./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg --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 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:06:06,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:06:06,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:06:06,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:06:06,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:06:06,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:06:06,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:06:06,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:06:06,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:06:06,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:06:06,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:06:06,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:06:06,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:06:06,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:06:06,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:06:06,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:06:06,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:06:06,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:06:06,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:06:06,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:06:06,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:06:06,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:06:06,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:06:06,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:06:06,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:06:06,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:06:06,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:06:06,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:06:06,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:06:06,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:06:06,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:06:06,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:06:06,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:06:06,483 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:06:06,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:06:06,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:06:06,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:06:06,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:06:06,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:06:06,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:06:06,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:06:06,488 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:06:06,530 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:06:06,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:06:06,531 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:06:06,531 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:06:06,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:06:06,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:06:06,540 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:06:06,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:06:06,541 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:06:06,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:06:06,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:06:06,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:06:06,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:06:06,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:06:06,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:06:06,543 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:06:06,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:06:06,544 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:06:06,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:06:06,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:06:06,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:06:06,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:06:06,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:06:06,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:06:06,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:06:06,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:06:06,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:06:06,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:06:06,546 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:06:06,548 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:06:06,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:06:06,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:06:06,549 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 [2021-10-28 09:06:06,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:06:06,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:06:06,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:06:06,872 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:06:06,873 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:06:06,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2021-10-28 09:06:06,967 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/data/d9cf32df1/ba69ee3af57a4553a403b68385f006c0/FLAG2b931cf17 [2021-10-28 09:06:07,495 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:06:07,495 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2021-10-28 09:06:07,503 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/data/d9cf32df1/ba69ee3af57a4553a403b68385f006c0/FLAG2b931cf17 [2021-10-28 09:06:07,831 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/data/d9cf32df1/ba69ee3af57a4553a403b68385f006c0 [2021-10-28 09:06:07,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:06:07,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:06:07,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:06:07,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:06:07,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:06:07,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:06:07" (1/1) ... [2021-10-28 09:06:07,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c13e6f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:07, skipping insertion in model container [2021-10-28 09:06:07,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:06:07" (1/1) ... [2021-10-28 09:06:07,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:06:07,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:06:08,109 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/sv-benchmarks/c/weaver/array-eq-trans.wvr.c[2737,2750] [2021-10-28 09:06:08,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:06:08,129 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:06:08,156 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/sv-benchmarks/c/weaver/array-eq-trans.wvr.c[2737,2750] [2021-10-28 09:06:08,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:06:08,192 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:06:08,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:08 WrapperNode [2021-10-28 09:06:08,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:06:08,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:06:08,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:06:08,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:06:08,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:08" (1/1) ... [2021-10-28 09:06:08,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:08" (1/1) ... [2021-10-28 09:06:08,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:06:08,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:06:08,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:06:08,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:06:08,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:08" (1/1) ... [2021-10-28 09:06:08,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:08" (1/1) ... [2021-10-28 09:06:08,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:08" (1/1) ... [2021-10-28 09:06:08,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:08" (1/1) ... [2021-10-28 09:06:08,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:08" (1/1) ... [2021-10-28 09:06:08,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:08" (1/1) ... [2021-10-28 09:06:08,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:08" (1/1) ... [2021-10-28 09:06:08,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:06:08,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:06:08,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:06:08,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:06:08,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:08" (1/1) ... [2021-10-28 09:06:08,330 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:06:08,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:06:08,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:06:08,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:06:08,435 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-28 09:06:08,435 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-28 09:06:08,435 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-28 09:06:08,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-28 09:06:08,436 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-28 09:06:08,437 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-28 09:06:08,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:06:08,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:06:08,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:06:08,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:06:08,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:06:08,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:06:08,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:06:08,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:06:08,442 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 09:06:09,092 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:06:09,094 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-10-28 09:06:09,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:06:09 BoogieIcfgContainer [2021-10-28 09:06:09,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:06:09,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:06:09,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:06:09,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:06:09,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:06:07" (1/3) ... [2021-10-28 09:06:09,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd05a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:06:09, skipping insertion in model container [2021-10-28 09:06:09,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:08" (2/3) ... [2021-10-28 09:06:09,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd05a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:06:09, skipping insertion in model container [2021-10-28 09:06:09,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:06:09" (3/3) ... [2021-10-28 09:06:09,130 INFO L111 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2021-10-28 09:06:09,135 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 09:06:09,136 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:06:09,136 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:06:09,136 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 09:06:09,186 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,187 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,187 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,187 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,187 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,188 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,188 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,188 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,189 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,189 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,189 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,190 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,190 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,190 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,190 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,191 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,191 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,191 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,192 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,192 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,192 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,192 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,193 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,193 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,193 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,193 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,194 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,194 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,194 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,194 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,195 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,196 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,196 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,196 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,197 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,197 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,197 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,206 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,206 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,206 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,207 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,207 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,207 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,207 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,208 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,208 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,208 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,209 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,209 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,209 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,209 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,210 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,210 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,210 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,210 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,211 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,211 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,211 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,211 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,212 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,213 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,213 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,213 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,213 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,214 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,214 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,214 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,215 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,216 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,216 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,217 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,217 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,218 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,220 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,221 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,221 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,221 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,222 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,222 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,222 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,222 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,222 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,223 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,223 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,223 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,223 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,223 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,224 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,224 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,224 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,227 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,227 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,228 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,228 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,228 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,242 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,243 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,243 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,243 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,243 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,248 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,248 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,248 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,249 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,249 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:09,267 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-28 09:06:09,346 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:06:09,353 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 [2021-10-28 09:06:09,353 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-28 09:06:09,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 258 places, 278 transitions, 580 flow [2021-10-28 09:06:09,527 INFO L129 PetriNetUnfolder]: 30/275 cut-off events. [2021-10-28 09:06:09,528 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-28 09:06:09,534 INFO L84 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 275 events. 30/275 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 245 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 180. Up to 3 conditions per place. [2021-10-28 09:06:09,535 INFO L82 GeneralOperation]: Start removeDead. Operand has 258 places, 278 transitions, 580 flow [2021-10-28 09:06:09,544 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 265 transitions, 548 flow [2021-10-28 09:06:09,607 INFO L129 PetriNetUnfolder]: 30/264 cut-off events. [2021-10-28 09:06:09,607 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-28 09:06:09,607 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:06:09,608 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:09,617 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:06:09,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:09,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1735092669, now seen corresponding path program 1 times [2021-10-28 09:06:09,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:09,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718083589] [2021-10-28 09:06:09,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:09,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:09,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:09,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:09,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718083589] [2021-10-28 09:06:09,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718083589] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:09,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:09,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:06:09,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460682975] [2021-10-28 09:06:09,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:06:09,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:10,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:06:10,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:06:10,010 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 278 [2021-10-28 09:06:10,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 265 transitions, 548 flow. Second operand has 2 states, 2 states have (on average 264.5) internal successors, (529), 2 states have internal predecessors, (529), 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) [2021-10-28 09:06:10,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:06:10,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 278 [2021-10-28 09:06:10,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:06:10,070 INFO L129 PetriNetUnfolder]: 15/250 cut-off events. [2021-10-28 09:06:10,070 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-28 09:06:10,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 250 events. 15/250 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 210 event pairs, 0 based on Foata normal form. 15/241 useless extension candidates. Maximal degree in co-relation 259. Up to 2 conditions per place. [2021-10-28 09:06:10,074 INFO L132 encePairwiseOnDemand]: 263/278 looper letters, 0 selfloop transitions, 0 changer transitions 9/250 dead transitions. [2021-10-28 09:06:10,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 250 transitions, 518 flow [2021-10-28 09:06:10,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:06:10,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-28 09:06:10,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 539 transitions. [2021-10-28 09:06:10,112 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9694244604316546 [2021-10-28 09:06:10,114 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 539 transitions. [2021-10-28 09:06:10,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 539 transitions. [2021-10-28 09:06:10,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:06:10,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 539 transitions. [2021-10-28 09:06:10,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 269.5) internal successors, (539), 2 states have internal predecessors, (539), 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) [2021-10-28 09:06:10,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 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) [2021-10-28 09:06:10,143 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 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) [2021-10-28 09:06:10,144 INFO L186 Difference]: Start difference. First operand has 245 places, 265 transitions, 548 flow. Second operand 2 states and 539 transitions. [2021-10-28 09:06:10,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 250 transitions, 518 flow [2021-10-28 09:06:10,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 250 transitions, 506 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-10-28 09:06:10,156 INFO L242 Difference]: Finished difference. Result has 240 places, 241 transitions, 488 flow [2021-10-28 09:06:10,159 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=488, PETRI_PLACES=240, PETRI_TRANSITIONS=241} [2021-10-28 09:06:10,159 INFO L334 CegarLoopForPetriNet]: 245 programPoint places, -5 predicate places. [2021-10-28 09:06:10,160 INFO L470 AbstractCegarLoop]: Abstraction has has 240 places, 241 transitions, 488 flow [2021-10-28 09:06:10,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 264.5) internal successors, (529), 2 states have internal predecessors, (529), 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) [2021-10-28 09:06:10,160 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:06:10,161 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:10,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:06:10,161 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:06:10,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:10,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1753353712, now seen corresponding path program 1 times [2021-10-28 09:06:10,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:10,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950860669] [2021-10-28 09:06:10,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:10,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:10,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:10,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:10,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950860669] [2021-10-28 09:06:10,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950860669] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:10,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:10,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:06:10,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119762460] [2021-10-28 09:06:10,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:06:10,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:10,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:06:10,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:06:10,439 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 278 [2021-10-28 09:06:10,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 241 transitions, 488 flow. Second operand has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 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) [2021-10-28 09:06:10,455 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:06:10,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 278 [2021-10-28 09:06:10,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:06:10,617 INFO L129 PetriNetUnfolder]: 14/244 cut-off events. [2021-10-28 09:06:10,617 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:06:10,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 244 events. 14/244 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 199 event pairs, 0 based on Foata normal form. 1/230 useless extension candidates. Maximal degree in co-relation 292. Up to 42 conditions per place. [2021-10-28 09:06:10,620 INFO L132 encePairwiseOnDemand]: 274/278 looper letters, 41 selfloop transitions, 0 changer transitions 4/244 dead transitions. [2021-10-28 09:06:10,621 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 244 transitions, 584 flow [2021-10-28 09:06:10,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:06:10,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-28 09:06:10,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1101 transitions. [2021-10-28 09:06:10,634 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7920863309352518 [2021-10-28 09:06:10,635 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1101 transitions. [2021-10-28 09:06:10,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1101 transitions. [2021-10-28 09:06:10,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:06:10,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1101 transitions. [2021-10-28 09:06:10,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 220.2) internal successors, (1101), 5 states have internal predecessors, (1101), 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) [2021-10-28 09:06:10,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 278.0) internal successors, (1668), 6 states have internal predecessors, (1668), 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) [2021-10-28 09:06:10,646 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 278.0) internal successors, (1668), 6 states have internal predecessors, (1668), 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) [2021-10-28 09:06:10,647 INFO L186 Difference]: Start difference. First operand has 240 places, 241 transitions, 488 flow. Second operand 5 states and 1101 transitions. [2021-10-28 09:06:10,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 244 transitions, 584 flow [2021-10-28 09:06:10,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 244 transitions, 584 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-28 09:06:10,663 INFO L242 Difference]: Finished difference. Result has 238 places, 240 transitions, 492 flow [2021-10-28 09:06:10,665 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=492, PETRI_PLACES=238, PETRI_TRANSITIONS=240} [2021-10-28 09:06:10,668 INFO L334 CegarLoopForPetriNet]: 245 programPoint places, -7 predicate places. [2021-10-28 09:06:10,669 INFO L470 AbstractCegarLoop]: Abstraction has has 238 places, 240 transitions, 492 flow [2021-10-28 09:06:10,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 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) [2021-10-28 09:06:10,670 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:06:10,670 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:10,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:06:10,671 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:06:10,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:10,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1364304456, now seen corresponding path program 1 times [2021-10-28 09:06:10,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:10,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801047329] [2021-10-28 09:06:10,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:10,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:10,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:10,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:10,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801047329] [2021-10-28 09:06:11,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801047329] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:11,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:11,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:06:11,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659410761] [2021-10-28 09:06:11,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:06:11,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:11,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:06:11,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:06:11,009 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 278 [2021-10-28 09:06:11,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 240 transitions, 492 flow. Second operand has 7 states, 7 states have (on average 228.57142857142858) internal successors, (1600), 7 states have internal predecessors, (1600), 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) [2021-10-28 09:06:11,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:06:11,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 278 [2021-10-28 09:06:11,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:06:11,377 INFO L129 PetriNetUnfolder]: 166/798 cut-off events. [2021-10-28 09:06:11,377 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:06:11,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 798 events. 166/798 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3525 event pairs, 55 based on Foata normal form. 1/696 useless extension candidates. Maximal degree in co-relation 1104. Up to 120 conditions per place. [2021-10-28 09:06:11,392 INFO L132 encePairwiseOnDemand]: 267/278 looper letters, 83 selfloop transitions, 9 changer transitions 4/301 dead transitions. [2021-10-28 09:06:11,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 301 transitions, 810 flow [2021-10-28 09:06:11,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:06:11,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 09:06:11,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1679 transitions. [2021-10-28 09:06:11,399 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8627954779033916 [2021-10-28 09:06:11,400 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1679 transitions. [2021-10-28 09:06:11,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1679 transitions. [2021-10-28 09:06:11,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:06:11,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1679 transitions. [2021-10-28 09:06:11,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 239.85714285714286) internal successors, (1679), 7 states have internal predecessors, (1679), 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) [2021-10-28 09:06:11,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 278.0) internal successors, (2224), 8 states have internal predecessors, (2224), 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) [2021-10-28 09:06:11,415 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 278.0) internal successors, (2224), 8 states have internal predecessors, (2224), 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) [2021-10-28 09:06:11,415 INFO L186 Difference]: Start difference. First operand has 238 places, 240 transitions, 492 flow. Second operand 7 states and 1679 transitions. [2021-10-28 09:06:11,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 301 transitions, 810 flow [2021-10-28 09:06:11,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 301 transitions, 800 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-10-28 09:06:11,426 INFO L242 Difference]: Finished difference. Result has 242 places, 245 transitions, 539 flow [2021-10-28 09:06:11,427 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=539, PETRI_PLACES=242, PETRI_TRANSITIONS=245} [2021-10-28 09:06:11,427 INFO L334 CegarLoopForPetriNet]: 245 programPoint places, -3 predicate places. [2021-10-28 09:06:11,428 INFO L470 AbstractCegarLoop]: Abstraction has has 242 places, 245 transitions, 539 flow [2021-10-28 09:06:11,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 228.57142857142858) internal successors, (1600), 7 states have internal predecessors, (1600), 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) [2021-10-28 09:06:11,430 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:06:11,430 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:11,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:06:11,431 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:06:11,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:11,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1329735945, now seen corresponding path program 1 times [2021-10-28 09:06:11,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:11,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882478835] [2021-10-28 09:06:11,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:11,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:11,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:11,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:11,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882478835] [2021-10-28 09:06:11,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882478835] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:11,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:11,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:06:11,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310092074] [2021-10-28 09:06:11,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:06:11,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:11,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:06:11,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:06:11,656 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 278 [2021-10-28 09:06:11,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 245 transitions, 539 flow. Second operand has 6 states, 6 states have (on average 213.33333333333334) internal successors, (1280), 6 states have internal predecessors, (1280), 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) [2021-10-28 09:06:11,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:06:11,659 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 278 [2021-10-28 09:06:11,659 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:06:11,813 INFO L129 PetriNetUnfolder]: 26/415 cut-off events. [2021-10-28 09:06:11,813 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-10-28 09:06:11,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 415 events. 26/415 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 983 event pairs, 0 based on Foata normal form. 3/388 useless extension candidates. Maximal degree in co-relation 555. Up to 76 conditions per place. [2021-10-28 09:06:11,817 INFO L132 encePairwiseOnDemand]: 272/278 looper letters, 45 selfloop transitions, 3 changer transitions 6/250 dead transitions. [2021-10-28 09:06:11,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 250 transitions, 663 flow [2021-10-28 09:06:11,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:06:11,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-28 09:06:11,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1288 transitions. [2021-10-28 09:06:11,822 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7721822541966427 [2021-10-28 09:06:11,823 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1288 transitions. [2021-10-28 09:06:11,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1288 transitions. [2021-10-28 09:06:11,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:06:11,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1288 transitions. [2021-10-28 09:06:11,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 214.66666666666666) internal successors, (1288), 6 states have internal predecessors, (1288), 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) [2021-10-28 09:06:11,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 278.0) internal successors, (1946), 7 states have internal predecessors, (1946), 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) [2021-10-28 09:06:11,836 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 278.0) internal successors, (1946), 7 states have internal predecessors, (1946), 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) [2021-10-28 09:06:11,836 INFO L186 Difference]: Start difference. First operand has 242 places, 245 transitions, 539 flow. Second operand 6 states and 1288 transitions. [2021-10-28 09:06:11,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 250 transitions, 663 flow [2021-10-28 09:06:11,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 250 transitions, 655 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-10-28 09:06:11,845 INFO L242 Difference]: Finished difference. Result has 246 places, 244 transitions, 541 flow [2021-10-28 09:06:11,846 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=541, PETRI_PLACES=246, PETRI_TRANSITIONS=244} [2021-10-28 09:06:11,846 INFO L334 CegarLoopForPetriNet]: 245 programPoint places, 1 predicate places. [2021-10-28 09:06:11,846 INFO L470 AbstractCegarLoop]: Abstraction has has 246 places, 244 transitions, 541 flow [2021-10-28 09:06:11,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 213.33333333333334) internal successors, (1280), 6 states have internal predecessors, (1280), 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) [2021-10-28 09:06:11,847 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:06:11,848 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:11,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:06:11,848 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:06:11,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:11,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1683672883, now seen corresponding path program 1 times [2021-10-28 09:06:11,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:11,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145686700] [2021-10-28 09:06:11,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:11,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:12,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:12,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:12,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145686700] [2021-10-28 09:06:12,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145686700] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:12,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:12,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:06:12,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439107914] [2021-10-28 09:06:12,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:06:12,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:12,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:06:12,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:06:12,059 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 278 [2021-10-28 09:06:12,061 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 244 transitions, 541 flow. Second operand has 8 states, 8 states have (on average 208.875) internal successors, (1671), 8 states have internal predecessors, (1671), 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) [2021-10-28 09:06:12,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:06:12,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 278 [2021-10-28 09:06:12,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:06:12,382 INFO L129 PetriNetUnfolder]: 71/706 cut-off events. [2021-10-28 09:06:12,382 INFO L130 PetriNetUnfolder]: For 19/70 co-relation queries the response was YES. [2021-10-28 09:06:12,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 945 conditions, 706 events. 71/706 cut-off events. For 19/70 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2887 event pairs, 12 based on Foata normal form. 2/632 useless extension candidates. Maximal degree in co-relation 934. Up to 70 conditions per place. [2021-10-28 09:06:12,391 INFO L132 encePairwiseOnDemand]: 264/278 looper letters, 86 selfloop transitions, 14 changer transitions 2/285 dead transitions. [2021-10-28 09:06:12,391 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 285 transitions, 839 flow [2021-10-28 09:06:12,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:06:12,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 09:06:12,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2344 transitions. [2021-10-28 09:06:12,400 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7665140614780902 [2021-10-28 09:06:12,401 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2344 transitions. [2021-10-28 09:06:12,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2344 transitions. [2021-10-28 09:06:12,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:06:12,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2344 transitions. [2021-10-28 09:06:12,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 213.0909090909091) internal successors, (2344), 11 states have internal predecessors, (2344), 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) [2021-10-28 09:06:12,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 278.0) internal successors, (3336), 12 states have internal predecessors, (3336), 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) [2021-10-28 09:06:12,449 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 278.0) internal successors, (3336), 12 states have internal predecessors, (3336), 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) [2021-10-28 09:06:12,449 INFO L186 Difference]: Start difference. First operand has 246 places, 244 transitions, 541 flow. Second operand 11 states and 2344 transitions. [2021-10-28 09:06:12,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 285 transitions, 839 flow [2021-10-28 09:06:12,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 285 transitions, 825 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-10-28 09:06:12,457 INFO L242 Difference]: Finished difference. Result has 251 places, 248 transitions, 581 flow [2021-10-28 09:06:12,458 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=581, PETRI_PLACES=251, PETRI_TRANSITIONS=248} [2021-10-28 09:06:12,458 INFO L334 CegarLoopForPetriNet]: 245 programPoint places, 6 predicate places. [2021-10-28 09:06:12,458 INFO L470 AbstractCegarLoop]: Abstraction has has 251 places, 248 transitions, 581 flow [2021-10-28 09:06:12,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 208.875) internal successors, (1671), 8 states have internal predecessors, (1671), 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) [2021-10-28 09:06:12,460 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:06:12,460 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:12,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:06:12,460 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:06:12,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:12,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1462558969, now seen corresponding path program 1 times [2021-10-28 09:06:12,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:12,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567027020] [2021-10-28 09:06:12,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:12,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:12,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:12,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:12,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567027020] [2021-10-28 09:06:12,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567027020] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:12,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:12,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:06:12,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415314863] [2021-10-28 09:06:12,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:06:12,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:12,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:06:12,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:06:12,601 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 278 [2021-10-28 09:06:12,603 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 248 transitions, 581 flow. Second operand has 7 states, 7 states have (on average 215.28571428571428) internal successors, (1507), 7 states have internal predecessors, (1507), 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) [2021-10-28 09:06:12,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:06:12,604 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 278 [2021-10-28 09:06:12,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:06:12,986 INFO L129 PetriNetUnfolder]: 139/1296 cut-off events. [2021-10-28 09:06:12,987 INFO L130 PetriNetUnfolder]: For 82/85 co-relation queries the response was YES. [2021-10-28 09:06:12,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1769 conditions, 1296 events. 139/1296 cut-off events. For 82/85 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6893 event pairs, 30 based on Foata normal form. 0/1203 useless extension candidates. Maximal degree in co-relation 1758. Up to 118 conditions per place. [2021-10-28 09:06:13,000 INFO L132 encePairwiseOnDemand]: 266/278 looper letters, 96 selfloop transitions, 14 changer transitions 3/303 dead transitions. [2021-10-28 09:06:13,000 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 303 transitions, 957 flow [2021-10-28 09:06:13,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:06:13,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:06:13,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2203 transitions. [2021-10-28 09:06:13,008 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7924460431654676 [2021-10-28 09:06:13,008 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2203 transitions. [2021-10-28 09:06:13,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2203 transitions. [2021-10-28 09:06:13,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:06:13,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2203 transitions. [2021-10-28 09:06:13,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 220.3) internal successors, (2203), 10 states have internal predecessors, (2203), 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) [2021-10-28 09:06:13,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 278.0) internal successors, (3058), 11 states have internal predecessors, (3058), 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) [2021-10-28 09:06:13,026 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 278.0) internal successors, (3058), 11 states have internal predecessors, (3058), 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) [2021-10-28 09:06:13,026 INFO L186 Difference]: Start difference. First operand has 251 places, 248 transitions, 581 flow. Second operand 10 states and 2203 transitions. [2021-10-28 09:06:13,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 303 transitions, 957 flow [2021-10-28 09:06:13,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 303 transitions, 944 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-10-28 09:06:13,038 INFO L242 Difference]: Finished difference. Result has 258 places, 253 transitions, 633 flow [2021-10-28 09:06:13,039 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=633, PETRI_PLACES=258, PETRI_TRANSITIONS=253} [2021-10-28 09:06:13,043 INFO L334 CegarLoopForPetriNet]: 245 programPoint places, 13 predicate places. [2021-10-28 09:06:13,043 INFO L470 AbstractCegarLoop]: Abstraction has has 258 places, 253 transitions, 633 flow [2021-10-28 09:06:13,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 215.28571428571428) internal successors, (1507), 7 states have internal predecessors, (1507), 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) [2021-10-28 09:06:13,045 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:06:13,045 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:13,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:06:13,046 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:06:13,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:13,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1444755681, now seen corresponding path program 1 times [2021-10-28 09:06:13,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:13,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927791754] [2021-10-28 09:06:13,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:13,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:13,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:13,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:13,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927791754] [2021-10-28 09:06:13,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927791754] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:06:13,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663886424] [2021-10-28 09:06:13,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:13,253 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:06:13,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:06:13,258 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:06:13,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:06:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:13,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:06:13,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:06:14,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:14,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663886424] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:06:14,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:06:14,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-10-28 09:06:14,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250324584] [2021-10-28 09:06:14,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:06:14,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:14,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:06:14,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:06:14,417 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 278 [2021-10-28 09:06:14,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 253 transitions, 633 flow. Second operand has 14 states, 14 states have (on average 209.35714285714286) internal successors, (2931), 14 states have internal predecessors, (2931), 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) [2021-10-28 09:06:14,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:06:14,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 278 [2021-10-28 09:06:14,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:06:15,320 INFO L129 PetriNetUnfolder]: 361/3038 cut-off events. [2021-10-28 09:06:15,320 INFO L130 PetriNetUnfolder]: For 208/208 co-relation queries the response was YES. [2021-10-28 09:06:15,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4129 conditions, 3038 events. 361/3038 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 24059 event pairs, 82 based on Foata normal form. 0/2800 useless extension candidates. Maximal degree in co-relation 4116. Up to 210 conditions per place. [2021-10-28 09:06:15,402 INFO L132 encePairwiseOnDemand]: 261/278 looper letters, 105 selfloop transitions, 25 changer transitions 0/317 dead transitions. [2021-10-28 09:06:15,402 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 317 transitions, 1029 flow [2021-10-28 09:06:15,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:06:15,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-28 09:06:15,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3596 transitions. [2021-10-28 09:06:15,414 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7608971646212441 [2021-10-28 09:06:15,414 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3596 transitions. [2021-10-28 09:06:15,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3596 transitions. [2021-10-28 09:06:15,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:06:15,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3596 transitions. [2021-10-28 09:06:15,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 211.52941176470588) internal successors, (3596), 17 states have internal predecessors, (3596), 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) [2021-10-28 09:06:15,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 278.0) internal successors, (5004), 18 states have internal predecessors, (5004), 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) [2021-10-28 09:06:15,443 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 278.0) internal successors, (5004), 18 states have internal predecessors, (5004), 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) [2021-10-28 09:06:15,443 INFO L186 Difference]: Start difference. First operand has 258 places, 253 transitions, 633 flow. Second operand 17 states and 3596 transitions. [2021-10-28 09:06:15,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 317 transitions, 1029 flow [2021-10-28 09:06:15,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 317 transitions, 1021 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 09:06:15,464 INFO L242 Difference]: Finished difference. Result has 279 places, 267 transitions, 760 flow [2021-10-28 09:06:15,466 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=760, PETRI_PLACES=279, PETRI_TRANSITIONS=267} [2021-10-28 09:06:15,467 INFO L334 CegarLoopForPetriNet]: 245 programPoint places, 34 predicate places. [2021-10-28 09:06:15,467 INFO L470 AbstractCegarLoop]: Abstraction has has 279 places, 267 transitions, 760 flow [2021-10-28 09:06:15,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 209.35714285714286) internal successors, (2931), 14 states have internal predecessors, (2931), 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) [2021-10-28 09:06:15,477 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:06:15,477 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:15,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-28 09:06:15,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-28 09:06:15,705 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:06:15,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:15,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1238882953, now seen corresponding path program 1 times [2021-10-28 09:06:15,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:15,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006166759] [2021-10-28 09:06:15,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:15,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:15,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:06:15,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:15,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006166759] [2021-10-28 09:06:15,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006166759] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:06:15,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632116811] [2021-10-28 09:06:15,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:15,874 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:06:15,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:06:15,877 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:06:15,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:06:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:16,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:06:16,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:06:17,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:06:17,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632116811] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:06:17,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:06:17,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-10-28 09:06:17,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145774190] [2021-10-28 09:06:17,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:06:17,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:17,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:06:17,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:06:17,078 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 278 [2021-10-28 09:06:17,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 267 transitions, 760 flow. Second operand has 14 states, 14 states have (on average 209.42857142857142) internal successors, (2932), 14 states have internal predecessors, (2932), 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) [2021-10-28 09:06:17,083 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:06:17,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 278 [2021-10-28 09:06:17,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:06:18,123 INFO L129 PetriNetUnfolder]: 267/3038 cut-off events. [2021-10-28 09:06:18,123 INFO L130 PetriNetUnfolder]: For 439/449 co-relation queries the response was YES. [2021-10-28 09:06:18,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4315 conditions, 3038 events. 267/3038 cut-off events. For 439/449 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 25535 event pairs, 66 based on Foata normal form. 10/2800 useless extension candidates. Maximal degree in co-relation 4295. Up to 215 conditions per place. [2021-10-28 09:06:18,161 INFO L132 encePairwiseOnDemand]: 257/278 looper letters, 120 selfloop transitions, 32 changer transitions 11/353 dead transitions. [2021-10-28 09:06:18,161 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 353 transitions, 1364 flow [2021-10-28 09:06:18,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:06:18,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-28 09:06:18,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3615 transitions. [2021-10-28 09:06:18,174 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649174777824799 [2021-10-28 09:06:18,174 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3615 transitions. [2021-10-28 09:06:18,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3615 transitions. [2021-10-28 09:06:18,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:06:18,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3615 transitions. [2021-10-28 09:06:18,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 212.64705882352942) internal successors, (3615), 17 states have internal predecessors, (3615), 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) [2021-10-28 09:06:18,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 278.0) internal successors, (5004), 18 states have internal predecessors, (5004), 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) [2021-10-28 09:06:18,202 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 278.0) internal successors, (5004), 18 states have internal predecessors, (5004), 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) [2021-10-28 09:06:18,202 INFO L186 Difference]: Start difference. First operand has 279 places, 267 transitions, 760 flow. Second operand 17 states and 3615 transitions. [2021-10-28 09:06:18,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 353 transitions, 1364 flow [2021-10-28 09:06:18,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 353 transitions, 1338 flow, removed 1 selfloop flow, removed 5 redundant places. [2021-10-28 09:06:18,217 INFO L242 Difference]: Finished difference. Result has 296 places, 279 transitions, 934 flow [2021-10-28 09:06:18,218 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=934, PETRI_PLACES=296, PETRI_TRANSITIONS=279} [2021-10-28 09:06:18,218 INFO L334 CegarLoopForPetriNet]: 245 programPoint places, 51 predicate places. [2021-10-28 09:06:18,218 INFO L470 AbstractCegarLoop]: Abstraction has has 296 places, 279 transitions, 934 flow [2021-10-28 09:06:18,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 209.42857142857142) internal successors, (2932), 14 states have internal predecessors, (2932), 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) [2021-10-28 09:06:18,219 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:06:18,220 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:18,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:06:18,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:06:18,433 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:06:18,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:18,434 INFO L85 PathProgramCache]: Analyzing trace with hash -739461984, now seen corresponding path program 1 times [2021-10-28 09:06:18,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:18,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347648467] [2021-10-28 09:06:18,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:18,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:18,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:06:18,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:18,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347648467] [2021-10-28 09:06:18,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347648467] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:18,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:18,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-28 09:06:18,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453548096] [2021-10-28 09:06:18,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:06:18,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:18,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:06:18,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:06:18,766 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 278 [2021-10-28 09:06:18,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 279 transitions, 934 flow. Second operand has 13 states, 13 states have (on average 174.6153846153846) internal successors, (2270), 13 states have internal predecessors, (2270), 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) [2021-10-28 09:06:18,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:06:18,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 278 [2021-10-28 09:06:18,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:06:20,664 INFO L129 PetriNetUnfolder]: 1480/6475 cut-off events. [2021-10-28 09:06:20,665 INFO L130 PetriNetUnfolder]: For 2219/2243 co-relation queries the response was YES. [2021-10-28 09:06:20,735 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10910 conditions, 6475 events. 1480/6475 cut-off events. For 2219/2243 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 64740 event pairs, 676 based on Foata normal form. 11/5880 useless extension candidates. Maximal degree in co-relation 10883. Up to 1190 conditions per place. [2021-10-28 09:06:20,771 INFO L132 encePairwiseOnDemand]: 252/278 looper letters, 118 selfloop transitions, 26 changer transitions 12/326 dead transitions. [2021-10-28 09:06:20,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 326 transitions, 1391 flow [2021-10-28 09:06:20,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 09:06:20,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-28 09:06:20,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3342 transitions. [2021-10-28 09:06:20,784 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6327148807269973 [2021-10-28 09:06:20,784 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3342 transitions. [2021-10-28 09:06:20,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3342 transitions. [2021-10-28 09:06:20,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:06:20,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3342 transitions. [2021-10-28 09:06:20,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 175.89473684210526) internal successors, (3342), 19 states have internal predecessors, (3342), 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) [2021-10-28 09:06:20,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 278.0) internal successors, (5560), 20 states have internal predecessors, (5560), 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) [2021-10-28 09:06:20,811 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 278.0) internal successors, (5560), 20 states have internal predecessors, (5560), 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) [2021-10-28 09:06:20,811 INFO L186 Difference]: Start difference. First operand has 296 places, 279 transitions, 934 flow. Second operand 19 states and 3342 transitions. [2021-10-28 09:06:20,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 326 transitions, 1391 flow [2021-10-28 09:06:20,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 326 transitions, 1342 flow, removed 10 selfloop flow, removed 11 redundant places. [2021-10-28 09:06:20,831 INFO L242 Difference]: Finished difference. Result has 307 places, 278 transitions, 961 flow [2021-10-28 09:06:20,831 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=961, PETRI_PLACES=307, PETRI_TRANSITIONS=278} [2021-10-28 09:06:20,832 INFO L334 CegarLoopForPetriNet]: 245 programPoint places, 62 predicate places. [2021-10-28 09:06:20,832 INFO L470 AbstractCegarLoop]: Abstraction has has 307 places, 278 transitions, 961 flow [2021-10-28 09:06:20,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 174.6153846153846) internal successors, (2270), 13 states have internal predecessors, (2270), 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) [2021-10-28 09:06:20,833 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:06:20,833 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:20,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 09:06:20,834 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:06:20,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:20,835 INFO L85 PathProgramCache]: Analyzing trace with hash -214881758, now seen corresponding path program 1 times [2021-10-28 09:06:20,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:20,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291601327] [2021-10-28 09:06:20,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:20,836 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:21,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:06:21,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:21,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291601327] [2021-10-28 09:06:21,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291601327] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:21,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:21,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:06:21,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951772537] [2021-10-28 09:06:21,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:06:21,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:21,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:06:21,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:06:21,016 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 278 [2021-10-28 09:06:21,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 278 transitions, 961 flow. Second operand has 7 states, 7 states have (on average 215.71428571428572) internal successors, (1510), 7 states have internal predecessors, (1510), 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) [2021-10-28 09:06:21,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:06:21,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 278 [2021-10-28 09:06:21,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:06:21,611 INFO L129 PetriNetUnfolder]: 185/2026 cut-off events. [2021-10-28 09:06:21,612 INFO L130 PetriNetUnfolder]: For 772/782 co-relation queries the response was YES. [2021-10-28 09:06:21,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3046 conditions, 2026 events. 185/2026 cut-off events. For 772/782 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14541 event pairs, 82 based on Foata normal form. 4/1850 useless extension candidates. Maximal degree in co-relation 3014. Up to 172 conditions per place. [2021-10-28 09:06:21,635 INFO L132 encePairwiseOnDemand]: 266/278 looper letters, 66 selfloop transitions, 13 changer transitions 31/312 dead transitions. [2021-10-28 09:06:21,635 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 312 transitions, 1282 flow [2021-10-28 09:06:21,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:06:21,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:06:21,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2197 transitions. [2021-10-28 09:06:21,645 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7902877697841727 [2021-10-28 09:06:21,645 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2197 transitions. [2021-10-28 09:06:21,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2197 transitions. [2021-10-28 09:06:21,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:06:21,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2197 transitions. [2021-10-28 09:06:21,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 219.7) internal successors, (2197), 10 states have internal predecessors, (2197), 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) [2021-10-28 09:06:21,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 278.0) internal successors, (3058), 11 states have internal predecessors, (3058), 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) [2021-10-28 09:06:21,661 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 278.0) internal successors, (3058), 11 states have internal predecessors, (3058), 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) [2021-10-28 09:06:21,661 INFO L186 Difference]: Start difference. First operand has 307 places, 278 transitions, 961 flow. Second operand 10 states and 2197 transitions. [2021-10-28 09:06:21,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 312 transitions, 1282 flow [2021-10-28 09:06:21,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 312 transitions, 1219 flow, removed 8 selfloop flow, removed 17 redundant places. [2021-10-28 09:06:21,675 INFO L242 Difference]: Finished difference. Result has 295 places, 269 transitions, 869 flow [2021-10-28 09:06:21,676 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=869, PETRI_PLACES=295, PETRI_TRANSITIONS=269} [2021-10-28 09:06:21,676 INFO L334 CegarLoopForPetriNet]: 245 programPoint places, 50 predicate places. [2021-10-28 09:06:21,677 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 269 transitions, 869 flow [2021-10-28 09:06:21,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 215.71428571428572) internal successors, (1510), 7 states have internal predecessors, (1510), 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) [2021-10-28 09:06:21,677 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:06:21,678 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:21,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 09:06:21,678 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:06:21,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:21,678 INFO L85 PathProgramCache]: Analyzing trace with hash 2045572376, now seen corresponding path program 1 times [2021-10-28 09:06:21,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:21,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605874854] [2021-10-28 09:06:21,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:21,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:21,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 09:06:21,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:21,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605874854] [2021-10-28 09:06:21,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605874854] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:21,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:21,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:06:21,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678299182] [2021-10-28 09:06:21,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:06:21,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:21,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:06:21,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:06:21,809 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 278 [2021-10-28 09:06:21,810 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 269 transitions, 869 flow. Second operand has 6 states, 6 states have (on average 199.83333333333334) internal successors, (1199), 6 states have internal predecessors, (1199), 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) [2021-10-28 09:06:21,811 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:06:21,811 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 278 [2021-10-28 09:06:21,811 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:06:21,841 INFO L129 PetriNetUnfolder]: 0/46 cut-off events. [2021-10-28 09:06:21,841 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-10-28 09:06:21,841 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 46 events. 0/46 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/47 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-10-28 09:06:21,841 INFO L132 encePairwiseOnDemand]: 273/278 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2021-10-28 09:06:21,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 46 transitions, 163 flow [2021-10-28 09:06:21,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:06:21,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-28 09:06:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1153 transitions. [2021-10-28 09:06:21,850 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6912470023980816 [2021-10-28 09:06:21,851 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1153 transitions. [2021-10-28 09:06:21,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1153 transitions. [2021-10-28 09:06:21,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:06:21,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1153 transitions. [2021-10-28 09:06:21,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 192.16666666666666) internal successors, (1153), 6 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:06:21,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 278.0) internal successors, (1946), 7 states have internal predecessors, (1946), 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) [2021-10-28 09:06:21,863 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 278.0) internal successors, (1946), 7 states have internal predecessors, (1946), 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) [2021-10-28 09:06:21,864 INFO L186 Difference]: Start difference. First operand has 295 places, 269 transitions, 869 flow. Second operand 6 states and 1153 transitions. [2021-10-28 09:06:21,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 46 transitions, 163 flow [2021-10-28 09:06:21,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 46 transitions, 122 flow, removed 0 selfloop flow, removed 20 redundant places. [2021-10-28 09:06:21,865 INFO L242 Difference]: Finished difference. Result has 72 places, 0 transitions, 0 flow [2021-10-28 09:06:21,866 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=72, PETRI_TRANSITIONS=0} [2021-10-28 09:06:21,866 INFO L334 CegarLoopForPetriNet]: 245 programPoint places, -173 predicate places. [2021-10-28 09:06:21,866 INFO L470 AbstractCegarLoop]: Abstraction has has 72 places, 0 transitions, 0 flow [2021-10-28 09:06:21,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 199.83333333333334) internal successors, (1199), 6 states have internal predecessors, (1199), 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) [2021-10-28 09:06:21,869 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:06:21,870 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 09:06:21,870 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 09:06:21,870 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 09:06:21,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 09:06:21,879 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:21,884 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 09:06:21,884 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:06:21,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:06:21 BasicIcfg [2021-10-28 09:06:21,894 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:06:21,894 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:06:21,894 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:06:21,895 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:06:21,895 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:06:09" (3/4) ... [2021-10-28 09:06:21,899 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:06:21,908 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-28 09:06:21,909 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-28 09:06:21,909 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-28 09:06:21,920 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2021-10-28 09:06:21,921 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:06:21,921 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:06:21,922 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:06:21,998 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:06:21,999 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:06:22,000 INFO L168 Benchmark]: Toolchain (without parser) took 14165.03 ms. Allocated memory was 140.5 MB in the beginning and 484.4 MB in the end (delta: 343.9 MB). Free memory was 108.3 MB in the beginning and 264.6 MB in the end (delta: -156.3 MB). Peak memory consumption was 188.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:22,001 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 100.7 MB. Free memory is still 57.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:06:22,002 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.69 ms. Allocated memory is still 140.5 MB. Free memory was 107.9 MB in the beginning and 113.2 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:22,002 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.57 ms. Allocated memory is still 140.5 MB. Free memory was 113.2 MB in the beginning and 111.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:22,003 INFO L168 Benchmark]: Boogie Preprocessor took 39.53 ms. Allocated memory is still 140.5 MB. Free memory was 111.1 MB in the beginning and 109.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:22,003 INFO L168 Benchmark]: RCFGBuilder took 776.92 ms. Allocated memory is still 140.5 MB. Free memory was 109.0 MB in the beginning and 89.7 MB in the end (delta: 19.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:22,003 INFO L168 Benchmark]: TraceAbstraction took 12784.76 ms. Allocated memory was 140.5 MB in the beginning and 484.4 MB in the end (delta: 343.9 MB). Free memory was 89.2 MB in the beginning and 269.8 MB in the end (delta: -180.6 MB). Peak memory consumption was 163.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:22,004 INFO L168 Benchmark]: Witness Printer took 104.48 ms. Allocated memory is still 484.4 MB. Free memory was 269.8 MB in the beginning and 264.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:22,008 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 100.7 MB. Free memory is still 57.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 346.69 ms. Allocated memory is still 140.5 MB. Free memory was 107.9 MB in the beginning and 113.2 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.57 ms. Allocated memory is still 140.5 MB. Free memory was 113.2 MB in the beginning and 111.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.53 ms. Allocated memory is still 140.5 MB. Free memory was 111.1 MB in the beginning and 109.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 776.92 ms. Allocated memory is still 140.5 MB. Free memory was 109.0 MB in the beginning and 89.7 MB in the end (delta: 19.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12784.76 ms. Allocated memory was 140.5 MB in the beginning and 484.4 MB in the end (delta: 343.9 MB). Free memory was 89.2 MB in the beginning and 269.8 MB in the end (delta: -180.6 MB). Peak memory consumption was 163.8 MB. Max. memory is 16.1 GB. * Witness Printer took 104.48 ms. Allocated memory is still 484.4 MB. Free memory was 269.8 MB in the beginning and 264.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 102]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 294 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.5s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 392 SDtfs, 1177 SDslu, 1105 SDs, 0 SdLazy, 1633 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 490 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=961occurred in iteration=9, InterpolantAutomatonStates: 110, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 2250 NumberOfCodeBlocks, 2250 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2237 ConstructedInterpolants, 0 QuantifiedInterpolants, 8816 SizeOfPredicates, 10 NumberOfNonLiveVariables, 759 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 9/13 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 09:06:22,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41718f63-3aa5-4637-8f2e-e0939dbb41d6/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...