./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product.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-bad-dot-product.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 1890d03ecee4b13e5a6c0f8c72292cb7ef9118f93d1435df375cec86140a0197 --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 08:01:19,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:01:19,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:01:19,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:01:19,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:01:19,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:01:19,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:01:19,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:01:19,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:01:19,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:01:19,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:01:19,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:01:19,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:01:19,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:01:19,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:01:19,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:01:19,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:01:19,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:01:19,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:01:19,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:01:19,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:01:19,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:01:19,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:01:19,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:01:19,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:01:19,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:01:19,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:01:19,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:01:19,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:01:19,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:01:19,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:01:19,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:01:19,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:01:19,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:01:19,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:01:19,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:01:19,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:01:19,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:01:19,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:01:19,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:01:19,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:01:19,889 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:01:19,931 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:01:19,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:01:19,932 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:01:19,933 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:01:19,934 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:01:19,934 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:01:19,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:01:19,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:01:19,935 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:01:19,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:01:19,936 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:01:19,936 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:01:19,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:01:19,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:01:19,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:01:19,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:01:19,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:01:19,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:01:19,941 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:01:19,941 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:01:19,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:01:19,942 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:01:19,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:01:19,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:01:19,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:01:19,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:01:19,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:01:19,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:01:19,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:01:19,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:01:19,943 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:01:19,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:01:19,944 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:01:19,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:01:19,944 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:01:19,945 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:01:19,945 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:01:19,945 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1890d03ecee4b13e5a6c0f8c72292cb7ef9118f93d1435df375cec86140a0197 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:01:20,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:01:20,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:01:20,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:01:20,301 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:01:20,302 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:01:20,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product.wvr.c [2023-09-01 08:01:21,437 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:01:21,662 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:01:21,663 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product.wvr.c [2023-09-01 08:01:21,670 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c393d9011/0da2fed1c66b4a9dad4ccbf4b634c05e/FLAGa12bfbd3f [2023-09-01 08:01:21,681 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c393d9011/0da2fed1c66b4a9dad4ccbf4b634c05e [2023-09-01 08:01:21,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:01:21,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:01:21,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:01:21,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:01:21,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:01:21,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:01:21" (1/1) ... [2023-09-01 08:01:21,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@281a8807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:01:21, skipping insertion in model container [2023-09-01 08:01:21,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:01:21" (1/1) ... [2023-09-01 08:01:21,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:01:21,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:01:21,922 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-bad-dot-product.wvr.c[2865,2878] [2023-09-01 08:01:21,937 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:01:21,946 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:01:21,984 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-bad-dot-product.wvr.c[2865,2878] [2023-09-01 08:01:21,994 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:01:22,003 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:01:22,004 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:01:22,011 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:01:22,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:01:22 WrapperNode [2023-09-01 08:01:22,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:01:22,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:01:22,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:01:22,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:01:22,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:01:22" (1/1) ... [2023-09-01 08:01:22,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:01:22" (1/1) ... [2023-09-01 08:01:22,120 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 22, statements flattened = 338 [2023-09-01 08:01:22,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:01:22,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:01:22,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:01:22,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:01:22,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:01:22" (1/1) ... [2023-09-01 08:01:22,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:01:22" (1/1) ... [2023-09-01 08:01:22,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:01:22" (1/1) ... [2023-09-01 08:01:22,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:01:22" (1/1) ... [2023-09-01 08:01:22,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:01:22" (1/1) ... [2023-09-01 08:01:22,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:01:22" (1/1) ... [2023-09-01 08:01:22,177 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:01:22" (1/1) ... [2023-09-01 08:01:22,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:01:22" (1/1) ... [2023-09-01 08:01:22,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:01:22,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:01:22,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:01:22,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:01:22,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:01:22" (1/1) ... [2023-09-01 08:01:22,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:01:22,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:01:22,222 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 08:01:22,251 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 08:01:22,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:01:22,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:01:22,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:01:22,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:01:22,267 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:01:22,267 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:01:22,267 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:01:22,267 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:01:22,268 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:01:22,268 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:01:22,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:01:22,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:01:22,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:01:22,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:01:22,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:01:22,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:01:22,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:01:22,270 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 08:01:22,389 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:01:22,393 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:01:22,920 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:01:23,521 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:01:23,521 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-09-01 08:01:23,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:01:23 BoogieIcfgContainer [2023-09-01 08:01:23,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:01:23,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:01:23,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:01:23,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:01:23,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:01:21" (1/3) ... [2023-09-01 08:01:23,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456396aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:01:23, skipping insertion in model container [2023-09-01 08:01:23,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:01:22" (2/3) ... [2023-09-01 08:01:23,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456396aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:01:23, skipping insertion in model container [2023-09-01 08:01:23,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:01:23" (3/3) ... [2023-09-01 08:01:23,533 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2023-09-01 08:01:23,543 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:01:23,558 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:01:23,558 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2023-09-01 08:01:23,558 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:01:23,761 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 08:01:23,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 287 transitions, 598 flow [2023-09-01 08:01:23,957 INFO L130 PetriNetUnfolder]: 25/284 cut-off events. [2023-09-01 08:01:23,957 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:01:23,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 284 events. 25/284 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 572 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 218. Up to 2 conditions per place. [2023-09-01 08:01:23,967 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 287 transitions, 598 flow [2023-09-01 08:01:23,976 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 266 transitions, 547 flow [2023-09-01 08:01:23,980 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:01:23,992 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 252 places, 266 transitions, 547 flow [2023-09-01 08:01:23,996 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 252 places, 266 transitions, 547 flow [2023-09-01 08:01:23,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 266 transitions, 547 flow [2023-09-01 08:01:24,073 INFO L130 PetriNetUnfolder]: 24/266 cut-off events. [2023-09-01 08:01:24,074 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:01:24,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 266 events. 24/266 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 564 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 218. Up to 2 conditions per place. [2023-09-01 08:01:24,086 INFO L119 LiptonReduction]: Number of co-enabled transitions 13608 [2023-09-01 08:01:41,517 INFO L134 LiptonReduction]: Checked pairs total: 23505 [2023-09-01 08:01:41,517 INFO L136 LiptonReduction]: Total number of compositions: 292 [2023-09-01 08:01:41,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:01:41,535 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;@4ee55824, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:01:41,535 INFO L358 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2023-09-01 08:01:41,538 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:01:41,538 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:01:41,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:01:41,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:01:41,539 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-09-01 08:01:41,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:01:41,544 INFO L85 PathProgramCache]: Analyzing trace with hash 48717, now seen corresponding path program 1 times [2023-09-01 08:01:41,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:01:41,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191306797] [2023-09-01 08:01:41,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:01:41,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:01:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:01:41,904 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 08:01:41,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:01:41,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191306797] [2023-09-01 08:01:41,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191306797] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:01:41,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:01:41,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:01:41,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938439661] [2023-09-01 08:01:41,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:01:41,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:01:41,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:01:41,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:01:41,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:01:41,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 579 [2023-09-01 08:01:41,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 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 08:01:41,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:01:41,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 579 [2023-09-01 08:01:41,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:01:46,409 INFO L130 PetriNetUnfolder]: 26827/36349 cut-off events. [2023-09-01 08:01:46,409 INFO L131 PetriNetUnfolder]: For 1216/1216 co-relation queries the response was YES. [2023-09-01 08:01:46,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73685 conditions, 36349 events. 26827/36349 cut-off events. For 1216/1216 co-relation queries the response was YES. Maximal size of possible extension queue 2493. Compared 225297 event pairs, 20520 based on Foata normal form. 0/13063 useless extension candidates. Maximal degree in co-relation 34479. Up to 18135 conditions per place. [2023-09-01 08:01:46,651 INFO L137 encePairwiseOnDemand]: 565/579 looper letters, 105 selfloop transitions, 4 changer transitions 0/112 dead transitions. [2023-09-01 08:01:46,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 112 transitions, 472 flow [2023-09-01 08:01:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:01:46,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:01:46,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 833 transitions. [2023-09-01 08:01:46,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47956246401842256 [2023-09-01 08:01:46,667 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 833 transitions. [2023-09-01 08:01:46,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 833 transitions. [2023-09-01 08:01:46,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:01:46,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 833 transitions. [2023-09-01 08:01:46,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 0 states have call successors, (0), 0 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 08:01:46,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 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 08:01:46,684 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 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 08:01:46,686 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 147 flow. Second operand 3 states and 833 transitions. [2023-09-01 08:01:46,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 112 transitions, 472 flow [2023-09-01 08:01:46,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 112 transitions, 454 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 08:01:46,720 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 162 flow [2023-09-01 08:01:46,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2023-09-01 08:01:46,725 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2023-09-01 08:01:46,725 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 162 flow [2023-09-01 08:01:46,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 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 08:01:46,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:01:46,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:01:46,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:01:46,727 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-09-01 08:01:46,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:01:46,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1512726, now seen corresponding path program 1 times [2023-09-01 08:01:46,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:01:46,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33161751] [2023-09-01 08:01:46,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:01:46,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:01:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:01:46,799 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 08:01:46,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:01:46,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33161751] [2023-09-01 08:01:46,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33161751] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:01:46,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185915790] [2023-09-01 08:01:46,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:01:46,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:01:46,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:01:46,804 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 08:01:46,838 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 08:01:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:01:46,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:01:46,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:01:47,023 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 08:01:47,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:01:47,038 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 08:01:47,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185915790] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:01:47,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:01:47,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:01:47,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349863670] [2023-09-01 08:01:47,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:01:47,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:01:47,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:01:47,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:01:47,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:01:47,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 579 [2023-09-01 08:01:47,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 237.14285714285714) internal successors, (1660), 7 states have internal predecessors, (1660), 0 states have call successors, (0), 0 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 08:01:47,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:01:47,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 579 [2023-09-01 08:01:47,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:01:55,441 INFO L130 PetriNetUnfolder]: 67072/90871 cut-off events. [2023-09-01 08:01:55,442 INFO L131 PetriNetUnfolder]: For 687/687 co-relation queries the response was YES. [2023-09-01 08:01:55,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183324 conditions, 90871 events. 67072/90871 cut-off events. For 687/687 co-relation queries the response was YES. Maximal size of possible extension queue 5002. Compared 605744 event pairs, 51300 based on Foata normal form. 0/32735 useless extension candidates. Maximal degree in co-relation 146615. Up to 18133 conditions per place. [2023-09-01 08:01:55,876 INFO L137 encePairwiseOnDemand]: 571/579 looper letters, 250 selfloop transitions, 21 changer transitions 0/274 dead transitions. [2023-09-01 08:01:55,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 274 transitions, 1186 flow [2023-09-01 08:01:55,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:01:55,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:01:55,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1929 transitions. [2023-09-01 08:01:55,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4759437453737972 [2023-09-01 08:01:55,883 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1929 transitions. [2023-09-01 08:01:55,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1929 transitions. [2023-09-01 08:01:55,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:01:55,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1929 transitions. [2023-09-01 08:01:55,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 275.57142857142856) internal successors, (1929), 7 states have internal predecessors, (1929), 0 states have call successors, (0), 0 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 08:01:55,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 579.0) internal successors, (4632), 8 states have internal predecessors, (4632), 0 states have call successors, (0), 0 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 08:01:55,899 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 579.0) internal successors, (4632), 8 states have internal predecessors, (4632), 0 states have call successors, (0), 0 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 08:01:55,899 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 162 flow. Second operand 7 states and 1929 transitions. [2023-09-01 08:01:55,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 274 transitions, 1186 flow [2023-09-01 08:01:55,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 274 transitions, 1172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:01:55,907 INFO L231 Difference]: Finished difference. Result has 68 places, 78 transitions, 293 flow [2023-09-01 08:01:55,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=293, PETRI_PLACES=68, PETRI_TRANSITIONS=78} [2023-09-01 08:01:55,908 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2023-09-01 08:01:55,908 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 78 transitions, 293 flow [2023-09-01 08:01:55,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 237.14285714285714) internal successors, (1660), 7 states have internal predecessors, (1660), 0 states have call successors, (0), 0 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 08:01:55,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:01:55,911 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-09-01 08:01:55,920 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 08:01:56,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:01:56,117 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-09-01 08:01:56,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:01:56,118 INFO L85 PathProgramCache]: Analyzing trace with hash 46895917, now seen corresponding path program 1 times [2023-09-01 08:01:56,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:01:56,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843906542] [2023-09-01 08:01:56,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:01:56,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:01:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:01:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:01:56,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:01:56,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843906542] [2023-09-01 08:01:56,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843906542] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:01:56,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90310210] [2023-09-01 08:01:56,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:01:56,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:01:56,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:01:56,247 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 08:01:56,268 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 08:01:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:01:56,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 08:01:56,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:01:56,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:01:56,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:01:56,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90310210] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:01:56,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:01:56,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 08:01:56,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331449052] [2023-09-01 08:01:56,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:01:56,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:01:56,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:01:56,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:01:56,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:01:56,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 579 [2023-09-01 08:01:56,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 78 transitions, 293 flow. Second operand has 5 states, 5 states have (on average 236.8) internal successors, (1184), 5 states have internal predecessors, (1184), 0 states have call successors, (0), 0 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 08:01:56,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:01:56,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 579 [2023-09-01 08:01:56,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:02:04,324 INFO L130 PetriNetUnfolder]: 67066/90863 cut-off events. [2023-09-01 08:02:04,324 INFO L131 PetriNetUnfolder]: For 690/690 co-relation queries the response was YES. [2023-09-01 08:02:04,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183326 conditions, 90863 events. 67066/90863 cut-off events. For 690/690 co-relation queries the response was YES. Maximal size of possible extension queue 4993. Compared 609577 event pairs, 51300 based on Foata normal form. 2/32737 useless extension candidates. Maximal degree in co-relation 109976. Up to 54388 conditions per place. [2023-09-01 08:02:04,737 INFO L137 encePairwiseOnDemand]: 573/579 looper letters, 156 selfloop transitions, 9 changer transitions 0/168 dead transitions. [2023-09-01 08:02:04,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 168 transitions, 777 flow [2023-09-01 08:02:04,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:02:04,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:02:04,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1343 transitions. [2023-09-01 08:02:04,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4639032815198618 [2023-09-01 08:02:04,742 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1343 transitions. [2023-09-01 08:02:04,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1343 transitions. [2023-09-01 08:02:04,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:02:04,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1343 transitions. [2023-09-01 08:02:04,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 268.6) internal successors, (1343), 5 states have internal predecessors, (1343), 0 states have call successors, (0), 0 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 08:02:04,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 579.0) internal successors, (3474), 6 states have internal predecessors, (3474), 0 states have call successors, (0), 0 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 08:02:04,753 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 579.0) internal successors, (3474), 6 states have internal predecessors, (3474), 0 states have call successors, (0), 0 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 08:02:04,753 INFO L175 Difference]: Start difference. First operand has 68 places, 78 transitions, 293 flow. Second operand 5 states and 1343 transitions. [2023-09-01 08:02:04,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 168 transitions, 777 flow [2023-09-01 08:02:04,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 168 transitions, 758 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 08:02:04,759 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 238 flow [2023-09-01 08:02:04,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2023-09-01 08:02:04,763 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2023-09-01 08:02:04,763 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 238 flow [2023-09-01 08:02:04,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 236.8) internal successors, (1184), 5 states have internal predecessors, (1184), 0 states have call successors, (0), 0 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 08:02:04,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:02:04,764 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:02:04,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 08:02:04,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-09-01 08:02:04,970 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-09-01 08:02:04,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:02:04,971 INFO L85 PathProgramCache]: Analyzing trace with hash 2117382191, now seen corresponding path program 2 times [2023-09-01 08:02:04,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:02:04,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017792255] [2023-09-01 08:02:04,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:02:04,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:02:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:02:05,090 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 08:02:05,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:02:05,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017792255] [2023-09-01 08:02:05,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017792255] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:02:05,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686018168] [2023-09-01 08:02:05,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:02:05,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:02:05,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:02:05,093 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 08:02:05,117 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 08:02:05,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:02:05,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:02:05,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:02:05,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:02:05,265 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 08:02:05,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:02:05,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686018168] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:02:05,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:02:05,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:02:05,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711504827] [2023-09-01 08:02:05,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:02:05,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:02:05,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:02:05,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:02:05,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:02:05,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 579 [2023-09-01 08:02:05,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 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 08:02:05,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:02:05,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 579 [2023-09-01 08:02:05,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:02:12,699 INFO L130 PetriNetUnfolder]: 67066/90862 cut-off events. [2023-09-01 08:02:12,699 INFO L131 PetriNetUnfolder]: For 744/744 co-relation queries the response was YES. [2023-09-01 08:02:13,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183319 conditions, 90862 events. 67066/90862 cut-off events. For 744/744 co-relation queries the response was YES. Maximal size of possible extension queue 5487. Compared 616947 event pairs, 51300 based on Foata normal form. 1/32553 useless extension candidates. Maximal degree in co-relation 146601. Up to 90642 conditions per place. [2023-09-01 08:02:13,275 INFO L137 encePairwiseOnDemand]: 576/579 looper letters, 60 selfloop transitions, 6 changer transitions 0/69 dead transitions. [2023-09-01 08:02:13,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 360 flow [2023-09-01 08:02:13,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:02:13,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:02:13,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 769 transitions. [2023-09-01 08:02:13,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44271732872769143 [2023-09-01 08:02:13,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 769 transitions. [2023-09-01 08:02:13,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 769 transitions. [2023-09-01 08:02:13,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:02:13,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 769 transitions. [2023-09-01 08:02:13,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 0 states have call successors, (0), 0 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 08:02:13,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 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 08:02:13,286 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 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 08:02:13,286 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 238 flow. Second operand 3 states and 769 transitions. [2023-09-01 08:02:13,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 69 transitions, 360 flow [2023-09-01 08:02:13,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 69 transitions, 347 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 08:02:13,288 INFO L231 Difference]: Finished difference. Result has 66 places, 69 transitions, 227 flow [2023-09-01 08:02:13,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=66, PETRI_TRANSITIONS=69} [2023-09-01 08:02:13,289 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2023-09-01 08:02:13,289 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 69 transitions, 227 flow [2023-09-01 08:02:13,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 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 08:02:13,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:02:13,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:02:13,301 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 08:02:13,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:02:13,496 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-09-01 08:02:13,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:02:13,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1735768183, now seen corresponding path program 1 times [2023-09-01 08:02:13,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:02:13,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195056811] [2023-09-01 08:02:13,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:02:13,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:02:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:02:13,589 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 08:02:13,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:02:13,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195056811] [2023-09-01 08:02:13,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195056811] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:02:13,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:02:13,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:02:13,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216843688] [2023-09-01 08:02:13,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:02:13,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:02:13,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:02:13,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:02:13,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:02:13,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 579 [2023-09-01 08:02:13,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 69 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 242.33333333333334) internal successors, (727), 3 states have internal predecessors, (727), 0 states have call successors, (0), 0 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 08:02:13,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:02:13,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 579 [2023-09-01 08:02:13,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:02:26,636 INFO L130 PetriNetUnfolder]: 118421/160897 cut-off events. [2023-09-01 08:02:26,637 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-09-01 08:02:26,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324883 conditions, 160897 events. 118421/160897 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 8316. Compared 1136141 event pairs, 74750 based on Foata normal form. 0/58897 useless extension candidates. Maximal degree in co-relation 324827. Up to 89808 conditions per place. [2023-09-01 08:02:27,357 INFO L137 encePairwiseOnDemand]: 575/579 looper letters, 110 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2023-09-01 08:02:27,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 114 transitions, 546 flow [2023-09-01 08:02:27,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:02:27,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:02:27,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 822 transitions. [2023-09-01 08:02:27,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47322970639032813 [2023-09-01 08:02:27,360 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 822 transitions. [2023-09-01 08:02:27,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 822 transitions. [2023-09-01 08:02:27,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:02:27,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 822 transitions. [2023-09-01 08:02:27,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 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 08:02:27,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 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 08:02:27,367 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 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 08:02:27,367 INFO L175 Difference]: Start difference. First operand has 66 places, 69 transitions, 227 flow. Second operand 3 states and 822 transitions. [2023-09-01 08:02:27,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 114 transitions, 546 flow [2023-09-01 08:02:27,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 114 transitions, 534 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:02:27,370 INFO L231 Difference]: Finished difference. Result has 67 places, 70 transitions, 229 flow [2023-09-01 08:02:27,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=67, PETRI_TRANSITIONS=70} [2023-09-01 08:02:27,371 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2023-09-01 08:02:27,371 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 229 flow [2023-09-01 08:02:27,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.33333333333334) internal successors, (727), 3 states have internal predecessors, (727), 0 states have call successors, (0), 0 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 08:02:27,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:02:27,372 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 08:02:27,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:02:27,372 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-09-01 08:02:27,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:02:27,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1733481862, now seen corresponding path program 1 times [2023-09-01 08:02:27,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:02:27,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747331095] [2023-09-01 08:02:27,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:02:27,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:02:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:02:27,494 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 08:02:27,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:02:27,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747331095] [2023-09-01 08:02:27,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747331095] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:02:27,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097232024] [2023-09-01 08:02:27,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:02:27,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:02:27,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:02:27,497 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 08:02:27,500 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 08:02:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:02:27,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:02:27,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:02:27,663 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 08:02:27,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:02:27,721 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 08:02:27,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097232024] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:02:27,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:02:27,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 08:02:27,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698117664] [2023-09-01 08:02:27,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:02:27,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:02:27,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:02:27,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:02:27,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:02:27,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 579 [2023-09-01 08:02:27,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 70 transitions, 229 flow. Second operand has 13 states, 13 states have (on average 237.15384615384616) internal successors, (3083), 13 states have internal predecessors, (3083), 0 states have call successors, (0), 0 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 08:02:27,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:02:27,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 579 [2023-09-01 08:02:27,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:02:57,116 INFO L130 PetriNetUnfolder]: 247501/337218 cut-off events. [2023-09-01 08:02:57,116 INFO L131 PetriNetUnfolder]: For 10365/10365 co-relation queries the response was YES. [2023-09-01 08:02:57,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698875 conditions, 337218 events. 247501/337218 cut-off events. For 10365/10365 co-relation queries the response was YES. Maximal size of possible extension queue 10622. Compared 2500874 event pairs, 195877 based on Foata normal form. 6/128417 useless extension candidates. Maximal degree in co-relation 571731. Up to 37092 conditions per place. [2023-09-01 08:02:58,991 INFO L137 encePairwiseOnDemand]: 574/579 looper letters, 554 selfloop transitions, 31 changer transitions 0/588 dead transitions. [2023-09-01 08:02:58,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 588 transitions, 2657 flow [2023-09-01 08:02:58,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:02:58,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:02:58,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3412 transitions. [2023-09-01 08:02:58,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491076568796776 [2023-09-01 08:02:58,999 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3412 transitions. [2023-09-01 08:02:58,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3412 transitions. [2023-09-01 08:02:59,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:02:59,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3412 transitions. [2023-09-01 08:02:59,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 284.3333333333333) internal successors, (3412), 12 states have internal predecessors, (3412), 0 states have call successors, (0), 0 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 08:02:59,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 579.0) internal successors, (7527), 13 states have internal predecessors, (7527), 0 states have call successors, (0), 0 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 08:02:59,021 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 579.0) internal successors, (7527), 13 states have internal predecessors, (7527), 0 states have call successors, (0), 0 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 08:02:59,021 INFO L175 Difference]: Start difference. First operand has 67 places, 70 transitions, 229 flow. Second operand 12 states and 3412 transitions. [2023-09-01 08:02:59,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 588 transitions, 2657 flow [2023-09-01 08:02:59,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 588 transitions, 2645 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:02:59,031 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 443 flow [2023-09-01 08:02:59,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=443, PETRI_PLACES=83, PETRI_TRANSITIONS=88} [2023-09-01 08:02:59,034 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 15 predicate places. [2023-09-01 08:02:59,035 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 443 flow [2023-09-01 08:02:59,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 237.15384615384616) internal successors, (3083), 13 states have internal predecessors, (3083), 0 states have call successors, (0), 0 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 08:02:59,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:02:59,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:02:59,050 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 08:02:59,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:02:59,250 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-09-01 08:02:59,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:02:59,251 INFO L85 PathProgramCache]: Analyzing trace with hash -2025765732, now seen corresponding path program 1 times [2023-09-01 08:02:59,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:02:59,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015348365] [2023-09-01 08:02:59,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:02:59,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:02:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:02:59,350 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 08:02:59,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:02:59,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015348365] [2023-09-01 08:02:59,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015348365] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:02:59,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:02:59,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 08:02:59,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013077161] [2023-09-01 08:02:59,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:02:59,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:02:59,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:02:59,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:02:59,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:02:59,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 579 [2023-09-01 08:02:59,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 88 transitions, 443 flow. Second operand has 5 states, 5 states have (on average 230.6) internal successors, (1153), 5 states have internal predecessors, (1153), 0 states have call successors, (0), 0 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 08:02:59,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:02:59,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 579 [2023-09-01 08:02:59,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:03:31,992 INFO L130 PetriNetUnfolder]: 259271/352729 cut-off events. [2023-09-01 08:03:31,993 INFO L131 PetriNetUnfolder]: For 14252/14252 co-relation queries the response was YES. [2023-09-01 08:03:33,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730692 conditions, 352729 events. 259271/352729 cut-off events. For 14252/14252 co-relation queries the response was YES. Maximal size of possible extension queue 12334. Compared 2632155 event pairs, 205557 based on Foata normal form. 11/136117 useless extension candidates. Maximal degree in co-relation 597791. Up to 352397 conditions per place. [2023-09-01 08:03:34,403 INFO L137 encePairwiseOnDemand]: 574/579 looper letters, 94 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2023-09-01 08:03:34,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 100 transitions, 761 flow [2023-09-01 08:03:34,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:03:34,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:03:34,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1207 transitions. [2023-09-01 08:03:34,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4169257340241796 [2023-09-01 08:03:34,407 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1207 transitions. [2023-09-01 08:03:34,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1207 transitions. [2023-09-01 08:03:34,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:03:34,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1207 transitions. [2023-09-01 08:03:34,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 241.4) internal successors, (1207), 5 states have internal predecessors, (1207), 0 states have call successors, (0), 0 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 08:03:34,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 579.0) internal successors, (3474), 6 states have internal predecessors, (3474), 0 states have call successors, (0), 0 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 08:03:34,414 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 579.0) internal successors, (3474), 6 states have internal predecessors, (3474), 0 states have call successors, (0), 0 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 08:03:34,414 INFO L175 Difference]: Start difference. First operand has 83 places, 88 transitions, 443 flow. Second operand 5 states and 1207 transitions. [2023-09-01 08:03:34,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 100 transitions, 761 flow [2023-09-01 08:03:34,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 100 transitions, 637 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-09-01 08:03:34,430 INFO L231 Difference]: Finished difference. Result has 84 places, 89 transitions, 376 flow [2023-09-01 08:03:34,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=376, PETRI_PLACES=84, PETRI_TRANSITIONS=89} [2023-09-01 08:03:34,431 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 16 predicate places. [2023-09-01 08:03:34,431 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 89 transitions, 376 flow [2023-09-01 08:03:34,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 230.6) internal successors, (1153), 5 states have internal predecessors, (1153), 0 states have call successors, (0), 0 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 08:03:34,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:03:34,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:03:34,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 08:03:34,432 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-09-01 08:03:34,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:03:34,433 INFO L85 PathProgramCache]: Analyzing trace with hash 2028978780, now seen corresponding path program 1 times [2023-09-01 08:03:34,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:03:34,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455005998] [2023-09-01 08:03:34,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:34,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:03:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:34,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:03:34,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:03:34,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455005998] [2023-09-01 08:03:34,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455005998] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:03:34,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:03:34,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:03:34,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65069011] [2023-09-01 08:03:34,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:03:34,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:03:34,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:03:34,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:03:34,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:03:34,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 579 [2023-09-01 08:03:34,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 89 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 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 08:03:34,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:03:34,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 579 [2023-09-01 08:03:34,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand