./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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 ../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:51:17,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:51:17,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:51:17,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:51:17,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:51:17,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:51:17,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:51:17,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:51:17,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:51:17,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:51:17,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:51:17,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:51:17,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:51:17,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:51:17,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:51:17,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:51:17,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:51:17,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:51:17,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:51:17,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:51:17,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:51:17,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:51:17,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:51:17,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:51:17,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:51:17,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:51:17,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:51:17,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:51:17,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:51:17,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:51:17,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:51:17,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:51:17,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:51:17,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:51:17,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:51:17,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:51:17,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:51:17,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:51:17,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:51:17,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:51:17,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:51:17,811 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 13:51:17,825 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:51:17,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:51:17,825 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:51:17,826 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:51:17,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:51:17,826 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:51:17,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:51:17,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:51:17,827 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:51:17,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:51:17,827 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 13:51:17,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:51:17,828 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 13:51:17,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:51:17,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:51:17,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:51:17,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:51:17,829 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 13:51:17,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:51:17,829 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:51:17,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:51:17,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:51:17,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:51:17,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:51:17,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:51:17,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:51:17,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:51:17,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:51:17,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:51:17,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:51:17,831 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:51:17,831 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:51:17,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:51:17,832 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:51:17,832 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 [2021-12-22 13:51:18,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:51:18,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:51:18,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:51:18,029 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:51:18,030 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:51:18,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2021-12-22 13:51:18,077 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20538f4f3/3bda089665d94fe3a2ec3090ed2aac3c/FLAG3f5f577d0 [2021-12-22 13:51:18,525 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:51:18,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2021-12-22 13:51:18,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20538f4f3/3bda089665d94fe3a2ec3090ed2aac3c/FLAG3f5f577d0 [2021-12-22 13:51:18,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20538f4f3/3bda089665d94fe3a2ec3090ed2aac3c [2021-12-22 13:51:18,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:51:18,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:51:18,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:51:18,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:51:18,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:51:18,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:51:18" (1/1) ... [2021-12-22 13:51:18,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2271ff41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:51:18, skipping insertion in model container [2021-12-22 13:51:18,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:51:18" (1/1) ... [2021-12-22 13:51:18,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:51:18,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:51:19,034 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2021-12-22 13:51:19,037 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:51:19,055 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:51:19,096 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2021-12-22 13:51:19,100 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:51:19,136 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:51:19,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:51:19 WrapperNode [2021-12-22 13:51:19,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:51:19,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:51:19,139 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:51:19,139 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:51:19,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:51:19" (1/1) ... [2021-12-22 13:51:19,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:51:19" (1/1) ... [2021-12-22 13:51:19,203 INFO L137 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2021-12-22 13:51:19,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:51:19,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:51:19,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:51:19,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:51:19,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:51:19" (1/1) ... [2021-12-22 13:51:19,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:51:19" (1/1) ... [2021-12-22 13:51:19,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:51:19" (1/1) ... [2021-12-22 13:51:19,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:51:19" (1/1) ... [2021-12-22 13:51:19,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:51:19" (1/1) ... [2021-12-22 13:51:19,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:51:19" (1/1) ... [2021-12-22 13:51:19,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:51:19" (1/1) ... [2021-12-22 13:51:19,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:51:19,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:51:19,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:51:19,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:51:19,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:51:19" (1/1) ... [2021-12-22 13:51:19,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:51:19,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:51:19,284 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) [2021-12-22 13:51:19,298 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 [2021-12-22 13:51:19,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 13:51:19,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 13:51:19,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 13:51:19,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 13:51:19,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-22 13:51:19,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-22 13:51:19,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-22 13:51:19,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-22 13:51:19,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 13:51:19,313 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-12-22 13:51:19,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:51:19,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:51:19,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:51:19,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:51:19,315 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-22 13:51:19,387 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:51:19,388 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:51:19,587 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:51:19,593 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:51:19,594 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-22 13:51:19,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:51:19 BoogieIcfgContainer [2021-12-22 13:51:19,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:51:19,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:51:19,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:51:19,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:51:19,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:51:18" (1/3) ... [2021-12-22 13:51:19,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e405d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:51:19, skipping insertion in model container [2021-12-22 13:51:19,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:51:19" (2/3) ... [2021-12-22 13:51:19,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e405d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:51:19, skipping insertion in model container [2021-12-22 13:51:19,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:51:19" (3/3) ... [2021-12-22 13:51:19,612 INFO L111 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2021-12-22 13:51:19,616 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-22 13:51:19,616 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:51:19,616 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 13:51:19,616 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-22 13:51:19,657 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,657 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,658 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,658 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,658 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,658 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,659 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,659 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,659 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,659 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,660 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,660 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,660 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,660 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,661 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,661 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,661 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,662 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,662 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,662 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,663 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,663 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,664 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,664 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,665 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,666 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,666 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,667 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,667 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,667 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,668 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,668 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,668 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,668 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,668 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,668 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,669 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,669 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,669 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,669 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,670 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,671 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,671 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,672 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,672 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,672 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,672 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,672 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,672 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,673 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,673 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,673 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,673 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,673 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,674 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,674 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,677 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,677 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,679 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,680 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,680 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,681 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,681 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,681 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,681 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,683 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,683 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,684 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,684 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,685 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,685 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,685 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,686 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,686 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,686 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,687 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,687 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,688 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,690 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,690 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,690 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,690 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,691 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,691 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,691 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,691 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,692 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,695 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,695 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,706 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,706 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,706 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,707 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,707 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,707 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,708 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,708 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,709 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,711 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,711 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,711 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,711 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,712 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,712 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,712 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,712 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,712 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:51:19,719 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-22 13:51:19,750 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:51:19,757 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 13:51:19,757 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-22 13:51:19,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 135 transitions, 286 flow [2021-12-22 13:51:19,808 INFO L129 PetriNetUnfolder]: 10/133 cut-off events. [2021-12-22 13:51:19,808 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-22 13:51:19,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 133 events. 10/133 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 140 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 85. Up to 3 conditions per place. [2021-12-22 13:51:19,812 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 135 transitions, 286 flow [2021-12-22 13:51:19,817 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 121 transitions, 254 flow [2021-12-22 13:51:19,841 INFO L129 PetriNetUnfolder]: 8/120 cut-off events. [2021-12-22 13:51:19,845 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-22 13:51:19,846 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:51:19,846 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:51:19,847 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:51:19,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:51:19,852 INFO L85 PathProgramCache]: Analyzing trace with hash 546892702, now seen corresponding path program 1 times [2021-12-22 13:51:19,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:51:19,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080034470] [2021-12-22 13:51:19,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:51:19,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:51:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:51:20,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:51:20,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:51:20,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080034470] [2021-12-22 13:51:20,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080034470] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:51:20,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:51:20,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 13:51:20,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633089357] [2021-12-22 13:51:20,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:51:20,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 13:51:20,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:51:20,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 13:51:20,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 13:51:20,072 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 135 [2021-12-22 13:51:20,075 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 121 transitions, 254 flow. Second operand has 2 states, 2 states have (on average 128.0) internal successors, (256), 2 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:20,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:51:20,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 135 [2021-12-22 13:51:20,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:51:20,118 INFO L129 PetriNetUnfolder]: 4/117 cut-off events. [2021-12-22 13:51:20,119 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-12-22 13:51:20,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 117 events. 4/117 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 130 event pairs, 0 based on Foata normal form. 7/120 useless extension candidates. Maximal degree in co-relation 84. Up to 5 conditions per place. [2021-12-22 13:51:20,121 INFO L132 encePairwiseOnDemand]: 131/135 looper letters, 4 selfloop transitions, 0 changer transitions 0/117 dead transitions. [2021-12-22 13:51:20,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 117 transitions, 254 flow [2021-12-22 13:51:20,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 13:51:20,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-22 13:51:20,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 258 transitions. [2021-12-22 13:51:20,138 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9555555555555556 [2021-12-22 13:51:20,138 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 258 transitions. [2021-12-22 13:51:20,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 258 transitions. [2021-12-22 13:51:20,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:51:20,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 258 transitions. [2021-12-22 13:51:20,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 129.0) internal successors, (258), 2 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:20,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:20,153 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:20,154 INFO L186 Difference]: Start difference. First operand has 120 places, 121 transitions, 254 flow. Second operand 2 states and 258 transitions. [2021-12-22 13:51:20,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 117 transitions, 254 flow [2021-12-22 13:51:20,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 117 transitions, 246 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-22 13:51:20,161 INFO L242 Difference]: Finished difference. Result has 117 places, 117 transitions, 238 flow [2021-12-22 13:51:20,162 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=238, PETRI_PLACES=117, PETRI_TRANSITIONS=117} [2021-12-22 13:51:20,165 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, -3 predicate places. [2021-12-22 13:51:20,165 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 117 transitions, 238 flow [2021-12-22 13:51:20,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 128.0) internal successors, (256), 2 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:20,166 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:51:20,166 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:51:20,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 13:51:20,167 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:51:20,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:51:20,167 INFO L85 PathProgramCache]: Analyzing trace with hash -494092674, now seen corresponding path program 1 times [2021-12-22 13:51:20,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:51:20,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955382360] [2021-12-22 13:51:20,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:51:20,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:51:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:51:20,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:51:20,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:51:20,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955382360] [2021-12-22 13:51:20,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955382360] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:51:20,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:51:20,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:51:20,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400823064] [2021-12-22 13:51:20,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:51:20,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:51:20,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:51:20,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:51:20,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:51:20,277 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 135 [2021-12-22 13:51:20,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 117 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:20,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:51:20,280 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 135 [2021-12-22 13:51:20,280 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:51:20,322 INFO L129 PetriNetUnfolder]: 18/200 cut-off events. [2021-12-22 13:51:20,324 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-22 13:51:20,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 200 events. 18/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 549 event pairs, 3 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 240. Up to 22 conditions per place. [2021-12-22 13:51:20,326 INFO L132 encePairwiseOnDemand]: 132/135 looper letters, 12 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2021-12-22 13:51:20,327 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 121 transitions, 275 flow [2021-12-22 13:51:20,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:51:20,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-22 13:51:20,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2021-12-22 13:51:20,332 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9185185185185185 [2021-12-22 13:51:20,332 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2021-12-22 13:51:20,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2021-12-22 13:51:20,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:51:20,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2021-12-22 13:51:20,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:20,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:20,335 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:20,335 INFO L186 Difference]: Start difference. First operand has 117 places, 117 transitions, 238 flow. Second operand 3 states and 372 transitions. [2021-12-22 13:51:20,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 121 transitions, 275 flow [2021-12-22 13:51:20,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 121 transitions, 275 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-22 13:51:20,339 INFO L242 Difference]: Finished difference. Result has 120 places, 118 transitions, 250 flow [2021-12-22 13:51:20,340 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=120, PETRI_TRANSITIONS=118} [2021-12-22 13:51:20,340 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 0 predicate places. [2021-12-22 13:51:20,340 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 118 transitions, 250 flow [2021-12-22 13:51:20,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:20,341 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:51:20,342 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:51:20,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 13:51:20,342 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:51:20,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:51:20,343 INFO L85 PathProgramCache]: Analyzing trace with hash -963664370, now seen corresponding path program 1 times [2021-12-22 13:51:20,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:51:20,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397328044] [2021-12-22 13:51:20,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:51:20,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:51:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:51:20,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:51:20,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:51:20,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397328044] [2021-12-22 13:51:20,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397328044] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:51:20,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633426665] [2021-12-22 13:51:20,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:51:20,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:51:20,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:51:20,478 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) [2021-12-22 13:51:20,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 13:51:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:51:20,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 13:51:20,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:51:20,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 13:51:20,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:51:20,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633426665] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:51:20,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:51:20,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-12-22 13:51:20,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401774492] [2021-12-22 13:51:20,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:51:20,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:51:20,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:51:20,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:51:20,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:51:20,788 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 135 [2021-12-22 13:51:20,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 118 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:20,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:51:20,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 135 [2021-12-22 13:51:20,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:51:20,835 INFO L129 PetriNetUnfolder]: 20/195 cut-off events. [2021-12-22 13:51:20,835 INFO L130 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2021-12-22 13:51:20,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 195 events. 20/195 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 547 event pairs, 7 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 241. Up to 28 conditions per place. [2021-12-22 13:51:20,845 INFO L132 encePairwiseOnDemand]: 132/135 looper letters, 15 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2021-12-22 13:51:20,845 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 123 transitions, 295 flow [2021-12-22 13:51:20,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:51:20,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-22 13:51:20,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2021-12-22 13:51:20,847 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9111111111111111 [2021-12-22 13:51:20,847 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2021-12-22 13:51:20,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2021-12-22 13:51:20,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:51:20,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2021-12-22 13:51:20,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:20,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:20,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:20,850 INFO L186 Difference]: Start difference. First operand has 120 places, 118 transitions, 250 flow. Second operand 3 states and 369 transitions. [2021-12-22 13:51:20,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 123 transitions, 295 flow [2021-12-22 13:51:20,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 123 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-22 13:51:20,853 INFO L242 Difference]: Finished difference. Result has 122 places, 119 transitions, 260 flow [2021-12-22 13:51:20,853 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=122, PETRI_TRANSITIONS=119} [2021-12-22 13:51:20,854 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 2 predicate places. [2021-12-22 13:51:20,854 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 119 transitions, 260 flow [2021-12-22 13:51:20,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:20,854 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:51:20,855 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:51:20,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-22 13:51:21,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:51:21,061 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:51:21,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:51:21,062 INFO L85 PathProgramCache]: Analyzing trace with hash -786293827, now seen corresponding path program 1 times [2021-12-22 13:51:21,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:51:21,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559193685] [2021-12-22 13:51:21,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:51:21,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:51:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:51:21,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 13:51:21,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:51:21,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559193685] [2021-12-22 13:51:21,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559193685] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:51:21,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382014888] [2021-12-22 13:51:21,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:51:21,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:51:21,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:51:21,172 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) [2021-12-22 13:51:21,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 13:51:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:51:21,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 13:51:21,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:51:21,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 13:51:21,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 13:51:21,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 13:51:21,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382014888] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 13:51:21,578 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 13:51:21,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-12-22 13:51:21,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493586280] [2021-12-22 13:51:21,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 13:51:21,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 13:51:21,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:51:21,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 13:51:21,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-22 13:51:21,580 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 135 [2021-12-22 13:51:21,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 119 transitions, 260 flow. Second operand has 9 states, 9 states have (on average 120.33333333333333) internal successors, (1083), 9 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:21,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:51:21,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 135 [2021-12-22 13:51:21,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:51:21,657 INFO L129 PetriNetUnfolder]: 26/229 cut-off events. [2021-12-22 13:51:21,657 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-22 13:51:21,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 229 events. 26/229 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 540 event pairs, 4 based on Foata normal form. 4/223 useless extension candidates. Maximal degree in co-relation 312. Up to 17 conditions per place. [2021-12-22 13:51:21,659 INFO L132 encePairwiseOnDemand]: 129/135 looper letters, 18 selfloop transitions, 9 changer transitions 0/134 dead transitions. [2021-12-22 13:51:21,659 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 134 transitions, 353 flow [2021-12-22 13:51:21,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 13:51:21,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-22 13:51:21,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1091 transitions. [2021-12-22 13:51:21,662 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8979423868312757 [2021-12-22 13:51:21,662 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1091 transitions. [2021-12-22 13:51:21,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1091 transitions. [2021-12-22 13:51:21,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:51:21,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1091 transitions. [2021-12-22 13:51:21,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 121.22222222222223) internal successors, (1091), 9 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:21,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:21,667 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:21,667 INFO L186 Difference]: Start difference. First operand has 122 places, 119 transitions, 260 flow. Second operand 9 states and 1091 transitions. [2021-12-22 13:51:21,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 134 transitions, 353 flow [2021-12-22 13:51:21,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 134 transitions, 351 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-22 13:51:21,670 INFO L242 Difference]: Finished difference. Result has 132 places, 125 transitions, 308 flow [2021-12-22 13:51:21,670 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=308, PETRI_PLACES=132, PETRI_TRANSITIONS=125} [2021-12-22 13:51:21,671 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 12 predicate places. [2021-12-22 13:51:21,671 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 125 transitions, 308 flow [2021-12-22 13:51:21,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 120.33333333333333) internal successors, (1083), 9 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:21,672 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:51:21,672 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:51:21,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 13:51:21,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-22 13:51:21,891 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:51:21,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:51:21,892 INFO L85 PathProgramCache]: Analyzing trace with hash 211684319, now seen corresponding path program 2 times [2021-12-22 13:51:21,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:51:21,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241731526] [2021-12-22 13:51:21,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:51:21,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:51:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:51:21,956 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-22 13:51:21,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:51:21,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241731526] [2021-12-22 13:51:21,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241731526] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:51:21,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511513939] [2021-12-22 13:51:21,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 13:51:21,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:51:21,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:51:21,958 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) [2021-12-22 13:51:21,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 13:51:22,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 13:51:22,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 13:51:22,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 13:51:22,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:51:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-22 13:51:22,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:51:22,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511513939] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:51:22,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:51:22,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-12-22 13:51:22,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179333704] [2021-12-22 13:51:22,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:51:22,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 13:51:22,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:51:22,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 13:51:22,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:51:22,194 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 135 [2021-12-22 13:51:22,195 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 125 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:22,195 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:51:22,195 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 135 [2021-12-22 13:51:22,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:51:22,370 INFO L129 PetriNetUnfolder]: 307/1229 cut-off events. [2021-12-22 13:51:22,370 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2021-12-22 13:51:22,374 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1950 conditions, 1229 events. 307/1229 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7018 event pairs, 41 based on Foata normal form. 0/1117 useless extension candidates. Maximal degree in co-relation 1942. Up to 186 conditions per place. [2021-12-22 13:51:22,379 INFO L132 encePairwiseOnDemand]: 126/135 looper letters, 32 selfloop transitions, 18 changer transitions 0/160 dead transitions. [2021-12-22 13:51:22,380 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 160 transitions, 484 flow [2021-12-22 13:51:22,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 13:51:22,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-22 13:51:22,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 851 transitions. [2021-12-22 13:51:22,382 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9005291005291005 [2021-12-22 13:51:22,382 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 851 transitions. [2021-12-22 13:51:22,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 851 transitions. [2021-12-22 13:51:22,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:51:22,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 851 transitions. [2021-12-22 13:51:22,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 121.57142857142857) internal successors, (851), 7 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:22,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 135.0) internal successors, (1080), 8 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:22,387 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 135.0) internal successors, (1080), 8 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:22,387 INFO L186 Difference]: Start difference. First operand has 132 places, 125 transitions, 308 flow. Second operand 7 states and 851 transitions. [2021-12-22 13:51:22,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 160 transitions, 484 flow [2021-12-22 13:51:22,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 160 transitions, 478 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-12-22 13:51:22,394 INFO L242 Difference]: Finished difference. Result has 143 places, 143 transitions, 442 flow [2021-12-22 13:51:22,394 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=442, PETRI_PLACES=143, PETRI_TRANSITIONS=143} [2021-12-22 13:51:22,396 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 23 predicate places. [2021-12-22 13:51:22,396 INFO L470 AbstractCegarLoop]: Abstraction has has 143 places, 143 transitions, 442 flow [2021-12-22 13:51:22,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:22,397 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:51:22,397 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:51:22,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 13:51:22,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:51:22,611 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:51:22,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:51:22,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1479845303, now seen corresponding path program 3 times [2021-12-22 13:51:22,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:51:22,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516708850] [2021-12-22 13:51:22,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:51:22,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:51:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:51:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-22 13:51:22,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:51:22,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516708850] [2021-12-22 13:51:22,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516708850] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:51:22,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677862170] [2021-12-22 13:51:22,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 13:51:22,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:51:22,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:51:22,680 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) [2021-12-22 13:51:22,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 13:51:22,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-22 13:51:22,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 13:51:22,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 13:51:22,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:51:22,988 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-22 13:51:22,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:51:22,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677862170] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:51:22,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:51:22,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2021-12-22 13:51:22,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332095415] [2021-12-22 13:51:22,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:51:22,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:51:22,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:51:22,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:51:22,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-22 13:51:22,990 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 135 [2021-12-22 13:51:22,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 143 transitions, 442 flow. Second operand has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:22,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:51:22,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 135 [2021-12-22 13:51:22,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:51:23,161 INFO L129 PetriNetUnfolder]: 325/1306 cut-off events. [2021-12-22 13:51:23,161 INFO L130 PetriNetUnfolder]: For 1252/1377 co-relation queries the response was YES. [2021-12-22 13:51:23,166 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3013 conditions, 1306 events. 325/1306 cut-off events. For 1252/1377 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 7155 event pairs, 12 based on Foata normal form. 90/1392 useless extension candidates. Maximal degree in co-relation 2999. Up to 159 conditions per place. [2021-12-22 13:51:23,171 INFO L132 encePairwiseOnDemand]: 124/135 looper letters, 33 selfloop transitions, 44 changer transitions 0/186 dead transitions. [2021-12-22 13:51:23,171 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 186 transitions, 809 flow [2021-12-22 13:51:23,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 13:51:23,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-22 13:51:23,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1179 transitions. [2021-12-22 13:51:23,173 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8733333333333333 [2021-12-22 13:51:23,174 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1179 transitions. [2021-12-22 13:51:23,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1179 transitions. [2021-12-22 13:51:23,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:51:23,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1179 transitions. [2021-12-22 13:51:23,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 117.9) internal successors, (1179), 10 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:23,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:23,178 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:23,178 INFO L186 Difference]: Start difference. First operand has 143 places, 143 transitions, 442 flow. Second operand 10 states and 1179 transitions. [2021-12-22 13:51:23,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 186 transitions, 809 flow [2021-12-22 13:51:23,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 186 transitions, 809 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-22 13:51:23,184 INFO L242 Difference]: Finished difference. Result has 159 places, 169 transitions, 765 flow [2021-12-22 13:51:23,185 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=765, PETRI_PLACES=159, PETRI_TRANSITIONS=169} [2021-12-22 13:51:23,185 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 39 predicate places. [2021-12-22 13:51:23,185 INFO L470 AbstractCegarLoop]: Abstraction has has 159 places, 169 transitions, 765 flow [2021-12-22 13:51:23,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:23,186 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:51:23,186 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:51:23,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 13:51:23,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:51:23,404 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:51:23,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:51:23,405 INFO L85 PathProgramCache]: Analyzing trace with hash 186061792, now seen corresponding path program 4 times [2021-12-22 13:51:23,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:51:23,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153464768] [2021-12-22 13:51:23,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:51:23,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:51:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:51:23,438 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-22 13:51:23,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:51:23,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153464768] [2021-12-22 13:51:23,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153464768] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:51:23,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:51:23,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:51:23,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877245482] [2021-12-22 13:51:23,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:51:23,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:51:23,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:51:23,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:51:23,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:51:23,441 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 135 [2021-12-22 13:51:23,441 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 169 transitions, 765 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:23,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:51:23,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 135 [2021-12-22 13:51:23,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:51:23,588 INFO L129 PetriNetUnfolder]: 78/626 cut-off events. [2021-12-22 13:51:23,588 INFO L130 PetriNetUnfolder]: For 563/563 co-relation queries the response was YES. [2021-12-22 13:51:23,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1438 conditions, 626 events. 78/626 cut-off events. For 563/563 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2554 event pairs, 6 based on Foata normal form. 61/687 useless extension candidates. Maximal degree in co-relation 1416. Up to 90 conditions per place. [2021-12-22 13:51:23,592 INFO L132 encePairwiseOnDemand]: 127/135 looper letters, 16 selfloop transitions, 8 changer transitions 0/137 dead transitions. [2021-12-22 13:51:23,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 137 transitions, 525 flow [2021-12-22 13:51:23,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:51:23,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-22 13:51:23,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2021-12-22 13:51:23,594 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8617283950617284 [2021-12-22 13:51:23,594 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2021-12-22 13:51:23,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2021-12-22 13:51:23,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:51:23,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2021-12-22 13:51:23,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:23,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:23,597 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:23,597 INFO L186 Difference]: Start difference. First operand has 159 places, 169 transitions, 765 flow. Second operand 3 states and 349 transitions. [2021-12-22 13:51:23,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 137 transitions, 525 flow [2021-12-22 13:51:23,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 137 transitions, 463 flow, removed 12 selfloop flow, removed 12 redundant places. [2021-12-22 13:51:23,602 INFO L242 Difference]: Finished difference. Result has 146 places, 135 transitions, 425 flow [2021-12-22 13:51:23,602 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=425, PETRI_PLACES=146, PETRI_TRANSITIONS=135} [2021-12-22 13:51:23,602 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 26 predicate places. [2021-12-22 13:51:23,602 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 135 transitions, 425 flow [2021-12-22 13:51:23,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:23,603 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:51:23,603 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:51:23,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 13:51:23,603 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:51:23,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:51:23,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1561621710, now seen corresponding path program 5 times [2021-12-22 13:51:23,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:51:23,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977446917] [2021-12-22 13:51:23,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:51:23,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:51:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:51:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 21 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 13:51:23,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:51:23,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977446917] [2021-12-22 13:51:23,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977446917] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:51:23,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269126486] [2021-12-22 13:51:23,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-22 13:51:23,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:51:23,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:51:23,700 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:51:23,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 13:51:23,794 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-12-22 13:51:23,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 13:51:23,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 13:51:23,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:51:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 21 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 13:51:23,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 13:51:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 21 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 13:51:24,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269126486] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 13:51:24,037 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 13:51:24,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2021-12-22 13:51:24,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892519454] [2021-12-22 13:51:24,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 13:51:24,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 13:51:24,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:51:24,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 13:51:24,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-22 13:51:24,039 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 135 [2021-12-22 13:51:24,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 135 transitions, 425 flow. Second operand has 9 states, 9 states have (on average 118.55555555555556) internal successors, (1067), 9 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:24,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:51:24,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 135 [2021-12-22 13:51:24,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:51:24,171 INFO L129 PetriNetUnfolder]: 117/877 cut-off events. [2021-12-22 13:51:24,171 INFO L130 PetriNetUnfolder]: For 369/369 co-relation queries the response was YES. [2021-12-22 13:51:24,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 877 events. 117/877 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4446 event pairs, 5 based on Foata normal form. 11/881 useless extension candidates. Maximal degree in co-relation 1767. Up to 114 conditions per place. [2021-12-22 13:51:24,176 INFO L132 encePairwiseOnDemand]: 129/135 looper letters, 19 selfloop transitions, 9 changer transitions 0/149 dead transitions. [2021-12-22 13:51:24,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 149 transitions, 515 flow [2021-12-22 13:51:24,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 13:51:24,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-22 13:51:24,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1074 transitions. [2021-12-22 13:51:24,179 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8839506172839506 [2021-12-22 13:51:24,179 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1074 transitions. [2021-12-22 13:51:24,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1074 transitions. [2021-12-22 13:51:24,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:51:24,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1074 transitions. [2021-12-22 13:51:24,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 119.33333333333333) internal successors, (1074), 9 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:24,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:24,183 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:24,183 INFO L186 Difference]: Start difference. First operand has 146 places, 135 transitions, 425 flow. Second operand 9 states and 1074 transitions. [2021-12-22 13:51:24,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 149 transitions, 515 flow [2021-12-22 13:51:24,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 149 transitions, 507 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-22 13:51:24,187 INFO L242 Difference]: Finished difference. Result has 156 places, 141 transitions, 467 flow [2021-12-22 13:51:24,187 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=467, PETRI_PLACES=156, PETRI_TRANSITIONS=141} [2021-12-22 13:51:24,189 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 36 predicate places. [2021-12-22 13:51:24,189 INFO L470 AbstractCegarLoop]: Abstraction has has 156 places, 141 transitions, 467 flow [2021-12-22 13:51:24,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 118.55555555555556) internal successors, (1067), 9 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:51:24,190 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:51:24,190 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:51:24,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 13:51:24,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:51:24,408 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:51:24,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:51:24,409 INFO L85 PathProgramCache]: Analyzing trace with hash 459318713, now seen corresponding path program 6 times [2021-12-22 13:51:24,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:51:24,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725384935] [2021-12-22 13:51:24,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:51:24,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:51:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 13:51:24,457 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 13:51:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 13:51:24,521 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 13:51:24,521 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 13:51:24,522 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-12-22 13:51:24,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-12-22 13:51:24,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-12-22 13:51:24,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 13:51:24,526 INFO L732 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1] [2021-12-22 13:51:24,529 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-22 13:51:24,529 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 13:51:24,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 01:51:24 BasicIcfg [2021-12-22 13:51:24,615 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 13:51:24,615 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 13:51:24,615 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 13:51:24,616 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 13:51:24,616 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:51:19" (3/4) ... [2021-12-22 13:51:24,617 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-22 13:51:24,690 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 13:51:24,690 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 13:51:24,691 INFO L158 Benchmark]: Toolchain (without parser) took 6129.09ms. Allocated memory was 134.2MB in the beginning and 205.5MB in the end (delta: 71.3MB). Free memory was 101.9MB in the beginning and 73.1MB in the end (delta: 28.8MB). Peak memory consumption was 100.2MB. Max. memory is 16.1GB. [2021-12-22 13:51:24,691 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory was 39.8MB in the beginning and 39.7MB in the end (delta: 37.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 13:51:24,691 INFO L158 Benchmark]: CACSL2BoogieTranslator took 575.28ms. Allocated memory is still 134.2MB. Free memory was 101.6MB in the beginning and 93.9MB in the end (delta: 7.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 13:51:24,691 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.14ms. Allocated memory is still 134.2MB. Free memory was 93.9MB in the beginning and 91.2MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-22 13:51:24,692 INFO L158 Benchmark]: Boogie Preprocessor took 33.65ms. Allocated memory is still 134.2MB. Free memory was 91.2MB in the beginning and 89.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 13:51:24,692 INFO L158 Benchmark]: RCFGBuilder took 351.49ms. Allocated memory is still 134.2MB. Free memory was 89.7MB in the beginning and 75.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-22 13:51:24,692 INFO L158 Benchmark]: TraceAbstraction took 5017.75ms. Allocated memory was 134.2MB in the beginning and 205.5MB in the end (delta: 71.3MB). Free memory was 74.4MB in the beginning and 97.2MB in the end (delta: -22.7MB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB. [2021-12-22 13:51:24,692 INFO L158 Benchmark]: Witness Printer took 74.89ms. Allocated memory is still 205.5MB. Free memory was 97.2MB in the beginning and 73.1MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-22 13:51:24,694 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory was 39.8MB in the beginning and 39.7MB in the end (delta: 37.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 575.28ms. Allocated memory is still 134.2MB. Free memory was 101.6MB in the beginning and 93.9MB in the end (delta: 7.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.14ms. Allocated memory is still 134.2MB. Free memory was 93.9MB in the beginning and 91.2MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.65ms. Allocated memory is still 134.2MB. Free memory was 91.2MB in the beginning and 89.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 351.49ms. Allocated memory is still 134.2MB. Free memory was 89.7MB in the beginning and 75.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5017.75ms. Allocated memory was 134.2MB in the beginning and 205.5MB in the end (delta: 71.3MB). Free memory was 74.4MB in the beginning and 97.2MB in the end (delta: -22.7MB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB. * Witness Printer took 74.89ms. Allocated memory is still 205.5MB. Free memory was 97.2MB in the beginning and 73.1MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 919]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L870] 0 int num; VAL [num=0] [L871] 0 unsigned long total; VAL [num=0, total=0] [L872] 0 int flag; VAL [flag=0, num=0, total=0] [L873] 0 pthread_mutex_t m; VAL [flag=0, m={3:0}, num=0, total=0] [L874] 0 pthread_cond_t empty, full; VAL [empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, total=0] [L907] 0 pthread_t t1, t2; VAL [empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=0] [L908] 0 num = 0 VAL [empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=0] [L909] 0 total = 0 VAL [empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=0] [L913] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, pthread_create(&t1, 0, thread1, 0)=-2, t1={7:0}, t2={6:0}, total=0] [L876] 1 int i; VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, total=0] [L877] 1 i = 0 VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, m={3:0}, num=1, total=0] [L878] COND TRUE 1 i < 3 VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, m={3:0}, num=1, total=0] [L914] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, m={3:0}, num=1, pthread_create(&t2, 0, thread2, 0)=-1, t1={7:0}, t2={6:0}, total=0] [L890] 2 int j; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, m={3:0}, num=1, total=0] [L891] 2 j = 0 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L894] COND FALSE 2 !(num == 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=0, total=0] [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=0, total=0] [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L892] COND TRUE 2 j < 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=1, total=0] [L894] COND FALSE 2 !(num == 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=1, total=0] [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=1, total=1] [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=1] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=0, total=1] [L878] COND TRUE 1 i < 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=0, total=1] [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=0, total=1] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=1] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=1, m={3:0}, num=1, total=1] [L878] COND FALSE 1 !(i < 3) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=1, m={3:0}, num=1, total=1] [L887] 1 return ((void *)0); VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=1, m={3:0}, num=1, total=1] [L915] 0 \read(t1) VAL [\read(t1)=-2, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=1, m={3:0}, num=1, t1={7:0}, t2={6:0}, total=1] [L915] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-2, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=1, m={3:0}, num=1, t1={7:0}, t2={6:0}, total=1] [L900] 2 j++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=1] [L892] COND TRUE 2 j < 3 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=1] [L894] COND FALSE 2 !(num == 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=1] [L896] 2 total = total + j VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=3] [L897] 2 num-- VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=0, total=3] [L900] 2 j++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=3] [L892] COND FALSE 2 !(j < 3) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=3] [L902] 2 total = total + j VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=6] [L903] 2 flag = 1 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, total=6] [L904] 2 return ((void *)0); VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, total=6] [L916] 0 \read(t2) VAL [\read(t2)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] [L916] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] [L917] COND TRUE 0 \read(flag) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] [L918] COND FALSE 0 !(total != ((3 * (3 + 1)) / 2)) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] [L919] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] - UnprovableResult [Line: 914]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 913]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 171 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.8s, OverallIterations: 9, TraceHistogramMax: 3, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 99 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 99 mSDsluCounter, 84 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 112 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 333 IncrementalHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 45 mSDtfsCounter, 333 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 911 GetRequests, 861 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=765occurred in iteration=6, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 1692 NumberOfCodeBlocks, 1692 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1774 ConstructedInterpolants, 0 QuantifiedInterpolants, 2538 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1630 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 272/356 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-22 13:51:24,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE