./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-deagle/reorder_c11_bad-30.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/reorder_c11_bad-30.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 8d7df89eaaa05ee1c4077455abbd501c07d86257ca2c037ce71ae27b3838effb --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 23:27:02,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 23:27:02,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 23:27:02,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 23:27:02,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 23:27:02,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 23:27:02,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 23:27:02,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 23:27:02,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 23:27:02,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 23:27:02,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 23:27:02,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 23:27:02,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 23:27:02,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 23:27:02,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 23:27:02,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 23:27:02,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 23:27:02,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 23:27:02,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 23:27:02,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 23:27:02,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 23:27:02,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 23:27:02,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 23:27:02,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 23:27:02,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 23:27:02,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 23:27:02,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 23:27:02,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 23:27:02,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 23:27:02,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 23:27:02,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 23:27:02,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 23:27:02,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 23:27:02,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 23:27:02,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 23:27:02,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 23:27:02,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 23:27:02,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 23:27:02,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 23:27:02,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 23:27:02,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 23:27:02,955 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 23:27:02,981 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 23:27:02,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 23:27:02,982 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 23:27:02,982 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 23:27:02,983 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 23:27:02,983 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 23:27:02,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 23:27:02,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 23:27:02,983 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 23:27:02,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 23:27:02,984 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 23:27:02,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 23:27:02,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 23:27:02,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 23:27:02,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 23:27:02,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 23:27:02,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 23:27:02,985 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 23:27:02,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 23:27:02,985 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 23:27:02,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 23:27:02,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 23:27:02,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 23:27:02,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 23:27:02,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 23:27:02,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 23:27:02,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 23:27:02,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 23:27:02,987 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 23:27:02,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 23:27:02,987 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 23:27:02,987 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 23:27:02,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 23:27:02,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 23:27:02,988 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d7df89eaaa05ee1c4077455abbd501c07d86257ca2c037ce71ae27b3838effb [2021-12-17 23:27:03,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 23:27:03,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 23:27:03,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 23:27:03,165 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 23:27:03,165 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 23:27:03,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-deagle/reorder_c11_bad-30.i [2021-12-17 23:27:03,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b288b5511/737127f1057e4d3f8a7c055eeb431da9/FLAGf7b02e850 [2021-12-17 23:27:03,633 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 23:27:03,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/reorder_c11_bad-30.i [2021-12-17 23:27:03,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b288b5511/737127f1057e4d3f8a7c055eeb431da9/FLAGf7b02e850 [2021-12-17 23:27:03,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b288b5511/737127f1057e4d3f8a7c055eeb431da9 [2021-12-17 23:27:03,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 23:27:03,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 23:27:03,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 23:27:03,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 23:27:03,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 23:27:03,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:27:03" (1/1) ... [2021-12-17 23:27:03,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b30a012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:27:03, skipping insertion in model container [2021-12-17 23:27:03,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:27:03" (1/1) ... [2021-12-17 23:27:03,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 23:27:03,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 23:27:03,909 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/reorder_c11_bad-30.i[30190,30203] [2021-12-17 23:27:03,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 23:27:03,932 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 23:27:03,980 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/reorder_c11_bad-30.i[30190,30203] [2021-12-17 23:27:03,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 23:27:04,010 INFO L208 MainTranslator]: Completed translation [2021-12-17 23:27:04,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:27:04 WrapperNode [2021-12-17 23:27:04,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 23:27:04,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 23:27:04,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 23:27:04,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 23:27:04,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:27:04" (1/1) ... [2021-12-17 23:27:04,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:27:04" (1/1) ... [2021-12-17 23:27:04,046 INFO L137 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 71 [2021-12-17 23:27:04,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 23:27:04,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 23:27:04,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 23:27:04,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 23:27:04,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:27:04" (1/1) ... [2021-12-17 23:27:04,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:27:04" (1/1) ... [2021-12-17 23:27:04,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:27:04" (1/1) ... [2021-12-17 23:27:04,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:27:04" (1/1) ... [2021-12-17 23:27:04,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:27:04" (1/1) ... [2021-12-17 23:27:04,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:27:04" (1/1) ... [2021-12-17 23:27:04,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:27:04" (1/1) ... [2021-12-17 23:27:04,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 23:27:04,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 23:27:04,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 23:27:04,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 23:27:04,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:27:04" (1/1) ... [2021-12-17 23:27:04,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 23:27:04,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:27:04,122 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) [2021-12-17 23:27:04,125 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 [2021-12-17 23:27:04,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 23:27:04,146 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2021-12-17 23:27:04,147 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2021-12-17 23:27:04,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 23:27:04,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-17 23:27:04,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 23:27:04,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 23:27:04,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 23:27:04,147 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2021-12-17 23:27:04,147 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2021-12-17 23:27:04,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 23:27:04,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-17 23:27:04,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 23:27:04,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 23:27:04,149 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-17 23:27:04,236 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 23:27:04,237 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 23:27:04,371 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 23:27:04,379 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 23:27:04,380 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-17 23:27:04,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:27:04 BoogieIcfgContainer [2021-12-17 23:27:04,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 23:27:04,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 23:27:04,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 23:27:04,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 23:27:04,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 11:27:03" (1/3) ... [2021-12-17 23:27:04,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a5daff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:27:04, skipping insertion in model container [2021-12-17 23:27:04,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:27:04" (2/3) ... [2021-12-17 23:27:04,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a5daff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:27:04, skipping insertion in model container [2021-12-17 23:27:04,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:27:04" (3/3) ... [2021-12-17 23:27:04,389 INFO L111 eAbstractionObserver]: Analyzing ICFG reorder_c11_bad-30.i [2021-12-17 23:27:04,395 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-17 23:27:04,395 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 23:27:04,396 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 23:27:04,396 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-17 23:27:04,428 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,428 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,429 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of1ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,429 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of1ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,429 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,429 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,429 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of1ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,429 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of1ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,430 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,430 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,430 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,430 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,430 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,431 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,431 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of1ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,431 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of1ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,431 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,431 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,431 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of1ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,431 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of1ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,432 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,432 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,432 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,432 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,434 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,435 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,435 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of1ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,435 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of1ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,437 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,438 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,438 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of1ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,438 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of1ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:04,441 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-12-17 23:27:04,472 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 23:27:04,476 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 [2021-12-17 23:27:04,477 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-17 23:27:04,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 91 transitions, 204 flow [2021-12-17 23:27:04,541 INFO L129 PetriNetUnfolder]: 24/202 cut-off events. [2021-12-17 23:27:04,541 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-12-17 23:27:04,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 202 events. 24/202 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 622 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 105. Up to 8 conditions per place. [2021-12-17 23:27:04,547 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 91 transitions, 204 flow [2021-12-17 23:27:04,551 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 89 transitions, 194 flow [2021-12-17 23:27:04,572 INFO L129 PetriNetUnfolder]: 5/66 cut-off events. [2021-12-17 23:27:04,574 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 23:27:04,574 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:27:04,575 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] [2021-12-17 23:27:04,576 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 23:27:04,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:27:04,582 INFO L85 PathProgramCache]: Analyzing trace with hash -211201094, now seen corresponding path program 1 times [2021-12-17 23:27:04,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:27:04,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214058828] [2021-12-17 23:27:04,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:27:04,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:27:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:27:04,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:27:04,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:27:04,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214058828] [2021-12-17 23:27:04,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214058828] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:27:04,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:27:04,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 23:27:04,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419146965] [2021-12-17 23:27:04,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:27:04,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 23:27:04,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:27:04,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 23:27:04,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 23:27:04,789 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 91 [2021-12-17 23:27:04,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 89 transitions, 194 flow. Second operand has 2 states, 2 states have (on average 80.0) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:04,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:27:04,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 91 [2021-12-17 23:27:04,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:27:04,835 INFO L129 PetriNetUnfolder]: 4/172 cut-off events. [2021-12-17 23:27:04,836 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-12-17 23:27:04,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 172 events. 4/172 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 542 event pairs, 0 based on Foata normal form. 18/174 useless extension candidates. Maximal degree in co-relation 104. Up to 8 conditions per place. [2021-12-17 23:27:04,838 INFO L132 encePairwiseOnDemand]: 86/91 looper letters, 4 selfloop transitions, 0 changer transitions 0/83 dead transitions. [2021-12-17 23:27:04,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 190 flow [2021-12-17 23:27:04,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 23:27:04,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-17 23:27:04,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 167 transitions. [2021-12-17 23:27:04,848 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9175824175824175 [2021-12-17 23:27:04,849 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 167 transitions. [2021-12-17 23:27:04,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 167 transitions. [2021-12-17 23:27:04,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:27:04,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 167 transitions. [2021-12-17 23:27:04,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:04,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:04,864 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:04,865 INFO L186 Difference]: Start difference. First operand has 87 places, 89 transitions, 194 flow. Second operand 2 states and 167 transitions. [2021-12-17 23:27:04,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 190 flow [2021-12-17 23:27:04,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 83 transitions, 190 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-17 23:27:04,871 INFO L242 Difference]: Finished difference. Result has 87 places, 83 transitions, 182 flow [2021-12-17 23:27:04,872 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=182, PETRI_PLACES=87, PETRI_TRANSITIONS=83} [2021-12-17 23:27:04,874 INFO L334 CegarLoopForPetriNet]: 87 programPoint places, 0 predicate places. [2021-12-17 23:27:04,875 INFO L470 AbstractCegarLoop]: Abstraction has has 87 places, 83 transitions, 182 flow [2021-12-17 23:27:04,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.0) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:04,876 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:27:04,876 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] [2021-12-17 23:27:04,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 23:27:04,876 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 23:27:04,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:27:04,877 INFO L85 PathProgramCache]: Analyzing trace with hash -407714599, now seen corresponding path program 1 times [2021-12-17 23:27:04,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:27:04,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665139756] [2021-12-17 23:27:04,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:27:04,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:27:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:27:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:27:04,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:27:04,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665139756] [2021-12-17 23:27:04,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665139756] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:27:04,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:27:04,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 23:27:04,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830697790] [2021-12-17 23:27:04,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:27:04,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 23:27:04,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:27:04,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 23:27:04,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 23:27:04,932 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 91 [2021-12-17 23:27:04,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 83 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:04,933 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:27:04,933 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 91 [2021-12-17 23:27:04,933 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:27:04,978 INFO L129 PetriNetUnfolder]: 0/80 cut-off events. [2021-12-17 23:27:04,978 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-17 23:27:04,979 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 80 events. 0/80 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 0. Up to 19 conditions per place. [2021-12-17 23:27:04,980 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 24 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2021-12-17 23:27:04,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 76 transitions, 227 flow [2021-12-17 23:27:04,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 23:27:04,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 23:27:04,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2021-12-17 23:27:04,985 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7216117216117216 [2021-12-17 23:27:04,986 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 197 transitions. [2021-12-17 23:27:04,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 197 transitions. [2021-12-17 23:27:04,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:27:04,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 197 transitions. [2021-12-17 23:27:04,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:04,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 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) [2021-12-17 23:27:04,989 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 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) [2021-12-17 23:27:04,989 INFO L186 Difference]: Start difference. First operand has 87 places, 83 transitions, 182 flow. Second operand 3 states and 197 transitions. [2021-12-17 23:27:04,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 76 transitions, 227 flow [2021-12-17 23:27:04,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 76 transitions, 227 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-17 23:27:04,993 INFO L242 Difference]: Finished difference. Result has 78 places, 70 transitions, 180 flow [2021-12-17 23:27:04,993 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2021-12-17 23:27:04,994 INFO L334 CegarLoopForPetriNet]: 87 programPoint places, -9 predicate places. [2021-12-17 23:27:04,994 INFO L470 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 180 flow [2021-12-17 23:27:04,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:04,995 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:27:04,995 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2021-12-17 23:27:04,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 23:27:04,996 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 23:27:04,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:27:04,997 INFO L85 PathProgramCache]: Analyzing trace with hash -121871665, now seen corresponding path program 1 times [2021-12-17 23:27:04,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:27:04,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378807334] [2021-12-17 23:27:04,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:27:04,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:27:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 23:27:05,048 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 23:27:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 23:27:05,075 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 23:27:05,078 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 23:27:05,079 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 4 remaining) [2021-12-17 23:27:05,080 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2021-12-17 23:27:05,081 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 4 remaining) [2021-12-17 23:27:05,081 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2021-12-17 23:27:05,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 23:27:05,084 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-17 23:27:05,086 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-17 23:27:05,086 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-12-17 23:27:05,099 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,099 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,100 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of2ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,100 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of2ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,100 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,101 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,102 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of2ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,102 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of2ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,102 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,102 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,102 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,102 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,103 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,103 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,103 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of2ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,103 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of2ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,103 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,103 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,103 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of2ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,104 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of2ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,104 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,104 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,104 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,104 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,105 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,105 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,105 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of2ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,105 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of2ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,105 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,105 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,105 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of2ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,106 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of2ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,106 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,106 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,106 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,106 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,106 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,106 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,107 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of2ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,109 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of2ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,111 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,111 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,111 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of2ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,111 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of2ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,111 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,112 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,112 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,112 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,115 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of2ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,116 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,116 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of2ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,116 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,116 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of2ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,117 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of2ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,117 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,117 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,118 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,118 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of2ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,118 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of2ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,118 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,118 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,119 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of2ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,119 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,119 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of2ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:05,121 INFO L148 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2021-12-17 23:27:05,124 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 23:27:05,125 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 [2021-12-17 23:27:05,126 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-17 23:27:05,128 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 110 transitions, 268 flow [2021-12-17 23:27:05,188 INFO L129 PetriNetUnfolder]: 107/656 cut-off events. [2021-12-17 23:27:05,188 INFO L130 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2021-12-17 23:27:05,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 656 events. 107/656 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3171 event pairs, 2 based on Foata normal form. 0/556 useless extension candidates. Maximal degree in co-relation 395. Up to 32 conditions per place. [2021-12-17 23:27:05,192 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 110 transitions, 268 flow [2021-12-17 23:27:05,194 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 110 transitions, 268 flow [2021-12-17 23:27:05,197 INFO L129 PetriNetUnfolder]: 5/65 cut-off events. [2021-12-17 23:27:05,197 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 23:27:05,197 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:27:05,198 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] [2021-12-17 23:27:05,198 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 23:27:05,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:27:05,198 INFO L85 PathProgramCache]: Analyzing trace with hash -341074863, now seen corresponding path program 1 times [2021-12-17 23:27:05,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:27:05,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304605000] [2021-12-17 23:27:05,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:27:05,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:27:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:27:05,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:27:05,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:27:05,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304605000] [2021-12-17 23:27:05,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304605000] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:27:05,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:27:05,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 23:27:05,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601172623] [2021-12-17 23:27:05,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:27:05,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 23:27:05,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:27:05,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 23:27:05,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 23:27:05,222 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 110 [2021-12-17 23:27:05,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 110 transitions, 268 flow. Second operand has 2 states, 2 states have (on average 91.0) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:05,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:27:05,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 110 [2021-12-17 23:27:05,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:27:05,276 INFO L129 PetriNetUnfolder]: 57/600 cut-off events. [2021-12-17 23:27:05,276 INFO L130 PetriNetUnfolder]: For 212/212 co-relation queries the response was YES. [2021-12-17 23:27:05,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 600 events. 57/600 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3072 event pairs, 1 based on Foata normal form. 81/631 useless extension candidates. Maximal degree in co-relation 392. Up to 73 conditions per place. [2021-12-17 23:27:05,279 INFO L132 encePairwiseOnDemand]: 104/110 looper letters, 12 selfloop transitions, 0 changer transitions 0/102 dead transitions. [2021-12-17 23:27:05,279 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 102 transitions, 276 flow [2021-12-17 23:27:05,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 23:27:05,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-17 23:27:05,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 198 transitions. [2021-12-17 23:27:05,281 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9 [2021-12-17 23:27:05,281 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 198 transitions. [2021-12-17 23:27:05,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 198 transitions. [2021-12-17 23:27:05,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:27:05,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 198 transitions. [2021-12-17 23:27:05,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 99.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:05,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:05,284 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:05,284 INFO L186 Difference]: Start difference. First operand has 105 places, 110 transitions, 268 flow. Second operand 2 states and 198 transitions. [2021-12-17 23:27:05,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 102 transitions, 276 flow [2021-12-17 23:27:05,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 102 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-17 23:27:05,289 INFO L242 Difference]: Finished difference. Result has 104 places, 102 transitions, 252 flow [2021-12-17 23:27:05,289 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=252, PETRI_PLACES=104, PETRI_TRANSITIONS=102} [2021-12-17 23:27:05,291 INFO L334 CegarLoopForPetriNet]: 105 programPoint places, -1 predicate places. [2021-12-17 23:27:05,291 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 102 transitions, 252 flow [2021-12-17 23:27:05,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 91.0) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:05,291 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:27:05,291 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] [2021-12-17 23:27:05,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 23:27:05,292 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 23:27:05,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:27:05,292 INFO L85 PathProgramCache]: Analyzing trace with hash -537588368, now seen corresponding path program 1 times [2021-12-17 23:27:05,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:27:05,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564491750] [2021-12-17 23:27:05,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:27:05,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:27:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:27:05,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:27:05,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:27:05,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564491750] [2021-12-17 23:27:05,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564491750] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:27:05,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:27:05,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 23:27:05,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025357734] [2021-12-17 23:27:05,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:27:05,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 23:27:05,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:27:05,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 23:27:05,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 23:27:05,346 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2021-12-17 23:27:05,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 102 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:05,347 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:27:05,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2021-12-17 23:27:05,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:27:05,492 INFO L129 PetriNetUnfolder]: 58/575 cut-off events. [2021-12-17 23:27:05,492 INFO L130 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2021-12-17 23:27:05,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 575 events. 58/575 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2900 event pairs, 0 based on Foata normal form. 0/539 useless extension candidates. Maximal degree in co-relation 1021. Up to 207 conditions per place. [2021-12-17 23:27:05,495 INFO L132 encePairwiseOnDemand]: 98/110 looper letters, 53 selfloop transitions, 8 changer transitions 0/126 dead transitions. [2021-12-17 23:27:05,495 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 126 transitions, 446 flow [2021-12-17 23:27:05,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 23:27:05,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 23:27:05,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2021-12-17 23:27:05,497 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7878787878787878 [2021-12-17 23:27:05,497 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2021-12-17 23:27:05,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2021-12-17 23:27:05,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:27:05,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2021-12-17 23:27:05,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:05,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:05,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:05,500 INFO L186 Difference]: Start difference. First operand has 104 places, 102 transitions, 252 flow. Second operand 3 states and 260 transitions. [2021-12-17 23:27:05,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 126 transitions, 446 flow [2021-12-17 23:27:05,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 126 transitions, 446 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-17 23:27:05,505 INFO L242 Difference]: Finished difference. Result has 107 places, 106 transitions, 300 flow [2021-12-17 23:27:05,506 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=107, PETRI_TRANSITIONS=106} [2021-12-17 23:27:05,508 INFO L334 CegarLoopForPetriNet]: 105 programPoint places, 2 predicate places. [2021-12-17 23:27:05,508 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 106 transitions, 300 flow [2021-12-17 23:27:05,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:05,508 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:27:05,509 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] [2021-12-17 23:27:05,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 23:27:05,509 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 23:27:05,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:27:05,510 INFO L85 PathProgramCache]: Analyzing trace with hash 853052668, now seen corresponding path program 1 times [2021-12-17 23:27:05,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:27:05,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932517722] [2021-12-17 23:27:05,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:27:05,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:27:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:27:05,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:27:05,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:27:05,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932517722] [2021-12-17 23:27:05,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932517722] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 23:27:05,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581350637] [2021-12-17 23:27:05,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:27:05,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:27:05,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:27:05,588 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) [2021-12-17 23:27:05,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 23:27:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:27:05,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 23:27:05,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 23:27:05,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:27:05,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 23:27:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:27:05,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581350637] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 23:27:05,850 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 23:27:05,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-12-17 23:27:05,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140966365] [2021-12-17 23:27:05,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 23:27:05,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 23:27:05,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:27:05,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 23:27:05,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-17 23:27:05,853 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 110 [2021-12-17 23:27:05,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 106 transitions, 300 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:05,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:27:05,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 110 [2021-12-17 23:27:05,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:27:05,904 INFO L129 PetriNetUnfolder]: 0/57 cut-off events. [2021-12-17 23:27:05,905 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-12-17 23:27:05,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 57 events. 0/57 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 20 event pairs, 0 based on Foata normal form. 2/59 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-12-17 23:27:05,905 INFO L132 encePairwiseOnDemand]: 105/110 looper letters, 10 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2021-12-17 23:27:05,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 51 transitions, 156 flow [2021-12-17 23:27:05,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 23:27:05,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-17 23:27:05,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 586 transitions. [2021-12-17 23:27:05,907 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.591919191919192 [2021-12-17 23:27:05,907 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 586 transitions. [2021-12-17 23:27:05,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 586 transitions. [2021-12-17 23:27:05,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:27:05,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 586 transitions. [2021-12-17 23:27:05,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 65.11111111111111) internal successors, (586), 9 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:05,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:05,912 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:05,912 INFO L186 Difference]: Start difference. First operand has 107 places, 106 transitions, 300 flow. Second operand 9 states and 586 transitions. [2021-12-17 23:27:05,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 51 transitions, 156 flow [2021-12-17 23:27:05,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 51 transitions, 152 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-12-17 23:27:05,913 INFO L242 Difference]: Finished difference. Result has 62 places, 47 transitions, 124 flow [2021-12-17 23:27:05,914 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=124, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2021-12-17 23:27:05,914 INFO L334 CegarLoopForPetriNet]: 105 programPoint places, -43 predicate places. [2021-12-17 23:27:05,914 INFO L470 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 124 flow [2021-12-17 23:27:05,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:05,915 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:27:05,915 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2021-12-17 23:27:05,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 23:27:06,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-17 23:27:06,132 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 23:27:06,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:27:06,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1479036618, now seen corresponding path program 1 times [2021-12-17 23:27:06,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:27:06,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55979837] [2021-12-17 23:27:06,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:27:06,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:27:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 23:27:06,147 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 23:27:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 23:27:06,164 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 23:27:06,167 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 23:27:06,168 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATION (4 of 5 remaining) [2021-12-17 23:27:06,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2021-12-17 23:27:06,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 5 remaining) [2021-12-17 23:27:06,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2021-12-17 23:27:06,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2021-12-17 23:27:06,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 23:27:06,169 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-12-17 23:27:06,170 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-17 23:27:06,170 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-12-17 23:27:06,182 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,183 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,183 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,183 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,183 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,183 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,183 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,183 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,184 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,184 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,184 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,184 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,184 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,184 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,184 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,184 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,184 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,185 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,185 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,185 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,185 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,185 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,185 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,185 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,185 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,185 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,186 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,186 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,186 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,186 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,186 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,186 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,186 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,186 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,187 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,187 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,188 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,188 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,188 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,188 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,188 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,188 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,188 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,188 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,188 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,189 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,189 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,189 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,189 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,189 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,189 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,189 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,189 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,190 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,190 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,190 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,190 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,190 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,190 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,191 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,191 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,191 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,191 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,191 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,191 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,191 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,191 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,191 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,192 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,192 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,192 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,192 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,192 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,192 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,193 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,193 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,193 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,193 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,193 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,193 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,194 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,194 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,194 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,194 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,194 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,194 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,194 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,195 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,195 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,195 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,195 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,195 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,196 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,196 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,196 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,196 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:06,204 INFO L148 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2021-12-17 23:27:06,205 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 23:27:06,212 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 [2021-12-17 23:27:06,212 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-17 23:27:06,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 123 places, 129 transitions, 336 flow [2021-12-17 23:27:06,379 INFO L129 PetriNetUnfolder]: 496/2280 cut-off events. [2021-12-17 23:27:06,379 INFO L130 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2021-12-17 23:27:06,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2731 conditions, 2280 events. 496/2280 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 14991 event pairs, 64 based on Foata normal form. 0/1960 useless extension candidates. Maximal degree in co-relation 1399. Up to 192 conditions per place. [2021-12-17 23:27:06,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 129 transitions, 336 flow [2021-12-17 23:27:06,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 129 transitions, 336 flow [2021-12-17 23:27:06,399 INFO L129 PetriNetUnfolder]: 6/68 cut-off events. [2021-12-17 23:27:06,400 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 23:27:06,400 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:27:06,400 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] [2021-12-17 23:27:06,400 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-17 23:27:06,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:27:06,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1099185159, now seen corresponding path program 1 times [2021-12-17 23:27:06,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:27:06,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260682109] [2021-12-17 23:27:06,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:27:06,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:27:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:27:06,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:27:06,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:27:06,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260682109] [2021-12-17 23:27:06,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260682109] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:27:06,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:27:06,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 23:27:06,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882037282] [2021-12-17 23:27:06,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:27:06,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 23:27:06,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:27:06,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 23:27:06,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 23:27:06,421 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 129 [2021-12-17 23:27:06,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 129 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:06,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:27:06,422 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 129 [2021-12-17 23:27:06,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:27:06,737 INFO L129 PetriNetUnfolder]: 444/2469 cut-off events. [2021-12-17 23:27:06,738 INFO L130 PetriNetUnfolder]: For 592/592 co-relation queries the response was YES. [2021-12-17 23:27:06,743 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4690 conditions, 2469 events. 444/2469 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 19426 event pairs, 10 based on Foata normal form. 1641/3969 useless extension candidates. Maximal degree in co-relation 2312. Up to 1054 conditions per place. [2021-12-17 23:27:06,751 INFO L132 encePairwiseOnDemand]: 110/129 looper letters, 63 selfloop transitions, 8 changer transitions 0/147 dead transitions. [2021-12-17 23:27:06,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 147 transitions, 550 flow [2021-12-17 23:27:06,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 23:27:06,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 23:27:06,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 317 transitions. [2021-12-17 23:27:06,752 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8191214470284238 [2021-12-17 23:27:06,752 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 317 transitions. [2021-12-17 23:27:06,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 317 transitions. [2021-12-17 23:27:06,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:27:06,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 317 transitions. [2021-12-17 23:27:06,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:06,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:06,754 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:06,755 INFO L186 Difference]: Start difference. First operand has 123 places, 129 transitions, 336 flow. Second operand 3 states and 317 transitions. [2021-12-17 23:27:06,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 147 transitions, 550 flow [2021-12-17 23:27:06,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 147 transitions, 550 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-17 23:27:06,759 INFO L242 Difference]: Finished difference. Result has 123 places, 123 transitions, 364 flow [2021-12-17 23:27:06,759 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=364, PETRI_PLACES=123, PETRI_TRANSITIONS=123} [2021-12-17 23:27:06,761 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, 0 predicate places. [2021-12-17 23:27:06,761 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 123 transitions, 364 flow [2021-12-17 23:27:06,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:06,761 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:27:06,761 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] [2021-12-17 23:27:06,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 23:27:06,761 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-17 23:27:06,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:27:06,762 INFO L85 PathProgramCache]: Analyzing trace with hash -524673210, now seen corresponding path program 1 times [2021-12-17 23:27:06,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:27:06,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197518387] [2021-12-17 23:27:06,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:27:06,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:27:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:27:06,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:27:06,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:27:06,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197518387] [2021-12-17 23:27:06,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197518387] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 23:27:06,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001916704] [2021-12-17 23:27:06,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:27:06,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:27:06,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:27:06,807 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) [2021-12-17 23:27:06,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 23:27:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:27:06,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 23:27:06,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 23:27:06,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:27:06,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 23:27:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:27:07,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001916704] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 23:27:07,008 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 23:27:07,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-12-17 23:27:07,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819132509] [2021-12-17 23:27:07,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 23:27:07,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 23:27:07,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:27:07,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 23:27:07,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-17 23:27:07,010 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 129 [2021-12-17 23:27:07,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 123 transitions, 364 flow. Second operand has 10 states, 10 states have (on average 76.8) internal successors, (768), 10 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:07,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:27:07,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 129 [2021-12-17 23:27:07,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:27:07,347 INFO L129 PetriNetUnfolder]: 423/2263 cut-off events. [2021-12-17 23:27:07,348 INFO L130 PetriNetUnfolder]: For 683/683 co-relation queries the response was YES. [2021-12-17 23:27:07,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4771 conditions, 2263 events. 423/2263 cut-off events. For 683/683 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 17722 event pairs, 35 based on Foata normal form. 2/2262 useless extension candidates. Maximal degree in co-relation 2217. Up to 482 conditions per place. [2021-12-17 23:27:07,358 INFO L132 encePairwiseOnDemand]: 114/129 looper letters, 59 selfloop transitions, 21 changer transitions 0/154 dead transitions. [2021-12-17 23:27:07,358 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 154 transitions, 624 flow [2021-12-17 23:27:07,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 23:27:07,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-17 23:27:07,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 822 transitions. [2021-12-17 23:27:07,361 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6372093023255814 [2021-12-17 23:27:07,361 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 822 transitions. [2021-12-17 23:27:07,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 822 transitions. [2021-12-17 23:27:07,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:27:07,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 822 transitions. [2021-12-17 23:27:07,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 82.2) internal successors, (822), 10 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:07,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 129.0) internal successors, (1419), 11 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:07,364 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 129.0) internal successors, (1419), 11 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:07,364 INFO L186 Difference]: Start difference. First operand has 123 places, 123 transitions, 364 flow. Second operand 10 states and 822 transitions. [2021-12-17 23:27:07,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 154 transitions, 624 flow [2021-12-17 23:27:07,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 154 transitions, 616 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-17 23:27:07,368 INFO L242 Difference]: Finished difference. Result has 134 places, 132 transitions, 456 flow [2021-12-17 23:27:07,368 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=456, PETRI_PLACES=134, PETRI_TRANSITIONS=132} [2021-12-17 23:27:07,369 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, 11 predicate places. [2021-12-17 23:27:07,369 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 132 transitions, 456 flow [2021-12-17 23:27:07,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.8) internal successors, (768), 10 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:07,369 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:27:07,370 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 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] [2021-12-17 23:27:07,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 23:27:07,583 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,SelfDestructingSolverStorable8 [2021-12-17 23:27:07,583 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-17 23:27:07,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:27:07,584 INFO L85 PathProgramCache]: Analyzing trace with hash 531540147, now seen corresponding path program 1 times [2021-12-17 23:27:07,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:27:07,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41426091] [2021-12-17 23:27:07,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:27:07,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:27:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 23:27:07,595 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 23:27:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 23:27:07,618 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 23:27:07,619 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 23:27:07,619 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (5 of 6 remaining) [2021-12-17 23:27:07,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-12-17 23:27:07,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 6 remaining) [2021-12-17 23:27:07,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-12-17 23:27:07,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-12-17 23:27:07,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-12-17 23:27:07,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 23:27:07,620 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-17 23:27:07,620 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-17 23:27:07,620 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-12-17 23:27:07,629 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,629 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,629 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,629 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,629 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,629 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,630 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,630 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,630 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,630 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,630 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,630 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,630 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,630 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,630 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,631 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,631 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,631 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,631 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,631 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,631 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,631 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,631 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,631 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,632 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,632 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,632 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,632 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,632 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,632 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,632 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,632 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,632 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,632 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,633 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,633 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,633 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,633 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,633 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,633 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,633 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,633 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,633 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,633 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,634 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,634 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,634 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,634 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,634 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,634 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,634 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,634 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,634 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,635 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,635 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,635 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,635 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,635 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,635 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,635 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,635 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,635 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,636 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,636 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,636 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,636 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,636 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,636 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,636 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,636 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,636 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,636 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,637 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,637 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,637 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,637 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,637 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,637 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,637 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,637 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,637 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,638 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,638 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,638 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,638 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,638 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,638 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,638 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,638 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,638 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,639 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,639 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,639 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,639 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,639 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,639 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,639 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,640 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,640 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,640 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,640 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,640 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,640 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,640 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,641 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,641 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,641 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,641 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,641 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,641 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,641 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,642 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,642 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,642 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,642 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,642 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,642 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,642 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,642 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,643 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,643 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,643 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,643 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,643 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,643 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,644 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,644 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,644 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:27:07,656 INFO L148 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-12-17 23:27:07,657 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 23:27:07,657 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 [2021-12-17 23:27:07,658 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-12-17 23:27:07,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 141 places, 148 transitions, 408 flow [2021-12-17 23:27:08,391 INFO L129 PetriNetUnfolder]: 2379/8746 cut-off events. [2021-12-17 23:27:08,391 INFO L130 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2021-12-17 23:27:08,441 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10911 conditions, 8746 events. 2379/8746 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 75560 event pairs, 626 based on Foata normal form. 0/7622 useless extension candidates. Maximal degree in co-relation 5388. Up to 1024 conditions per place. [2021-12-17 23:27:08,441 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 148 transitions, 408 flow [2021-12-17 23:27:08,475 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 148 transitions, 408 flow [2021-12-17 23:27:08,478 INFO L129 PetriNetUnfolder]: 5/64 cut-off events. [2021-12-17 23:27:08,478 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 23:27:08,478 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:27:08,478 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] [2021-12-17 23:27:08,478 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 23:27:08,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:27:08,479 INFO L85 PathProgramCache]: Analyzing trace with hash 404176023, now seen corresponding path program 1 times [2021-12-17 23:27:08,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:27:08,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095209762] [2021-12-17 23:27:08,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:27:08,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:27:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:27:08,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:27:08,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:27:08,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095209762] [2021-12-17 23:27:08,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095209762] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:27:08,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:27:08,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 23:27:08,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060237344] [2021-12-17 23:27:08,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:27:08,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 23:27:08,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:27:08,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 23:27:08,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 23:27:08,492 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 148 [2021-12-17 23:27:08,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 148 transitions, 408 flow. Second operand has 2 states, 2 states have (on average 113.0) internal successors, (226), 2 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:08,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:27:08,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 148 [2021-12-17 23:27:08,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:27:09,263 INFO L129 PetriNetUnfolder]: 1817/8164 cut-off events. [2021-12-17 23:27:09,263 INFO L130 PetriNetUnfolder]: For 6300/6300 co-relation queries the response was YES. [2021-12-17 23:27:09,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12402 conditions, 8164 events. 1817/8164 cut-off events. For 6300/6300 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 74492 event pairs, 313 based on Foata normal form. 1608/9210 useless extension candidates. Maximal degree in co-relation 5991. Up to 2073 conditions per place. [2021-12-17 23:27:09,301 INFO L132 encePairwiseOnDemand]: 140/148 looper letters, 24 selfloop transitions, 0 changer transitions 0/136 dead transitions. [2021-12-17 23:27:09,301 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 136 transitions, 432 flow [2021-12-17 23:27:09,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 23:27:09,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-17 23:27:09,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 256 transitions. [2021-12-17 23:27:09,303 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8648648648648649 [2021-12-17 23:27:09,303 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 256 transitions. [2021-12-17 23:27:09,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 256 transitions. [2021-12-17 23:27:09,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:27:09,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 256 transitions. [2021-12-17 23:27:09,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 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) [2021-12-17 23:27:09,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:09,306 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:09,306 INFO L186 Difference]: Start difference. First operand has 141 places, 148 transitions, 408 flow. Second operand 2 states and 256 transitions. [2021-12-17 23:27:09,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 136 transitions, 432 flow [2021-12-17 23:27:09,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 136 transitions, 432 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-17 23:27:09,310 INFO L242 Difference]: Finished difference. Result has 138 places, 136 transitions, 384 flow [2021-12-17 23:27:09,310 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=384, PETRI_PLACES=138, PETRI_TRANSITIONS=136} [2021-12-17 23:27:09,312 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, -3 predicate places. [2021-12-17 23:27:09,312 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 136 transitions, 384 flow [2021-12-17 23:27:09,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 113.0) internal successors, (226), 2 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:09,313 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:27:09,313 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] [2021-12-17 23:27:09,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 23:27:09,313 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 23:27:09,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:27:09,314 INFO L85 PathProgramCache]: Analyzing trace with hash 207662518, now seen corresponding path program 1 times [2021-12-17 23:27:09,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:27:09,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040364922] [2021-12-17 23:27:09,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:27:09,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:27:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:27:09,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:27:09,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:27:09,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040364922] [2021-12-17 23:27:09,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040364922] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:27:09,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:27:09,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 23:27:09,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78307953] [2021-12-17 23:27:09,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:27:09,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 23:27:09,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:27:09,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 23:27:09,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 23:27:09,334 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 148 [2021-12-17 23:27:09,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 136 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:09,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:27:09,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 148 [2021-12-17 23:27:09,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:27:10,483 INFO L129 PetriNetUnfolder]: 2570/10361 cut-off events. [2021-12-17 23:27:10,484 INFO L130 PetriNetUnfolder]: For 3152/3152 co-relation queries the response was YES. [2021-12-17 23:27:10,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20629 conditions, 10361 events. 2570/10361 cut-off events. For 3152/3152 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 102688 event pairs, 152 based on Foata normal form. 0/9823 useless extension candidates. Maximal degree in co-relation 20618. Up to 4843 conditions per place. [2021-12-17 23:27:10,540 INFO L132 encePairwiseOnDemand]: 136/148 looper letters, 73 selfloop transitions, 8 changer transitions 0/168 dead transitions. [2021-12-17 23:27:10,540 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 168 transitions, 658 flow [2021-12-17 23:27:10,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 23:27:10,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 23:27:10,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2021-12-17 23:27:10,542 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7792792792792793 [2021-12-17 23:27:10,542 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2021-12-17 23:27:10,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2021-12-17 23:27:10,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:27:10,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2021-12-17 23:27:10,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:10,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:10,544 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:10,544 INFO L186 Difference]: Start difference. First operand has 138 places, 136 transitions, 384 flow. Second operand 3 states and 346 transitions. [2021-12-17 23:27:10,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 168 transitions, 658 flow [2021-12-17 23:27:10,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 168 transitions, 658 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-17 23:27:10,548 INFO L242 Difference]: Finished difference. Result has 141 places, 140 transitions, 432 flow [2021-12-17 23:27:10,549 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=432, PETRI_PLACES=141, PETRI_TRANSITIONS=140} [2021-12-17 23:27:10,549 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 0 predicate places. [2021-12-17 23:27:10,549 INFO L470 AbstractCegarLoop]: Abstraction has has 141 places, 140 transitions, 432 flow [2021-12-17 23:27:10,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:10,550 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:27:10,550 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] [2021-12-17 23:27:10,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 23:27:10,550 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 23:27:10,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:27:10,550 INFO L85 PathProgramCache]: Analyzing trace with hash 676761736, now seen corresponding path program 1 times [2021-12-17 23:27:10,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:27:10,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398697421] [2021-12-17 23:27:10,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:27:10,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:27:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:27:10,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:27:10,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:27:10,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398697421] [2021-12-17 23:27:10,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398697421] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 23:27:10,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969818682] [2021-12-17 23:27:10,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:27:10,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:27:10,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:27:10,579 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) [2021-12-17 23:27:10,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 23:27:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:27:10,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 23:27:10,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 23:27:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:27:10,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 23:27:10,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:27:10,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969818682] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 23:27:10,745 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 23:27:10,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-12-17 23:27:10,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699295574] [2021-12-17 23:27:10,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 23:27:10,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 23:27:10,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:27:10,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 23:27:10,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-17 23:27:10,747 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 148 [2021-12-17 23:27:10,747 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 140 transitions, 432 flow. Second operand has 10 states, 10 states have (on average 87.8) internal successors, (878), 10 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:10,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:27:10,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 148 [2021-12-17 23:27:10,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:27:11,849 INFO L129 PetriNetUnfolder]: 2538/10077 cut-off events. [2021-12-17 23:27:11,850 INFO L130 PetriNetUnfolder]: For 3601/3601 co-relation queries the response was YES. [2021-12-17 23:27:11,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21963 conditions, 10077 events. 2538/10077 cut-off events. For 3601/3601 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 102280 event pairs, 214 based on Foata normal form. 2/10071 useless extension candidates. Maximal degree in co-relation 21950. Up to 2161 conditions per place. [2021-12-17 23:27:12,014 INFO L132 encePairwiseOnDemand]: 133/148 looper letters, 69 selfloop transitions, 21 changer transitions 0/175 dead transitions. [2021-12-17 23:27:12,014 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 175 transitions, 732 flow [2021-12-17 23:27:12,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 23:27:12,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-17 23:27:12,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 942 transitions. [2021-12-17 23:27:12,017 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6364864864864865 [2021-12-17 23:27:12,017 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 942 transitions. [2021-12-17 23:27:12,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 942 transitions. [2021-12-17 23:27:12,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:27:12,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 942 transitions. [2021-12-17 23:27:12,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 94.2) internal successors, (942), 10 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:12,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 148.0) internal successors, (1628), 11 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:12,022 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 148.0) internal successors, (1628), 11 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:12,023 INFO L186 Difference]: Start difference. First operand has 141 places, 140 transitions, 432 flow. Second operand 10 states and 942 transitions. [2021-12-17 23:27:12,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 175 transitions, 732 flow [2021-12-17 23:27:12,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 175 transitions, 724 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-17 23:27:12,034 INFO L242 Difference]: Finished difference. Result has 152 places, 149 transitions, 524 flow [2021-12-17 23:27:12,035 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=524, PETRI_PLACES=152, PETRI_TRANSITIONS=149} [2021-12-17 23:27:12,036 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 11 predicate places. [2021-12-17 23:27:12,036 INFO L470 AbstractCegarLoop]: Abstraction has has 152 places, 149 transitions, 524 flow [2021-12-17 23:27:12,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 87.8) internal successors, (878), 10 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:12,037 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:27:12,037 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2021-12-17 23:27:12,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 23:27:12,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:27:12,251 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 23:27:12,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:27:12,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1377560969, now seen corresponding path program 1 times [2021-12-17 23:27:12,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:27:12,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481123585] [2021-12-17 23:27:12,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:27:12,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:27:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:27:12,306 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-17 23:27:12,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:27:12,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481123585] [2021-12-17 23:27:12,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481123585] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:27:12,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:27:12,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 23:27:12,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521452785] [2021-12-17 23:27:12,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:27:12,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 23:27:12,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:27:12,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 23:27:12,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 23:27:12,308 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 148 [2021-12-17 23:27:12,309 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 149 transitions, 524 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:27:12,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:27:12,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 148 [2021-12-17 23:27:12,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand