,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:14:56,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:14:56,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:14:56,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:14:56,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:14:56,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:14:56,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:14:56,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:14:56,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:14:56,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:14:56,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:14:56,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:14:56,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:14:56,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:14:56,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:14:56,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:14:56,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:14:56,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:14:56,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:14:56,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:14:56,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:14:56,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:14:56,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:14:56,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:14:56,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:14:56,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:14:56,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:14:56,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:14:56,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:14:56,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:14:56,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:14:56,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:14:56,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:14:56,905 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:14:56,931 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:14:56,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:14:56,933 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:14:56,934 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:14:56,934 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:14:56,935 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:14:56,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:14:56,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:14:56,936 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:14:56,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:14:56,937 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:14:56,937 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:14:56,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:14:56,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:14:56,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:14:56,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:14:56,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:14:56,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:14:56,938 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:14:56,938 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:14:56,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:14:56,939 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:14:56,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:14:56,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:14:56,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:14:56,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:14:56,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:14:56,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:14:56,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:14:56,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:14:56,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:14:56,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:14:56,941 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:14:56,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:14:56,942 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:14:56,942 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:14:56,942 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:14:56,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c328ca6a6071aea6db12d1e311bd2e5e22fce6c700c884e61df52925e139f834 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:14:57,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:14:57,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:14:57,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:14:57,321 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:14:57,322 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:14:57,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c [2023-09-01 08:14:58,445 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:14:58,650 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:14:58,651 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c [2023-09-01 08:14:58,658 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ba9727c6/d8ebb564f64d44a2a421cd414662fb51/FLAG2d805d7d2 [2023-09-01 08:14:58,671 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ba9727c6/d8ebb564f64d44a2a421cd414662fb51 [2023-09-01 08:14:58,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:14:58,676 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:14:58,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:14:58,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:14:58,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:14:58,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:14:58" (1/1) ... [2023-09-01 08:14:58,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50058d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:14:58, skipping insertion in model container [2023-09-01 08:14:58,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:14:58" (1/1) ... [2023-09-01 08:14:58,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:14:58,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:14:58,876 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c[2835,2848] [2023-09-01 08:14:58,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:14:58,901 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:14:58,940 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c[2835,2848] [2023-09-01 08:14:58,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:14:58,971 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:14:58,971 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:14:58,977 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:14:58,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:14:58 WrapperNode [2023-09-01 08:14:58,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:14:58,980 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:14:58,980 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:14:58,980 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:14:58,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:14:58" (1/1) ... [2023-09-01 08:14:59,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:14:58" (1/1) ... [2023-09-01 08:14:59,050 INFO L138 Inliner]: procedures = 25, calls = 58, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 378 [2023-09-01 08:14:59,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:14:59,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:14:59,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:14:59,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:14:59,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:14:58" (1/1) ... [2023-09-01 08:14:59,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:14:58" (1/1) ... [2023-09-01 08:14:59,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:14:58" (1/1) ... [2023-09-01 08:14:59,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:14:58" (1/1) ... [2023-09-01 08:14:59,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:14:58" (1/1) ... [2023-09-01 08:14:59,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:14:58" (1/1) ... [2023-09-01 08:14:59,112 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:14:58" (1/1) ... [2023-09-01 08:14:59,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:14:58" (1/1) ... [2023-09-01 08:14:59,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:14:59,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:14:59,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:14:59,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:14:59,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:14:58" (1/1) ... [2023-09-01 08:14:59,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:14:59,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:14:59,162 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 08:14:59,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 08:14:59,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:14:59,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:14:59,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:14:59,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:14:59,200 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:14:59,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:14:59,200 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:14:59,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:14:59,200 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:14:59,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:14:59,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:14:59,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:14:59,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:14:59,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:14:59,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:14:59,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:14:59,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:14:59,211 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:14:59,381 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:14:59,383 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:14:59,949 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:15:01,274 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:15:01,274 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-09-01 08:15:01,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:15:01 BoogieIcfgContainer [2023-09-01 08:15:01,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:15:01,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:15:01,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:15:01,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:15:01,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:14:58" (1/3) ... [2023-09-01 08:15:01,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e254dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:15:01, skipping insertion in model container [2023-09-01 08:15:01,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:14:58" (2/3) ... [2023-09-01 08:15:01,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e254dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:15:01, skipping insertion in model container [2023-09-01 08:15:01,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:15:01" (3/3) ... [2023-09-01 08:15:01,284 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2023-09-01 08:15:01,293 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:15:01,301 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:15:01,302 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2023-09-01 08:15:01,302 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:15:01,694 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 08:15:01,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 237 transitions, 498 flow [2023-09-01 08:15:01,836 INFO L130 PetriNetUnfolder]: 16/234 cut-off events. [2023-09-01 08:15:01,836 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:15:01,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 234 events. 16/234 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 406 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 183. Up to 2 conditions per place. [2023-09-01 08:15:01,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 237 transitions, 498 flow [2023-09-01 08:15:01,848 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 216 transitions, 447 flow [2023-09-01 08:15:01,851 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:15:01,859 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 216 transitions, 447 flow [2023-09-01 08:15:01,861 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 216 transitions, 447 flow [2023-09-01 08:15:01,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 216 transitions, 447 flow [2023-09-01 08:15:01,964 INFO L130 PetriNetUnfolder]: 15/216 cut-off events. [2023-09-01 08:15:01,964 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:15:01,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 216 events. 15/216 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 418 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 183. Up to 2 conditions per place. [2023-09-01 08:15:01,970 INFO L119 LiptonReduction]: Number of co-enabled transitions 6318 [2023-09-01 08:15:34,582 INFO L134 LiptonReduction]: Checked pairs total: 11584 [2023-09-01 08:15:34,582 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-09-01 08:15:34,596 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:15:34,602 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;@737f5e3b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:15:34,602 INFO L358 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2023-09-01 08:15:34,605 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:15:34,605 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:15:34,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:15:34,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:15:34,607 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-09-01 08:15:34,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:15:34,611 INFO L85 PathProgramCache]: Analyzing trace with hash 53614, now seen corresponding path program 1 times [2023-09-01 08:15:34,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:15:34,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547015044] [2023-09-01 08:15:34,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:15:34,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:15:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:15:35,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:15:35,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:15:35,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547015044] [2023-09-01 08:15:35,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547015044] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:15:35,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:15:35,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:15:35,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076313941] [2023-09-01 08:15:35,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:15:35,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:15:35,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:15:35,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:15:35,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:15:35,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 467 [2023-09-01 08:15:35,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:35,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:15:35,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 467 [2023-09-01 08:15:35,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:15:42,099 INFO L130 PetriNetUnfolder]: 29793/37335 cut-off events. [2023-09-01 08:15:42,100 INFO L131 PetriNetUnfolder]: For 524/524 co-relation queries the response was YES. [2023-09-01 08:15:42,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75342 conditions, 37335 events. 29793/37335 cut-off events. For 524/524 co-relation queries the response was YES. Maximal size of possible extension queue 3753. Compared 203667 event pairs, 15651 based on Foata normal form. 0/8790 useless extension candidates. Maximal degree in co-relation 34990. Up to 18564 conditions per place. [2023-09-01 08:15:42,341 INFO L137 encePairwiseOnDemand]: 441/467 looper letters, 93 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2023-09-01 08:15:42,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 100 transitions, 424 flow [2023-09-01 08:15:42,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:15:42,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:15:42,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 659 transitions. [2023-09-01 08:15:42,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.470378301213419 [2023-09-01 08:15:42,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 659 transitions. [2023-09-01 08:15:42,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 659 transitions. [2023-09-01 08:15:42,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:15:42,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 659 transitions. [2023-09-01 08:15:42,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:42,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:42,374 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:42,375 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 159 flow. Second operand 3 states and 659 transitions. [2023-09-01 08:15:42,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 100 transitions, 424 flow [2023-09-01 08:15:42,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 100 transitions, 406 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 08:15:42,408 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 150 flow [2023-09-01 08:15:42,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2023-09-01 08:15:42,417 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -19 predicate places. [2023-09-01 08:15:42,420 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 150 flow [2023-09-01 08:15:42,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:42,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:15:42,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:15:42,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:15:42,422 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-09-01 08:15:42,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:15:42,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1663692, now seen corresponding path program 1 times [2023-09-01 08:15:42,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:15:42,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113945404] [2023-09-01 08:15:42,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:15:42,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:15:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:15:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:15:42,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:15:42,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113945404] [2023-09-01 08:15:42,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113945404] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:15:42,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:15:42,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:15:42,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269643304] [2023-09-01 08:15:42,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:15:42,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:15:42,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:15:42,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:15:42,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:15:42,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 467 [2023-09-01 08:15:42,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:42,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:15:42,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 467 [2023-09-01 08:15:42,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:15:49,068 INFO L130 PetriNetUnfolder]: 29811/37351 cut-off events. [2023-09-01 08:15:49,068 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-09-01 08:15:49,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75051 conditions, 37351 events. 29811/37351 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 3753. Compared 204455 event pairs, 15652 based on Foata normal form. 0/8663 useless extension candidates. Maximal degree in co-relation 37514. Up to 37131 conditions per place. [2023-09-01 08:15:49,246 INFO L137 encePairwiseOnDemand]: 464/467 looper letters, 51 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-09-01 08:15:49,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 246 flow [2023-09-01 08:15:49,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:15:49,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:15:49,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 573 transitions. [2023-09-01 08:15:49,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4089935760171306 [2023-09-01 08:15:49,250 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 573 transitions. [2023-09-01 08:15:49,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 573 transitions. [2023-09-01 08:15:49,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:15:49,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 573 transitions. [2023-09-01 08:15:49,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:49,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:49,257 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:49,257 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 150 flow. Second operand 3 states and 573 transitions. [2023-09-01 08:15:49,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 246 flow [2023-09-01 08:15:49,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:15:49,261 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 136 flow [2023-09-01 08:15:49,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2023-09-01 08:15:49,262 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -21 predicate places. [2023-09-01 08:15:49,262 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 136 flow [2023-09-01 08:15:49,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:49,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:15:49,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:15:49,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 08:15:49,263 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-09-01 08:15:49,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:15:49,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1663691, now seen corresponding path program 1 times [2023-09-01 08:15:49,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:15:49,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838283354] [2023-09-01 08:15:49,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:15:49,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:15:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:15:49,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:15:49,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:15:49,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838283354] [2023-09-01 08:15:49,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838283354] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:15:49,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715519716] [2023-09-01 08:15:49,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:15:49,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:15:49,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:15:49,336 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:15:49,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:15:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:15:49,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:15:49,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:15:49,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:15:49,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:15:49,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:15:49,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715519716] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:15:49,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:15:49,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:15:49,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787749131] [2023-09-01 08:15:49,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:15:49,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:15:49,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:15:49,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:15:49,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:15:49,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 467 [2023-09-01 08:15:49,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 136 flow. Second operand has 7 states, 7 states have (on average 175.14285714285714) internal successors, (1226), 7 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:49,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:15:49,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 467 [2023-09-01 08:15:49,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:16:04,757 INFO L130 PetriNetUnfolder]: 74454/93301 cut-off events. [2023-09-01 08:16:04,758 INFO L131 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2023-09-01 08:16:04,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187451 conditions, 93301 events. 74454/93301 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 6111. Compared 546072 event pairs, 39126 based on Foata normal form. 0/22175 useless extension candidates. Maximal degree in co-relation 187443. Up to 18567 conditions per place. [2023-09-01 08:16:05,143 INFO L137 encePairwiseOnDemand]: 461/467 looper letters, 220 selfloop transitions, 13 changer transitions 0/236 dead transitions. [2023-09-01 08:16:05,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 236 transitions, 1006 flow [2023-09-01 08:16:05,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:16:05,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:16:05,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1283 transitions. [2023-09-01 08:16:05,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4578872234118487 [2023-09-01 08:16:05,148 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1283 transitions. [2023-09-01 08:16:05,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1283 transitions. [2023-09-01 08:16:05,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:16:05,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1283 transitions. [2023-09-01 08:16:05,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 213.83333333333334) internal successors, (1283), 6 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:05,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 467.0) internal successors, (3269), 7 states have internal predecessors, (3269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:05,158 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 467.0) internal successors, (3269), 7 states have internal predecessors, (3269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:05,158 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 136 flow. Second operand 6 states and 1283 transitions. [2023-09-01 08:16:05,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 236 transitions, 1006 flow [2023-09-01 08:16:05,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 236 transitions, 1005 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:16:05,162 INFO L231 Difference]: Finished difference. Result has 63 places, 64 transitions, 228 flow [2023-09-01 08:16:05,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=228, PETRI_PLACES=63, PETRI_TRANSITIONS=64} [2023-09-01 08:16:05,163 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -14 predicate places. [2023-09-01 08:16:05,163 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 64 transitions, 228 flow [2023-09-01 08:16:05,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 175.14285714285714) internal successors, (1226), 7 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:05,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:16:05,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:16:05,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 08:16:05,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:16:05,372 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-09-01 08:16:05,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:16:05,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1963750672, now seen corresponding path program 1 times [2023-09-01 08:16:05,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:16:05,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960842648] [2023-09-01 08:16:05,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:16:05,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:16:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:16:05,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:16:05,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:16:05,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960842648] [2023-09-01 08:16:05,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960842648] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:16:05,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:16:05,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:16:05,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574231030] [2023-09-01 08:16:05,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:16:05,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:16:05,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:16:05,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:16:05,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:16:05,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 467 [2023-09-01 08:16:05,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 64 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 168.2) internal successors, (841), 5 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:05,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:16:05,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 467 [2023-09-01 08:16:05,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:16:15,287 INFO L130 PetriNetUnfolder]: 48934/64020 cut-off events. [2023-09-01 08:16:15,287 INFO L131 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2023-09-01 08:16:15,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128813 conditions, 64020 events. 48934/64020 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 6431. Compared 416179 event pairs, 31340 based on Foata normal form. 6/17340 useless extension candidates. Maximal degree in co-relation 128801. Up to 63605 conditions per place. [2023-09-01 08:16:15,592 INFO L137 encePairwiseOnDemand]: 462/467 looper letters, 59 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2023-09-01 08:16:15,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 70 transitions, 410 flow [2023-09-01 08:16:15,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:16:15,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:16:15,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 894 transitions. [2023-09-01 08:16:15,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828693790149893 [2023-09-01 08:16:15,596 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 894 transitions. [2023-09-01 08:16:15,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 894 transitions. [2023-09-01 08:16:15,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:16:15,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 894 transitions. [2023-09-01 08:16:15,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 178.8) internal successors, (894), 5 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:15,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 467.0) internal successors, (2802), 6 states have internal predecessors, (2802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:15,604 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 467.0) internal successors, (2802), 6 states have internal predecessors, (2802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:15,604 INFO L175 Difference]: Start difference. First operand has 63 places, 64 transitions, 228 flow. Second operand 5 states and 894 transitions. [2023-09-01 08:16:15,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 70 transitions, 410 flow [2023-09-01 08:16:15,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 70 transitions, 384 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-09-01 08:16:15,607 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 250 flow [2023-09-01 08:16:15,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2023-09-01 08:16:15,608 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -8 predicate places. [2023-09-01 08:16:15,608 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 250 flow [2023-09-01 08:16:15,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 168.2) internal successors, (841), 5 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:15,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:16:15,609 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:16:15,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 08:16:15,610 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-09-01 08:16:15,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:16:15,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1974912787, now seen corresponding path program 2 times [2023-09-01 08:16:15,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:16:15,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108114723] [2023-09-01 08:16:15,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:16:15,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:16:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:16:15,688 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:16:15,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:16:15,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108114723] [2023-09-01 08:16:15,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108114723] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:16:15,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771979033] [2023-09-01 08:16:15,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:16:15,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:16:15,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:16:15,693 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:16:15,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:16:16,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:16:16,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:16:16,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:16:16,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:16:16,052 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:16:16,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:16:16,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771979033] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:16:16,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:16:16,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:16:16,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918745466] [2023-09-01 08:16:16,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:16:16,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:16:16,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:16:16,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:16:16,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:16:16,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 467 [2023-09-01 08:16:16,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:16,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:16:16,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 467 [2023-09-01 08:16:16,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:16:27,516 INFO L130 PetriNetUnfolder]: 59622/74707 cut-off events. [2023-09-01 08:16:27,516 INFO L131 PetriNetUnfolder]: For 173/173 co-relation queries the response was YES. [2023-09-01 08:16:27,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150162 conditions, 74707 events. 59622/74707 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 6617. Compared 436874 event pairs, 31304 based on Foata normal form. 1/17336 useless extension candidates. Maximal degree in co-relation 150146. Up to 74262 conditions per place. [2023-09-01 08:16:27,907 INFO L137 encePairwiseOnDemand]: 464/467 looper letters, 55 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2023-09-01 08:16:27,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 64 transitions, 362 flow [2023-09-01 08:16:27,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:16:27,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:16:27,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 577 transitions. [2023-09-01 08:16:27,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4118486795146324 [2023-09-01 08:16:27,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 577 transitions. [2023-09-01 08:16:27,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 577 transitions. [2023-09-01 08:16:27,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:16:27,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 577 transitions. [2023-09-01 08:16:27,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:27,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:27,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:27,914 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 250 flow. Second operand 3 states and 577 transitions. [2023-09-01 08:16:27,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 64 transitions, 362 flow [2023-09-01 08:16:27,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 64 transitions, 350 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 08:16:27,918 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 240 flow [2023-09-01 08:16:27,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2023-09-01 08:16:27,920 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -8 predicate places. [2023-09-01 08:16:27,924 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 240 flow [2023-09-01 08:16:27,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:27,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:16:27,925 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 08:16:27,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 08:16:28,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:16:28,133 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-09-01 08:16:28,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:16:28,133 INFO L85 PathProgramCache]: Analyzing trace with hash -747294157, now seen corresponding path program 1 times [2023-09-01 08:16:28,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:16:28,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478207041] [2023-09-01 08:16:28,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:16:28,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:16:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:16:28,224 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:16:28,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:16:28,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478207041] [2023-09-01 08:16:28,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478207041] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:16:28,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:16:28,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:16:28,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142699921] [2023-09-01 08:16:28,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:16:28,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:16:28,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:16:28,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:16:28,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:16:28,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 467 [2023-09-01 08:16:28,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 169.25) internal successors, (677), 4 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:28,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:16:28,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 467 [2023-09-01 08:16:28,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:16:39,776 INFO L130 PetriNetUnfolder]: 59621/74701 cut-off events. [2023-09-01 08:16:39,776 INFO L131 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2023-09-01 08:16:39,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150135 conditions, 74701 events. 59621/74701 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 6617. Compared 436895 event pairs, 31304 based on Foata normal form. 1/17330 useless extension candidates. Maximal degree in co-relation 150118. Up to 74256 conditions per place. [2023-09-01 08:16:40,200 INFO L137 encePairwiseOnDemand]: 463/467 looper letters, 52 selfloop transitions, 7 changer transitions 1/63 dead transitions. [2023-09-01 08:16:40,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 63 transitions, 353 flow [2023-09-01 08:16:40,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:16:40,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:16:40,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 724 transitions. [2023-09-01 08:16:40,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875802997858672 [2023-09-01 08:16:40,202 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 724 transitions. [2023-09-01 08:16:40,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 724 transitions. [2023-09-01 08:16:40,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:16:40,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 724 transitions. [2023-09-01 08:16:40,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:40,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 467.0) internal successors, (2335), 5 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:40,208 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 467.0) internal successors, (2335), 5 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:40,208 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 240 flow. Second operand 4 states and 724 transitions. [2023-09-01 08:16:40,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 63 transitions, 353 flow [2023-09-01 08:16:40,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 63 transitions, 332 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-09-01 08:16:40,211 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 220 flow [2023-09-01 08:16:40,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2023-09-01 08:16:40,212 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -10 predicate places. [2023-09-01 08:16:40,212 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 220 flow [2023-09-01 08:16:40,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.25) internal successors, (677), 4 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:40,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:16:40,213 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-09-01 08:16:40,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 08:16:40,213 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-09-01 08:16:40,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:16:40,214 INFO L85 PathProgramCache]: Analyzing trace with hash 829868949, now seen corresponding path program 1 times [2023-09-01 08:16:40,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:16:40,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023735338] [2023-09-01 08:16:40,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:16:40,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:16:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:16:40,369 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:16:40,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:16:40,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023735338] [2023-09-01 08:16:40,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023735338] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:16:40,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153002794] [2023-09-01 08:16:40,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:16:40,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:16:40,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:16:40,371 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:16:40,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 08:16:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:16:40,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 08:16:40,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:16:40,728 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:16:40,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:16:40,770 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:16:40,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153002794] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:16:40,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:16:40,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-09-01 08:16:40,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214281397] [2023-09-01 08:16:40,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:16:40,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:16:40,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:16:40,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:16:40,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:16:41,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 467 [2023-09-01 08:16:41,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 220 flow. Second operand has 13 states, 13 states have (on average 167.23076923076923) internal successors, (2174), 13 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:41,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:16:41,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 467 [2023-09-01 08:16:41,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:16:52,514 INFO L130 PetriNetUnfolder]: 58244/73011 cut-off events. [2023-09-01 08:16:52,515 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2023-09-01 08:16:52,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146734 conditions, 73011 events. 58244/73011 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 5531. Compared 419928 event pairs, 30612 based on Foata normal form. 1/17428 useless extension candidates. Maximal degree in co-relation 146719. Up to 55626 conditions per place. [2023-09-01 08:16:52,878 INFO L137 encePairwiseOnDemand]: 460/467 looper letters, 90 selfloop transitions, 13 changer transitions 0/106 dead transitions. [2023-09-01 08:16:52,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 106 transitions, 535 flow [2023-09-01 08:16:52,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:16:52,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:16:52,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1427 transitions. [2023-09-01 08:16:52,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819593147751606 [2023-09-01 08:16:52,882 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1427 transitions. [2023-09-01 08:16:52,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1427 transitions. [2023-09-01 08:16:52,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:16:52,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1427 transitions. [2023-09-01 08:16:52,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 178.375) internal successors, (1427), 8 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:52,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 467.0) internal successors, (4203), 9 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:52,892 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 467.0) internal successors, (4203), 9 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:52,892 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 220 flow. Second operand 8 states and 1427 transitions. [2023-09-01 08:16:52,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 106 transitions, 535 flow [2023-09-01 08:16:52,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 106 transitions, 513 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-09-01 08:16:52,895 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 251 flow [2023-09-01 08:16:52,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=251, PETRI_PLACES=70, PETRI_TRANSITIONS=65} [2023-09-01 08:16:52,896 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -7 predicate places. [2023-09-01 08:16:52,896 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 251 flow [2023-09-01 08:16:52,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 167.23076923076923) internal successors, (2174), 13 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:52,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:16:52,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:16:52,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 08:16:53,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:16:53,104 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-09-01 08:16:53,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:16:53,104 INFO L85 PathProgramCache]: Analyzing trace with hash 829887255, now seen corresponding path program 1 times [2023-09-01 08:16:53,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:16:53,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194252982] [2023-09-01 08:16:53,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:16:53,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:16:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:16:53,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:16:53,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:16:53,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194252982] [2023-09-01 08:16:53,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194252982] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:16:53,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952324154] [2023-09-01 08:16:53,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:16:53,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:16:53,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:16:53,481 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:16:53,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 08:16:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:16:53,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 08:16:53,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:16:53,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:16:53,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:16:53,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:16:53,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:16:53,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:16:54,002 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_265 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_265) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2023-09-01 08:16:54,035 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:16:54,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-09-01 08:16:54,047 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:16:54,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-09-01 08:16:54,053 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 7 treesize of output 5 [2023-09-01 08:16:54,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-09-01 08:16:54,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952324154] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:16:54,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:16:54,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-09-01 08:16:54,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335411818] [2023-09-01 08:16:54,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:16:54,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 08:16:54,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:16:54,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 08:16:54,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=125, Unknown=1, NotChecked=22, Total=182 [2023-09-01 08:16:54,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 467 [2023-09-01 08:16:54,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 251 flow. Second operand has 14 states, 14 states have (on average 139.35714285714286) internal successors, (1951), 14 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:54,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:16:54,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 467 [2023-09-01 08:16:54,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:17:08,389 INFO L130 PetriNetUnfolder]: 69455/92701 cut-off events. [2023-09-01 08:17:08,390 INFO L131 PetriNetUnfolder]: For 1041/1041 co-relation queries the response was YES. [2023-09-01 08:17:08,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187713 conditions, 92701 events. 69455/92701 cut-off events. For 1041/1041 co-relation queries the response was YES. Maximal size of possible extension queue 8928. Compared 666734 event pairs, 22460 based on Foata normal form. 3/26417 useless extension candidates. Maximal degree in co-relation 187698. Up to 54080 conditions per place. [2023-09-01 08:17:08,856 INFO L137 encePairwiseOnDemand]: 450/467 looper letters, 78 selfloop transitions, 31 changer transitions 0/111 dead transitions. [2023-09-01 08:17:08,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 111 transitions, 566 flow [2023-09-01 08:17:08,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 08:17:08,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 08:17:08,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1342 transitions. [2023-09-01 08:17:08,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3192957411372829 [2023-09-01 08:17:08,863 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1342 transitions. [2023-09-01 08:17:08,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1342 transitions. [2023-09-01 08:17:08,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:17:08,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1342 transitions. [2023-09-01 08:17:08,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 149.11111111111111) internal successors, (1342), 9 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:08,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 467.0) internal successors, (4670), 10 states have internal predecessors, (4670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:08,873 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 467.0) internal successors, (4670), 10 states have internal predecessors, (4670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:08,873 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 251 flow. Second operand 9 states and 1342 transitions. [2023-09-01 08:17:08,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 111 transitions, 566 flow [2023-09-01 08:17:08,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 111 transitions, 528 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-09-01 08:17:08,877 INFO L231 Difference]: Finished difference. Result has 77 places, 82 transitions, 353 flow [2023-09-01 08:17:08,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=353, PETRI_PLACES=77, PETRI_TRANSITIONS=82} [2023-09-01 08:17:08,880 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2023-09-01 08:17:08,880 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 82 transitions, 353 flow [2023-09-01 08:17:08,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 139.35714285714286) internal successors, (1951), 14 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:08,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:17:08,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:17:08,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 08:17:09,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:17:09,091 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-09-01 08:17:09,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:17:09,091 INFO L85 PathProgramCache]: Analyzing trace with hash 829887258, now seen corresponding path program 1 times [2023-09-01 08:17:09,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:17:09,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835408760] [2023-09-01 08:17:09,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:17:09,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:17:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:17:09,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:17:09,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:17:09,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835408760] [2023-09-01 08:17:09,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835408760] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:17:09,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575617360] [2023-09-01 08:17:09,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:17:09,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:17:09,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:17:09,601 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:17:09,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 08:17:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:17:09,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 28 conjunts are in the unsatisfiable core [2023-09-01 08:17:09,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:17:09,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:17:09,973 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-09-01 08:17:09,973 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 [2023-09-01 08:17:10,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:17:10,060 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:17:10,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:17:10,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:17:10,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:17:10,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:17:10,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:17:10,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:17:12,291 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:17:12,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-09-01 08:17:12,301 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:17:12,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2023-09-01 08:17:12,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2023-09-01 08:17:12,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-09-01 08:17:12,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:17:12,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575617360] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:17:12,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:17:12,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-09-01 08:17:12,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491754530] [2023-09-01 08:17:12,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:17:12,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 08:17:12,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:17:12,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 08:17:12,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=240, Unknown=7, NotChecked=0, Total=306 [2023-09-01 08:17:14,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:17:16,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:17:18,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:17:20,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:17:22,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:17:24,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:17:26,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:17:28,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:17:30,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:17:32,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:17:34,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:17:36,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:17:39,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:17:41,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:17:43,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:17:43,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 467 [2023-09-01 08:17:43,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 82 transitions, 353 flow. Second operand has 18 states, 18 states have (on average 129.16666666666666) internal successors, (2325), 18 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:43,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:17:43,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 467 [2023-09-01 08:17:43,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:17:57,696 INFO L130 PetriNetUnfolder]: 67736/90978 cut-off events. [2023-09-01 08:17:57,696 INFO L131 PetriNetUnfolder]: For 12128/12128 co-relation queries the response was YES. [2023-09-01 08:17:57,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197216 conditions, 90978 events. 67736/90978 cut-off events. For 12128/12128 co-relation queries the response was YES. Maximal size of possible extension queue 8766. Compared 658748 event pairs, 35646 based on Foata normal form. 0/28696 useless extension candidates. Maximal degree in co-relation 197199. Up to 84634 conditions per place. [2023-09-01 08:17:58,160 INFO L137 encePairwiseOnDemand]: 458/467 looper letters, 95 selfloop transitions, 15 changer transitions 0/112 dead transitions. [2023-09-01 08:17:58,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 112 transitions, 643 flow [2023-09-01 08:17:58,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:17:58,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:17:58,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1120 transitions. [2023-09-01 08:17:58,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29978586723768735 [2023-09-01 08:17:58,165 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1120 transitions. [2023-09-01 08:17:58,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1120 transitions. [2023-09-01 08:17:58,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:17:58,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1120 transitions. [2023-09-01 08:17:58,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:58,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 467.0) internal successors, (4203), 9 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:58,172 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 467.0) internal successors, (4203), 9 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:58,173 INFO L175 Difference]: Start difference. First operand has 77 places, 82 transitions, 353 flow. Second operand 8 states and 1120 transitions. [2023-09-01 08:17:58,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 112 transitions, 643 flow [2023-09-01 08:17:58,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 112 transitions, 634 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:17:58,179 INFO L231 Difference]: Finished difference. Result has 83 places, 83 transitions, 383 flow [2023-09-01 08:17:58,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=383, PETRI_PLACES=83, PETRI_TRANSITIONS=83} [2023-09-01 08:17:58,180 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2023-09-01 08:17:58,180 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 83 transitions, 383 flow [2023-09-01 08:17:58,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 129.16666666666666) internal successors, (2325), 18 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:58,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:17:58,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:17:58,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-09-01 08:17:58,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:17:58,389 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-09-01 08:17:58,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:17:58,390 INFO L85 PathProgramCache]: Analyzing trace with hash 829887259, now seen corresponding path program 1 times [2023-09-01 08:17:58,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:17:58,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736406259] [2023-09-01 08:17:58,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:17:58,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:17:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:17:58,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:17:58,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:17:58,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736406259] [2023-09-01 08:17:58,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736406259] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:17:58,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479161181] [2023-09-01 08:17:58,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:17:58,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:17:58,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:17:58,759 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:17:58,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 08:17:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:17:59,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 08:17:59,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:17:59,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:17:59,149 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-09-01 08:17:59,150 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 [2023-09-01 08:17:59,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:17:59,222 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:17:59,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:17:59,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:17:59,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:17:59,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:17:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:17:59,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:17:59,422 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_369 (Array Int Int)) (v_ArrVal_368 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_368) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_369) c_~A~0.base) c_~A~0.offset) 2147483648)) is different from false [2023-09-01 08:17:59,456 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:17:59,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-09-01 08:17:59,465 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:17:59,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 59 [2023-09-01 08:17:59,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-09-01 08:17:59,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-09-01 08:17:59,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-09-01 08:17:59,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479161181] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:17:59,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:17:59,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-09-01 08:17:59,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796097709] [2023-09-01 08:17:59,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:17:59,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 08:17:59,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:17:59,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 08:17:59,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=211, Unknown=5, NotChecked=30, Total=306 [2023-09-01 08:17:59,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 467 [2023-09-01 08:17:59,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 83 transitions, 383 flow. Second operand has 18 states, 18 states have (on average 135.16666666666666) internal successors, (2433), 18 states have internal predecessors, (2433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:59,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:17:59,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 467 [2023-09-01 08:17:59,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:14,258 INFO L130 PetriNetUnfolder]: 67787/91025 cut-off events. [2023-09-01 08:18:14,258 INFO L131 PetriNetUnfolder]: For 24265/24265 co-relation queries the response was YES. [2023-09-01 08:18:14,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199014 conditions, 91025 events. 67787/91025 cut-off events. For 24265/24265 co-relation queries the response was YES. Maximal size of possible extension queue 8832. Compared 657898 event pairs, 38114 based on Foata normal form. 0/29970 useless extension candidates. Maximal degree in co-relation 198996. Up to 84686 conditions per place. [2023-09-01 08:18:14,768 INFO L137 encePairwiseOnDemand]: 458/467 looper letters, 95 selfloop transitions, 16 changer transitions 0/113 dead transitions. [2023-09-01 08:18:14,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 113 transitions, 679 flow [2023-09-01 08:18:14,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:18:14,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:18:14,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1167 transitions. [2023-09-01 08:18:14,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31236616702355463 [2023-09-01 08:18:14,772 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1167 transitions. [2023-09-01 08:18:14,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1167 transitions. [2023-09-01 08:18:14,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:14,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1167 transitions. [2023-09-01 08:18:14,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 145.875) internal successors, (1167), 8 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:14,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 467.0) internal successors, (4203), 9 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:14,781 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 467.0) internal successors, (4203), 9 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:14,781 INFO L175 Difference]: Start difference. First operand has 83 places, 83 transitions, 383 flow. Second operand 8 states and 1167 transitions. [2023-09-01 08:18:14,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 113 transitions, 679 flow [2023-09-01 08:18:14,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 113 transitions, 666 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 08:18:14,831 INFO L231 Difference]: Finished difference. Result has 89 places, 84 transitions, 415 flow [2023-09-01 08:18:14,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=415, PETRI_PLACES=89, PETRI_TRANSITIONS=84} [2023-09-01 08:18:14,832 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 12 predicate places. [2023-09-01 08:18:14,832 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 84 transitions, 415 flow [2023-09-01 08:18:14,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 135.16666666666666) internal successors, (2433), 18 states have internal predecessors, (2433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:14,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:14,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:18:14,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 08:18:15,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:18:15,041 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-09-01 08:18:15,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:15,042 INFO L85 PathProgramCache]: Analyzing trace with hash 829887251, now seen corresponding path program 1 times [2023-09-01 08:18:15,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:15,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550572130] [2023-09-01 08:18:15,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:15,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:15,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:18:15,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:15,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550572130] [2023-09-01 08:18:15,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550572130] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:18:15,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:18:15,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:18:15,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219017726] [2023-09-01 08:18:15,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:18:15,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:18:15,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:15,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:18:15,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:18:15,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 467 [2023-09-01 08:18:15,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 84 transitions, 415 flow. Second operand has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:15,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:15,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 467 [2023-09-01 08:18:15,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand