./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-deagle/reorder_c11_bad-10.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-10.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 10d5067d95273951a014725afb4753c98c29896d9675321f4fa3b00f339e7930 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 23:26:32,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 23:26:32,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 23:26:32,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 23:26:32,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 23:26:32,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 23:26:32,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 23:26:32,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 23:26:32,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 23:26:32,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 23:26:32,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 23:26:32,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 23:26:32,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 23:26:32,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 23:26:32,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 23:26:32,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 23:26:32,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 23:26:32,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 23:26:32,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 23:26:32,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 23:26:32,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 23:26:32,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 23:26:32,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 23:26:32,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 23:26:32,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 23:26:32,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 23:26:32,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 23:26:32,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 23:26:32,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 23:26:32,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 23:26:32,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 23:26:32,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 23:26:32,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 23:26:32,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 23:26:32,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 23:26:32,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 23:26:32,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 23:26:32,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 23:26:32,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 23:26:32,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 23:26:32,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 23:26:32,388 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 23:26:32,414 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 23:26:32,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 23:26:32,415 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 23:26:32,415 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 23:26:32,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 23:26:32,416 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 23:26:32,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 23:26:32,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 23:26:32,417 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 23:26:32,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 23:26:32,418 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 23:26:32,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 23:26:32,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 23:26:32,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 23:26:32,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 23:26:32,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 23:26:32,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 23:26:32,419 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 23:26:32,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 23:26:32,419 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 23:26:32,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 23:26:32,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 23:26:32,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 23:26:32,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 23:26:32,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 23:26:32,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 23:26:32,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 23:26:32,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 23:26:32,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 23:26:32,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 23:26:32,421 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 23:26:32,421 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 23:26:32,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 23:26:32,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 23:26:32,422 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10d5067d95273951a014725afb4753c98c29896d9675321f4fa3b00f339e7930 [2021-12-17 23:26:32,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 23:26:32,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 23:26:32,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 23:26:32,677 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 23:26:32,678 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 23:26:32,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-deagle/reorder_c11_bad-10.i [2021-12-17 23:26:32,748 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bbe308a8/1ad16e69e9f743af96b680af19906783/FLAGe40950e99 [2021-12-17 23:26:33,201 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 23:26:33,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/reorder_c11_bad-10.i [2021-12-17 23:26:33,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bbe308a8/1ad16e69e9f743af96b680af19906783/FLAGe40950e99 [2021-12-17 23:26:33,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bbe308a8/1ad16e69e9f743af96b680af19906783 [2021-12-17 23:26:33,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 23:26:33,543 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 23:26:33,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 23:26:33,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 23:26:33,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 23:26:33,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:26:33" (1/1) ... [2021-12-17 23:26:33,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@206f718e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:26:33, skipping insertion in model container [2021-12-17 23:26:33,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:26:33" (1/1) ... [2021-12-17 23:26:33,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 23:26:33,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 23:26:33,945 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-10.i[30190,30203] [2021-12-17 23:26:33,957 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 23:26:33,963 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 23:26:34,020 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-10.i[30190,30203] [2021-12-17 23:26:34,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 23:26:34,052 INFO L208 MainTranslator]: Completed translation [2021-12-17 23:26:34,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:26:34 WrapperNode [2021-12-17 23:26:34,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 23:26:34,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 23:26:34,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 23:26:34,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 23:26:34,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:26:34" (1/1) ... [2021-12-17 23:26:34,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:26:34" (1/1) ... [2021-12-17 23:26:34,088 INFO L137 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 71 [2021-12-17 23:26:34,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 23:26:34,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 23:26:34,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 23:26:34,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 23:26:34,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:26:34" (1/1) ... [2021-12-17 23:26:34,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:26:34" (1/1) ... [2021-12-17 23:26:34,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:26:34" (1/1) ... [2021-12-17 23:26:34,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:26:34" (1/1) ... [2021-12-17 23:26:34,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:26:34" (1/1) ... [2021-12-17 23:26:34,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:26:34" (1/1) ... [2021-12-17 23:26:34,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:26:34" (1/1) ... [2021-12-17 23:26:34,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 23:26:34,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 23:26:34,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 23:26:34,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 23:26:34,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:26:34" (1/1) ... [2021-12-17 23:26:34,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 23:26:34,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:26:34,152 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 23:26:34,165 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 23:26:34,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 23:26:34,194 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2021-12-17 23:26:34,195 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2021-12-17 23:26:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 23:26:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-17 23:26:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 23:26:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 23:26:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 23:26:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2021-12-17 23:26:34,196 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2021-12-17 23:26:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 23:26:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-17 23:26:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 23:26:34,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 23:26:34,198 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 23:26:34,336 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 23:26:34,337 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 23:26:34,460 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 23:26:34,465 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 23:26:34,465 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-17 23:26:34,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:26:34 BoogieIcfgContainer [2021-12-17 23:26:34,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 23:26:34,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 23:26:34,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 23:26:34,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 23:26:34,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 11:26:33" (1/3) ... [2021-12-17 23:26:34,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d8487f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:26:34, skipping insertion in model container [2021-12-17 23:26:34,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:26:34" (2/3) ... [2021-12-17 23:26:34,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d8487f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:26:34, skipping insertion in model container [2021-12-17 23:26:34,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:26:34" (3/3) ... [2021-12-17 23:26:34,476 INFO L111 eAbstractionObserver]: Analyzing ICFG reorder_c11_bad-10.i [2021-12-17 23:26:34,480 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-17 23:26:34,480 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 23:26:34,480 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 23:26:34,480 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-17 23:26:34,499 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,500 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,500 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of1ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,500 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of1ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,500 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,500 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,501 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of1ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,501 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of1ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,501 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,501 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,502 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,502 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,502 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,502 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,502 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of1ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,503 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of1ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,503 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,503 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,503 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of1ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,503 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of1ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,504 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,504 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,504 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,504 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,506 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,507 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,507 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of1ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,507 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of1ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,510 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,510 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,510 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of1ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,510 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of1ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:34,513 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-12-17 23:26:34,559 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 23:26:34,564 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 23:26:34,565 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-17 23:26:34,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 91 transitions, 204 flow [2021-12-17 23:26:34,637 INFO L129 PetriNetUnfolder]: 24/202 cut-off events. [2021-12-17 23:26:34,637 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-12-17 23:26:34,641 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 23:26:34,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 91 transitions, 204 flow [2021-12-17 23:26:34,646 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 89 transitions, 194 flow [2021-12-17 23:26:34,657 INFO L129 PetriNetUnfolder]: 5/66 cut-off events. [2021-12-17 23:26:34,658 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 23:26:34,658 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:26:34,659 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 23:26:34,659 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 23:26:34,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:26:34,664 INFO L85 PathProgramCache]: Analyzing trace with hash -211201094, now seen corresponding path program 1 times [2021-12-17 23:26:34,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:26:34,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334533568] [2021-12-17 23:26:34,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:26:34,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:26:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:26:34,858 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 23:26:34,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:26:34,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334533568] [2021-12-17 23:26:34,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334533568] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:26:34,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:26:34,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 23:26:34,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784636811] [2021-12-17 23:26:34,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:26:34,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 23:26:34,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:26:34,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 23:26:34,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 23:26:34,904 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 91 [2021-12-17 23:26:34,907 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 23:26:34,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:26:34,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 91 [2021-12-17 23:26:34,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:26:34,983 INFO L129 PetriNetUnfolder]: 4/172 cut-off events. [2021-12-17 23:26:34,983 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-12-17 23:26:34,984 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 23:26:34,985 INFO L132 encePairwiseOnDemand]: 86/91 looper letters, 4 selfloop transitions, 0 changer transitions 0/83 dead transitions. [2021-12-17 23:26:34,985 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 190 flow [2021-12-17 23:26:34,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 23:26:35,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-17 23:26:35,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 167 transitions. [2021-12-17 23:26:35,010 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9175824175824175 [2021-12-17 23:26:35,011 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 167 transitions. [2021-12-17 23:26:35,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 167 transitions. [2021-12-17 23:26:35,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:26:35,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 167 transitions. [2021-12-17 23:26:35,024 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 23:26:35,032 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 23:26:35,033 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 23:26:35,034 INFO L186 Difference]: Start difference. First operand has 87 places, 89 transitions, 194 flow. Second operand 2 states and 167 transitions. [2021-12-17 23:26:35,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 190 flow [2021-12-17 23:26:35,039 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 23:26:35,051 INFO L242 Difference]: Finished difference. Result has 87 places, 83 transitions, 182 flow [2021-12-17 23:26:35,053 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 23:26:35,058 INFO L334 CegarLoopForPetriNet]: 87 programPoint places, 0 predicate places. [2021-12-17 23:26:35,059 INFO L470 AbstractCegarLoop]: Abstraction has has 87 places, 83 transitions, 182 flow [2021-12-17 23:26:35,059 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 23:26:35,059 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:26:35,060 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 23:26:35,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 23:26:35,060 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 23:26:35,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:26:35,065 INFO L85 PathProgramCache]: Analyzing trace with hash -407714599, now seen corresponding path program 1 times [2021-12-17 23:26:35,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:26:35,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064288931] [2021-12-17 23:26:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:26:35,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:26:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:26:35,215 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 23:26:35,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:26:35,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064288931] [2021-12-17 23:26:35,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064288931] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:26:35,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:26:35,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 23:26:35,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684628437] [2021-12-17 23:26:35,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:26:35,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 23:26:35,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:26:35,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 23:26:35,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 23:26:35,228 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 91 [2021-12-17 23:26:35,228 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 23:26:35,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:26:35,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 91 [2021-12-17 23:26:35,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:26:35,369 INFO L129 PetriNetUnfolder]: 0/80 cut-off events. [2021-12-17 23:26:35,369 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-17 23:26:35,370 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 23:26:35,370 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 24 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2021-12-17 23:26:35,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 76 transitions, 227 flow [2021-12-17 23:26:35,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 23:26:35,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 23:26:35,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2021-12-17 23:26:35,373 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7216117216117216 [2021-12-17 23:26:35,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 197 transitions. [2021-12-17 23:26:35,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 197 transitions. [2021-12-17 23:26:35,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:26:35,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 197 transitions. [2021-12-17 23:26:35,376 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 23:26:35,378 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 23:26:35,379 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 23:26:35,379 INFO L186 Difference]: Start difference. First operand has 87 places, 83 transitions, 182 flow. Second operand 3 states and 197 transitions. [2021-12-17 23:26:35,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 76 transitions, 227 flow [2021-12-17 23:26:35,384 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 23:26:35,388 INFO L242 Difference]: Finished difference. Result has 78 places, 70 transitions, 180 flow [2021-12-17 23:26:35,388 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 23:26:35,403 INFO L334 CegarLoopForPetriNet]: 87 programPoint places, -9 predicate places. [2021-12-17 23:26:35,403 INFO L470 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 180 flow [2021-12-17 23:26:35,404 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 23:26:35,404 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:26:35,405 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 23:26:35,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 23:26:35,405 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 23:26:35,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:26:35,407 INFO L85 PathProgramCache]: Analyzing trace with hash -121871665, now seen corresponding path program 1 times [2021-12-17 23:26:35,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:26:35,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772753814] [2021-12-17 23:26:35,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:26:35,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:26:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 23:26:35,483 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 23:26:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 23:26:35,570 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 23:26:35,571 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 23:26:35,572 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 4 remaining) [2021-12-17 23:26:35,573 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2021-12-17 23:26:35,574 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 4 remaining) [2021-12-17 23:26:35,574 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2021-12-17 23:26:35,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 23:26:35,577 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-17 23:26:35,578 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-17 23:26:35,578 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-12-17 23:26:35,592 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,593 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,593 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of2ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,593 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of2ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,593 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,593 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,593 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of2ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,593 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of2ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,594 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,594 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,594 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,594 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,594 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,594 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,595 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of2ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,595 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of2ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,595 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,595 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,595 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of2ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,595 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of2ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,596 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,596 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,596 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,596 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,596 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,597 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,597 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of2ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,597 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of2ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,597 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,597 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,597 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of2ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,597 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of2ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,598 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,598 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,598 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,598 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,598 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,599 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,599 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of2ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,599 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of2ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,599 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,599 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,599 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of2ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,599 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of2ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,600 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,600 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,600 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,600 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,601 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of2ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,601 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,601 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of2ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,601 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,602 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of2ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,602 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of2ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,602 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,602 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,602 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,603 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of2ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,603 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of2ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,603 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,603 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,603 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of2ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,604 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,604 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of2ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:35,607 INFO L148 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2021-12-17 23:26:35,621 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 23:26:35,623 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 23:26:35,624 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-17 23:26:35,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 110 transitions, 268 flow [2021-12-17 23:26:35,702 INFO L129 PetriNetUnfolder]: 107/656 cut-off events. [2021-12-17 23:26:35,703 INFO L130 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2021-12-17 23:26:35,708 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 23:26:35,709 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 110 transitions, 268 flow [2021-12-17 23:26:35,712 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 110 transitions, 268 flow [2021-12-17 23:26:35,717 INFO L129 PetriNetUnfolder]: 5/65 cut-off events. [2021-12-17 23:26:35,717 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 23:26:35,718 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:26:35,718 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 23:26:35,718 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 23:26:35,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:26:35,719 INFO L85 PathProgramCache]: Analyzing trace with hash -341074863, now seen corresponding path program 1 times [2021-12-17 23:26:35,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:26:35,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614504748] [2021-12-17 23:26:35,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:26:35,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:26:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:26:35,760 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 23:26:35,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:26:35,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614504748] [2021-12-17 23:26:35,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614504748] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:26:35,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:26:35,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 23:26:35,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523279530] [2021-12-17 23:26:35,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:26:35,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 23:26:35,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:26:35,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 23:26:35,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 23:26:35,763 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 110 [2021-12-17 23:26:35,764 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 23:26:35,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:26:35,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 110 [2021-12-17 23:26:35,764 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:26:35,849 INFO L129 PetriNetUnfolder]: 57/600 cut-off events. [2021-12-17 23:26:35,849 INFO L130 PetriNetUnfolder]: For 212/212 co-relation queries the response was YES. [2021-12-17 23:26:35,850 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 23:26:35,851 INFO L132 encePairwiseOnDemand]: 104/110 looper letters, 12 selfloop transitions, 0 changer transitions 0/102 dead transitions. [2021-12-17 23:26:35,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 102 transitions, 276 flow [2021-12-17 23:26:35,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 23:26:35,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-17 23:26:35,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 198 transitions. [2021-12-17 23:26:35,856 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9 [2021-12-17 23:26:35,856 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 198 transitions. [2021-12-17 23:26:35,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 198 transitions. [2021-12-17 23:26:35,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:26:35,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 198 transitions. [2021-12-17 23:26:35,858 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 23:26:35,859 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 23:26:35,860 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 23:26:35,860 INFO L186 Difference]: Start difference. First operand has 105 places, 110 transitions, 268 flow. Second operand 2 states and 198 transitions. [2021-12-17 23:26:35,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 102 transitions, 276 flow [2021-12-17 23:26:35,863 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 23:26:35,865 INFO L242 Difference]: Finished difference. Result has 104 places, 102 transitions, 252 flow [2021-12-17 23:26:35,865 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 23:26:35,867 INFO L334 CegarLoopForPetriNet]: 105 programPoint places, -1 predicate places. [2021-12-17 23:26:35,867 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 102 transitions, 252 flow [2021-12-17 23:26:35,867 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 23:26:35,867 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:26:35,868 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 23:26:35,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 23:26:35,868 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 23:26:35,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:26:35,868 INFO L85 PathProgramCache]: Analyzing trace with hash -537588368, now seen corresponding path program 1 times [2021-12-17 23:26:35,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:26:35,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740073264] [2021-12-17 23:26:35,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:26:35,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:26:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:26:35,972 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 23:26:35,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:26:35,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740073264] [2021-12-17 23:26:35,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740073264] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:26:35,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:26:35,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 23:26:35,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168926424] [2021-12-17 23:26:35,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:26:35,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 23:26:35,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:26:35,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 23:26:35,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 23:26:35,976 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2021-12-17 23:26:35,977 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 23:26:35,977 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:26:35,977 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2021-12-17 23:26:35,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:26:36,165 INFO L129 PetriNetUnfolder]: 58/575 cut-off events. [2021-12-17 23:26:36,165 INFO L130 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2021-12-17 23:26:36,166 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 23:26:36,168 INFO L132 encePairwiseOnDemand]: 98/110 looper letters, 53 selfloop transitions, 8 changer transitions 0/126 dead transitions. [2021-12-17 23:26:36,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 126 transitions, 446 flow [2021-12-17 23:26:36,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 23:26:36,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 23:26:36,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2021-12-17 23:26:36,170 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7878787878787878 [2021-12-17 23:26:36,170 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2021-12-17 23:26:36,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2021-12-17 23:26:36,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:26:36,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2021-12-17 23:26:36,171 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 23:26:36,173 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 23:26:36,173 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 23:26:36,173 INFO L186 Difference]: Start difference. First operand has 104 places, 102 transitions, 252 flow. Second operand 3 states and 260 transitions. [2021-12-17 23:26:36,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 126 transitions, 446 flow [2021-12-17 23:26:36,177 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 23:26:36,181 INFO L242 Difference]: Finished difference. Result has 107 places, 106 transitions, 300 flow [2021-12-17 23:26:36,182 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 23:26:36,183 INFO L334 CegarLoopForPetriNet]: 105 programPoint places, 2 predicate places. [2021-12-17 23:26:36,183 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 106 transitions, 300 flow [2021-12-17 23:26:36,183 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 23:26:36,184 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:26:36,184 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 23:26:36,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 23:26:36,184 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 23:26:36,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:26:36,187 INFO L85 PathProgramCache]: Analyzing trace with hash 853052668, now seen corresponding path program 1 times [2021-12-17 23:26:36,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:26:36,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019192838] [2021-12-17 23:26:36,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:26:36,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:26:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:26:36,268 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 23:26:36,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:26:36,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019192838] [2021-12-17 23:26:36,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019192838] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 23:26:36,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098056944] [2021-12-17 23:26:36,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:26:36,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:26:36,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:26:36,273 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 23:26:36,274 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 23:26:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:26:36,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 23:26:36,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 23:26:36,506 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 23:26:36,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 23:26:36,623 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 23:26:36,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098056944] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 23:26:36,624 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 23:26:36,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-12-17 23:26:36,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791656700] [2021-12-17 23:26:36,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 23:26:36,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 23:26:36,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:26:36,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 23:26:36,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-17 23:26:36,630 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 110 [2021-12-17 23:26:36,631 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 23:26:36,631 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:26:36,631 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 110 [2021-12-17 23:26:36,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:26:36,698 INFO L129 PetriNetUnfolder]: 0/57 cut-off events. [2021-12-17 23:26:36,698 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-12-17 23:26:36,698 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 23:26:36,698 INFO L132 encePairwiseOnDemand]: 105/110 looper letters, 10 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2021-12-17 23:26:36,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 51 transitions, 156 flow [2021-12-17 23:26:36,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 23:26:36,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-17 23:26:36,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 586 transitions. [2021-12-17 23:26:36,701 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.591919191919192 [2021-12-17 23:26:36,701 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 586 transitions. [2021-12-17 23:26:36,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 586 transitions. [2021-12-17 23:26:36,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:26:36,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 586 transitions. [2021-12-17 23:26:36,703 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 23:26:36,705 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 23:26:36,706 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 23:26:36,706 INFO L186 Difference]: Start difference. First operand has 107 places, 106 transitions, 300 flow. Second operand 9 states and 586 transitions. [2021-12-17 23:26:36,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 51 transitions, 156 flow [2021-12-17 23:26:36,707 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 23:26:36,708 INFO L242 Difference]: Finished difference. Result has 62 places, 47 transitions, 124 flow [2021-12-17 23:26:36,708 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 23:26:36,709 INFO L334 CegarLoopForPetriNet]: 105 programPoint places, -43 predicate places. [2021-12-17 23:26:36,709 INFO L470 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 124 flow [2021-12-17 23:26:36,709 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 23:26:36,710 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:26:36,710 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 23:26:36,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-17 23:26:36,931 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 23:26:36,932 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 23:26:36,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:26:36,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1479036618, now seen corresponding path program 1 times [2021-12-17 23:26:36,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:26:36,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138756590] [2021-12-17 23:26:36,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:26:36,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:26:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 23:26:36,948 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 23:26:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 23:26:36,965 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 23:26:36,969 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 23:26:36,969 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATION (4 of 5 remaining) [2021-12-17 23:26:36,969 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2021-12-17 23:26:36,970 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 5 remaining) [2021-12-17 23:26:36,970 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2021-12-17 23:26:36,970 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2021-12-17 23:26:36,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 23:26:36,971 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-12-17 23:26:36,971 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-17 23:26:36,971 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-12-17 23:26:36,983 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,984 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,984 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,984 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,984 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,984 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,984 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,985 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,985 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,985 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,986 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,986 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,986 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,986 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,986 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,987 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,987 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,987 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,987 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,987 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,987 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,988 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,988 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,988 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,988 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,988 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,988 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,988 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,989 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,989 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,989 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,989 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,989 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,989 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,990 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,990 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,990 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,990 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,990 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,990 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,991 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,991 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,991 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,991 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,991 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,991 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,991 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,992 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,992 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,992 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,992 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,992 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,993 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,993 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,993 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,993 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,993 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,994 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,994 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,994 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,994 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,994 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,994 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,995 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,995 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,995 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,995 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,995 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,995 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,995 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,996 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,996 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,996 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,996 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,996 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,997 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,997 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,997 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,997 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,997 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,998 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,998 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of3ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,998 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of3ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,998 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,999 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,999 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,999 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:36,999 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:37,000 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:37,000 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:37,000 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:37,000 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:37,001 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of3ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:37,001 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:37,001 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:37,001 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of3ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:37,009 INFO L148 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2021-12-17 23:26:37,011 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 23:26:37,018 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 23:26:37,018 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-17 23:26:37,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 123 places, 129 transitions, 336 flow [2021-12-17 23:26:37,252 INFO L129 PetriNetUnfolder]: 496/2280 cut-off events. [2021-12-17 23:26:37,252 INFO L130 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2021-12-17 23:26:37,263 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 23:26:37,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 129 transitions, 336 flow [2021-12-17 23:26:37,276 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 129 transitions, 336 flow [2021-12-17 23:26:37,282 INFO L129 PetriNetUnfolder]: 6/68 cut-off events. [2021-12-17 23:26:37,282 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 23:26:37,282 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:26:37,282 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 23:26:37,283 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 23:26:37,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:26:37,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1099185159, now seen corresponding path program 1 times [2021-12-17 23:26:37,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:26:37,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094651736] [2021-12-17 23:26:37,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:26:37,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:26:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:26:37,314 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 23:26:37,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:26:37,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094651736] [2021-12-17 23:26:37,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094651736] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:26:37,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:26:37,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 23:26:37,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773243589] [2021-12-17 23:26:37,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:26:37,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 23:26:37,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:26:37,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 23:26:37,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 23:26:37,317 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 129 [2021-12-17 23:26:37,318 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 23:26:37,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:26:37,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 129 [2021-12-17 23:26:37,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:26:37,912 INFO L129 PetriNetUnfolder]: 444/2469 cut-off events. [2021-12-17 23:26:37,913 INFO L130 PetriNetUnfolder]: For 592/592 co-relation queries the response was YES. [2021-12-17 23:26:37,919 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 23:26:37,930 INFO L132 encePairwiseOnDemand]: 110/129 looper letters, 63 selfloop transitions, 8 changer transitions 0/147 dead transitions. [2021-12-17 23:26:37,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 147 transitions, 550 flow [2021-12-17 23:26:37,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 23:26:37,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 23:26:37,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 317 transitions. [2021-12-17 23:26:37,932 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8191214470284238 [2021-12-17 23:26:37,933 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 317 transitions. [2021-12-17 23:26:37,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 317 transitions. [2021-12-17 23:26:37,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:26:37,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 317 transitions. [2021-12-17 23:26:37,934 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 23:26:37,935 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 23:26:37,936 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 23:26:37,936 INFO L186 Difference]: Start difference. First operand has 123 places, 129 transitions, 336 flow. Second operand 3 states and 317 transitions. [2021-12-17 23:26:37,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 147 transitions, 550 flow [2021-12-17 23:26:37,940 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 23:26:37,942 INFO L242 Difference]: Finished difference. Result has 123 places, 123 transitions, 364 flow [2021-12-17 23:26:37,942 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 23:26:37,944 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, 0 predicate places. [2021-12-17 23:26:37,944 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 123 transitions, 364 flow [2021-12-17 23:26:37,944 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 23:26:37,944 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:26:37,944 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 23:26:37,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 23:26:37,945 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 23:26:37,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:26:37,945 INFO L85 PathProgramCache]: Analyzing trace with hash -524673210, now seen corresponding path program 1 times [2021-12-17 23:26:37,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:26:37,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724774960] [2021-12-17 23:26:37,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:26:37,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:26:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:26:37,994 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 23:26:37,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:26:37,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724774960] [2021-12-17 23:26:37,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724774960] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 23:26:37,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162586329] [2021-12-17 23:26:37,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:26:37,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:26:37,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:26:38,000 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 23:26:38,015 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 23:26:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:26:38,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 23:26:38,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 23:26:38,183 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 23:26:38,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 23:26:38,272 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 23:26:38,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162586329] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 23:26:38,273 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 23:26:38,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-12-17 23:26:38,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339684133] [2021-12-17 23:26:38,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 23:26:38,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 23:26:38,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:26:38,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 23:26:38,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-17 23:26:38,276 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 129 [2021-12-17 23:26:38,277 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 23:26:38,277 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:26:38,278 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 129 [2021-12-17 23:26:38,278 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:26:38,740 INFO L129 PetriNetUnfolder]: 423/2263 cut-off events. [2021-12-17 23:26:38,740 INFO L130 PetriNetUnfolder]: For 683/683 co-relation queries the response was YES. [2021-12-17 23:26:38,747 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 23:26:38,757 INFO L132 encePairwiseOnDemand]: 114/129 looper letters, 59 selfloop transitions, 21 changer transitions 0/154 dead transitions. [2021-12-17 23:26:38,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 154 transitions, 624 flow [2021-12-17 23:26:38,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 23:26:38,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-17 23:26:38,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 822 transitions. [2021-12-17 23:26:38,760 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6372093023255814 [2021-12-17 23:26:38,760 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 822 transitions. [2021-12-17 23:26:38,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 822 transitions. [2021-12-17 23:26:38,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:26:38,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 822 transitions. [2021-12-17 23:26:38,762 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 23:26:38,765 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 23:26:38,765 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 23:26:38,765 INFO L186 Difference]: Start difference. First operand has 123 places, 123 transitions, 364 flow. Second operand 10 states and 822 transitions. [2021-12-17 23:26:38,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 154 transitions, 624 flow [2021-12-17 23:26:38,769 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 23:26:38,771 INFO L242 Difference]: Finished difference. Result has 134 places, 132 transitions, 456 flow [2021-12-17 23:26:38,771 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 23:26:38,773 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, 11 predicate places. [2021-12-17 23:26:38,773 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 132 transitions, 456 flow [2021-12-17 23:26:38,773 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 23:26:38,774 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:26:38,774 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 23:26:38,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-17 23:26:38,998 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 23:26:38,998 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 23:26:38,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:26:38,999 INFO L85 PathProgramCache]: Analyzing trace with hash 531540147, now seen corresponding path program 1 times [2021-12-17 23:26:38,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:26:38,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631110737] [2021-12-17 23:26:38,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:26:38,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:26:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 23:26:39,012 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 23:26:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 23:26:39,041 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 23:26:39,041 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 23:26:39,042 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (5 of 6 remaining) [2021-12-17 23:26:39,042 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-12-17 23:26:39,042 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 6 remaining) [2021-12-17 23:26:39,042 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-12-17 23:26:39,042 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-12-17 23:26:39,042 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-12-17 23:26:39,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 23:26:39,043 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-17 23:26:39,043 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-17 23:26:39,043 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-12-17 23:26:39,062 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,063 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,063 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,063 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,063 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,063 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,063 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,064 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,064 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,064 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,064 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,064 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,064 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,064 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,065 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,065 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,065 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,065 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,065 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,065 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,065 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,065 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,066 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,066 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,066 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,066 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,066 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,067 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,067 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,067 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,067 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,068 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,068 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,068 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,069 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,069 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,069 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,069 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,069 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,069 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,069 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,069 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,070 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,070 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,070 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,070 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,070 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,070 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,071 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,071 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,071 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,071 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,071 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,071 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,071 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,071 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,072 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,072 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,072 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,072 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,073 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,073 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,073 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,073 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,073 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,073 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,074 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,074 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,074 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,074 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,074 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,074 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,074 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,075 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,075 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,075 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,075 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,075 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,075 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,075 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,075 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,076 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,076 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,076 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,076 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,076 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,076 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,076 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,077 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#in~param.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,077 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#in~param.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,077 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,077 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,077 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,077 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,077 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,077 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,081 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,082 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,082 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,082 WARN L322 ript$VariableManager]: TermVariabe setThreadThread1of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,082 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,082 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,082 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,082 WARN L322 ript$VariableManager]: TermVariabe setThreadThread2of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,083 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,083 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,083 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,083 WARN L322 ript$VariableManager]: TermVariabe setThreadThread3of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,083 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of4ForFork0_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,083 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,084 WARN L322 ript$VariableManager]: TermVariabe |setThreadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,084 WARN L322 ript$VariableManager]: TermVariabe setThreadThread4of4ForFork0_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,084 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,084 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,084 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,084 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread1of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,085 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,085 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,085 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,085 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread2of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,085 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,085 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread3of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,085 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,085 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,086 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of4ForFork1_~param.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,086 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,086 WARN L322 ript$VariableManager]: TermVariabe checkThreadThread4of4ForFork1_~param.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,086 WARN L322 ript$VariableManager]: TermVariabe |checkThreadThread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:26:39,089 INFO L148 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-12-17 23:26:39,090 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 23:26:39,090 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 23:26:39,090 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-12-17 23:26:39,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 141 places, 148 transitions, 408 flow [2021-12-17 23:26:40,156 INFO L129 PetriNetUnfolder]: 2379/8746 cut-off events. [2021-12-17 23:26:40,156 INFO L130 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2021-12-17 23:26:40,218 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 23:26:40,218 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 148 transitions, 408 flow [2021-12-17 23:26:40,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 148 transitions, 408 flow [2021-12-17 23:26:40,314 INFO L129 PetriNetUnfolder]: 5/64 cut-off events. [2021-12-17 23:26:40,314 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 23:26:40,315 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:26:40,315 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 23:26:40,315 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 23:26:40,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:26:40,316 INFO L85 PathProgramCache]: Analyzing trace with hash 404176023, now seen corresponding path program 1 times [2021-12-17 23:26:40,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:26:40,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986965826] [2021-12-17 23:26:40,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:26:40,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:26:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:26:40,338 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 23:26:40,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:26:40,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986965826] [2021-12-17 23:26:40,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986965826] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:26:40,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:26:40,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 23:26:40,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887668139] [2021-12-17 23:26:40,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:26:40,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 23:26:40,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:26:40,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 23:26:40,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 23:26:40,341 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 148 [2021-12-17 23:26:40,342 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 23:26:40,342 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:26:40,342 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 148 [2021-12-17 23:26:40,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:26:41,661 INFO L129 PetriNetUnfolder]: 1817/8164 cut-off events. [2021-12-17 23:26:41,661 INFO L130 PetriNetUnfolder]: For 6300/6300 co-relation queries the response was YES. [2021-12-17 23:26:41,686 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 23:26:41,713 INFO L132 encePairwiseOnDemand]: 140/148 looper letters, 24 selfloop transitions, 0 changer transitions 0/136 dead transitions. [2021-12-17 23:26:41,714 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 136 transitions, 432 flow [2021-12-17 23:26:41,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 23:26:41,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-17 23:26:41,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 256 transitions. [2021-12-17 23:26:41,715 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8648648648648649 [2021-12-17 23:26:41,715 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 256 transitions. [2021-12-17 23:26:41,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 256 transitions. [2021-12-17 23:26:41,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:26:41,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 256 transitions. [2021-12-17 23:26:41,718 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 23:26:41,719 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 23:26:41,719 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 23:26:41,719 INFO L186 Difference]: Start difference. First operand has 141 places, 148 transitions, 408 flow. Second operand 2 states and 256 transitions. [2021-12-17 23:26:41,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 136 transitions, 432 flow [2021-12-17 23:26:41,721 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 23:26:41,723 INFO L242 Difference]: Finished difference. Result has 138 places, 136 transitions, 384 flow [2021-12-17 23:26:41,723 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 23:26:41,726 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, -3 predicate places. [2021-12-17 23:26:41,726 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 136 transitions, 384 flow [2021-12-17 23:26:41,726 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 23:26:41,726 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:26:41,726 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 23:26:41,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 23:26:41,727 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 23:26:41,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:26:41,727 INFO L85 PathProgramCache]: Analyzing trace with hash 207662518, now seen corresponding path program 1 times [2021-12-17 23:26:41,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:26:41,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231031072] [2021-12-17 23:26:41,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:26:41,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:26:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:26:41,864 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 23:26:41,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:26:41,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231031072] [2021-12-17 23:26:41,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231031072] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:26:41,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:26:41,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 23:26:41,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492614022] [2021-12-17 23:26:41,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:26:41,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 23:26:41,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:26:41,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 23:26:41,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 23:26:41,867 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 148 [2021-12-17 23:26:41,867 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 23:26:41,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:26:41,868 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 148 [2021-12-17 23:26:41,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:26:43,353 INFO L129 PetriNetUnfolder]: 2570/10361 cut-off events. [2021-12-17 23:26:43,353 INFO L130 PetriNetUnfolder]: For 3152/3152 co-relation queries the response was YES. [2021-12-17 23:26:43,387 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 23:26:43,429 INFO L132 encePairwiseOnDemand]: 136/148 looper letters, 73 selfloop transitions, 8 changer transitions 0/168 dead transitions. [2021-12-17 23:26:43,429 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 168 transitions, 658 flow [2021-12-17 23:26:43,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 23:26:43,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 23:26:43,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2021-12-17 23:26:43,431 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7792792792792793 [2021-12-17 23:26:43,431 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2021-12-17 23:26:43,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2021-12-17 23:26:43,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:26:43,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2021-12-17 23:26:43,433 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 23:26:43,434 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 23:26:43,434 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 23:26:43,434 INFO L186 Difference]: Start difference. First operand has 138 places, 136 transitions, 384 flow. Second operand 3 states and 346 transitions. [2021-12-17 23:26:43,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 168 transitions, 658 flow [2021-12-17 23:26:43,438 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 23:26:43,440 INFO L242 Difference]: Finished difference. Result has 141 places, 140 transitions, 432 flow [2021-12-17 23:26:43,440 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 23:26:43,441 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 0 predicate places. [2021-12-17 23:26:43,441 INFO L470 AbstractCegarLoop]: Abstraction has has 141 places, 140 transitions, 432 flow [2021-12-17 23:26:43,441 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 23:26:43,442 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:26:43,442 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 23:26:43,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 23:26:43,442 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 23:26:43,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:26:43,443 INFO L85 PathProgramCache]: Analyzing trace with hash 676761736, now seen corresponding path program 1 times [2021-12-17 23:26:43,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:26:43,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788290711] [2021-12-17 23:26:43,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:26:43,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:26:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:26:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:26:43,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:26:43,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788290711] [2021-12-17 23:26:43,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788290711] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 23:26:43,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378973137] [2021-12-17 23:26:43,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:26:43,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:26:43,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:26:43,478 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 23:26:43,479 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 23:26:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:26:43,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 23:26:43,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 23:26:43,626 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 23:26:43,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 23:26:43,699 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 23:26:43,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378973137] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 23:26:43,700 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 23:26:43,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-12-17 23:26:43,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997763443] [2021-12-17 23:26:43,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 23:26:43,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 23:26:43,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:26:43,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 23:26:43,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-17 23:26:43,705 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 148 [2021-12-17 23:26:43,706 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 23:26:43,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:26:43,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 148 [2021-12-17 23:26:43,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:26:45,227 INFO L129 PetriNetUnfolder]: 2538/10077 cut-off events. [2021-12-17 23:26:45,227 INFO L130 PetriNetUnfolder]: For 3601/3601 co-relation queries the response was YES. [2021-12-17 23:26:45,255 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 23:26:45,297 INFO L132 encePairwiseOnDemand]: 133/148 looper letters, 69 selfloop transitions, 21 changer transitions 0/175 dead transitions. [2021-12-17 23:26:45,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 175 transitions, 732 flow [2021-12-17 23:26:45,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 23:26:45,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-17 23:26:45,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 942 transitions. [2021-12-17 23:26:45,300 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6364864864864865 [2021-12-17 23:26:45,300 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 942 transitions. [2021-12-17 23:26:45,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 942 transitions. [2021-12-17 23:26:45,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:26:45,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 942 transitions. [2021-12-17 23:26:45,303 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 23:26:45,306 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 23:26:45,306 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 23:26:45,306 INFO L186 Difference]: Start difference. First operand has 141 places, 140 transitions, 432 flow. Second operand 10 states and 942 transitions. [2021-12-17 23:26:45,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 175 transitions, 732 flow [2021-12-17 23:26:45,316 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 23:26:45,319 INFO L242 Difference]: Finished difference. Result has 152 places, 149 transitions, 524 flow [2021-12-17 23:26:45,319 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 23:26:45,320 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 11 predicate places. [2021-12-17 23:26:45,320 INFO L470 AbstractCegarLoop]: Abstraction has has 152 places, 149 transitions, 524 flow [2021-12-17 23:26:45,320 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 23:26:45,321 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:26:45,321 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 23:26:45,349 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 23:26:45,535 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 23:26:45,535 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 23:26:45,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:26:45,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1377560969, now seen corresponding path program 1 times [2021-12-17 23:26:45,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:26:45,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843632099] [2021-12-17 23:26:45,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:26:45,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:26:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:26:45,596 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 23:26:45,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:26:45,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843632099] [2021-12-17 23:26:45,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843632099] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:26:45,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:26:45,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 23:26:45,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040306365] [2021-12-17 23:26:45,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:26:45,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 23:26:45,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:26:45,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 23:26:45,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 23:26:45,599 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 148 [2021-12-17 23:26:45,600 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 23:26:45,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:26:45,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 148 [2021-12-17 23:26:45,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand