./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY --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 7a36db720b6d804108933c3ba293952a1c1a37d338c9066556361dd54abcc655 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:45:46,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:45:46,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:45:46,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:45:46,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:45:46,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:45:46,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:45:46,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:45:46,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:45:46,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:45:46,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:45:46,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:45:46,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:45:46,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:45:46,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:45:46,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:45:46,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:45:46,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:45:46,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:45:46,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:45:46,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:45:46,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:45:46,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:45:46,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:45:46,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:45:46,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:45:46,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:45:46,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:45:46,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:45:46,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:45:46,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:45:46,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:45:46,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:45:46,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:45:46,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:45:46,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:45:46,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:45:46,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:45:46,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:45:46,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:45:46,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:45:46,396 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 07:45:46,424 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:45:46,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:45:46,425 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:45:46,425 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:45:46,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:45:46,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:45:46,426 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:45:46,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:45:46,427 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:45:46,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:45:46,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:45:46,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:45:46,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:45:46,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:45:46,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:45:46,428 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:45:46,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:45:46,428 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:45:46,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:45:46,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:45:46,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:45:46,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:45:46,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:45:46,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:45:46,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:45:46,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:45:46,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:45:46,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:45:46,431 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 07:45:46,431 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 07:45:46,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:45:46,431 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:45:46,431 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_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a36db720b6d804108933c3ba293952a1c1a37d338c9066556361dd54abcc655 [2021-11-07 07:45:46,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:45:46,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:45:46,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:45:46,725 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:45:46,726 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:45:46,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2021-11-07 07:45:46,815 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/data/79c1f35c6/288368862c7f4f2aaf536b9960aa2ee4/FLAGe74af492c [2021-11-07 07:45:47,379 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:45:47,380 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2021-11-07 07:45:47,390 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/data/79c1f35c6/288368862c7f4f2aaf536b9960aa2ee4/FLAGe74af492c [2021-11-07 07:45:47,726 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/data/79c1f35c6/288368862c7f4f2aaf536b9960aa2ee4 [2021-11-07 07:45:47,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:45:47,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:45:47,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:45:47,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:45:47,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:45:47,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:45:47" (1/1) ... [2021-11-07 07:45:47,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a2dfad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:47, skipping insertion in model container [2021-11-07 07:45:47,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:45:47" (1/1) ... [2021-11-07 07:45:47,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:45:47,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:45:48,055 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_7d93c170-8fe1-4207-b4be-e34c7e33db7b/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2810,2823] [2021-11-07 07:45:48,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:45:48,093 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:45:48,129 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_7d93c170-8fe1-4207-b4be-e34c7e33db7b/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2810,2823] [2021-11-07 07:45:48,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:45:48,149 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:45:48,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:48 WrapperNode [2021-11-07 07:45:48,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:45:48,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:45:48,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:45:48,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:45:48,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:48" (1/1) ... [2021-11-07 07:45:48,168 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:48" (1/1) ... [2021-11-07 07:45:48,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:45:48,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:45:48,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:45:48,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:45:48,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:48" (1/1) ... [2021-11-07 07:45:48,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:48" (1/1) ... [2021-11-07 07:45:48,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:48" (1/1) ... [2021-11-07 07:45:48,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:48" (1/1) ... [2021-11-07 07:45:48,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:48" (1/1) ... [2021-11-07 07:45:48,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:48" (1/1) ... [2021-11-07 07:45:48,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:48" (1/1) ... [2021-11-07 07:45:48,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:45:48,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:45:48,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:45:48,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:45:48,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:48" (1/1) ... [2021-11-07 07:45:48,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:45:48,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:45:48,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:45:48,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:45:48,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:45:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 07:45:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 07:45:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-07 07:45:48,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-07 07:45:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-07 07:45:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-07 07:45:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-07 07:45:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-07 07:45:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 07:45:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-07 07:45:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-07 07:45:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 07:45:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:45:48,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:45:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 07:45:48,358 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-07 07:45:49,135 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:45:49,135 INFO L299 CfgBuilder]: Removed 44 assume(true) statements. [2021-11-07 07:45:49,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:45:49 BoogieIcfgContainer [2021-11-07 07:45:49,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:45:49,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:45:49,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:45:49,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:45:49,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:45:47" (1/3) ... [2021-11-07 07:45:49,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519433f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:45:49, skipping insertion in model container [2021-11-07 07:45:49,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:48" (2/3) ... [2021-11-07 07:45:49,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519433f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:45:49, skipping insertion in model container [2021-11-07 07:45:49,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:45:49" (3/3) ... [2021-11-07 07:45:49,148 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2021-11-07 07:45:49,153 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 07:45:49,154 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:45:49,154 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 07:45:49,154 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 07:45:49,218 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,218 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,219 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,234 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,234 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,235 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,235 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,235 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,235 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,236 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,236 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,236 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,236 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,237 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,237 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,237 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,237 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,238 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,238 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,238 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,238 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,239 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,239 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,239 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,239 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,240 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,240 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,240 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,240 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,241 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,241 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,241 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,241 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,242 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,242 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,242 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,242 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,243 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,243 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,243 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,243 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,243 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,244 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,244 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,244 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,244 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,245 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,245 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,245 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,245 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,246 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,246 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,246 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,246 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,246 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,247 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,247 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,247 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,247 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,248 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,248 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,248 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,249 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,249 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,249 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,249 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,250 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,250 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,250 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,250 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,251 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,251 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,251 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,251 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,251 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,252 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,252 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,252 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,252 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,252 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,253 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,253 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,253 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,253 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,254 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,254 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,254 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,254 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,254 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,255 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,255 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,255 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,259 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,260 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,260 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,260 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,260 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,261 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,261 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,261 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,261 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,261 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,262 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,262 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,263 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,263 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,263 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,263 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,264 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,264 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,264 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,264 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,265 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,265 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,265 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,265 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,266 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,266 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,266 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,266 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,267 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,267 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,267 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,267 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,268 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,268 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,268 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,268 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,269 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,269 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,269 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,269 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,270 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,270 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,270 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,270 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,270 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,271 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,274 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,274 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,275 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,275 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,275 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,275 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,275 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,276 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,277 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,277 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,277 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,280 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,282 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,282 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,283 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,283 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,283 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,283 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,285 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,286 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,286 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,286 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,286 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,287 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,287 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,287 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:45:49,295 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-07 07:45:49,370 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:45:49,388 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 [2021-11-07 07:45:49,389 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 07:45:49,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 241 places, 256 transitions, 536 flow [2021-11-07 07:45:49,545 INFO L129 PetriNetUnfolder]: 25/253 cut-off events. [2021-11-07 07:45:49,546 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-07 07:45:49,553 INFO L84 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 253 events. 25/253 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 198 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 215. Up to 3 conditions per place. [2021-11-07 07:45:49,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 256 transitions, 536 flow [2021-11-07 07:45:49,567 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 243 transitions, 504 flow [2021-11-07 07:45:49,651 INFO L129 PetriNetUnfolder]: 25/242 cut-off events. [2021-11-07 07:45:49,652 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-07 07:45:49,653 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:45:49,654 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] [2021-11-07 07:45:49,654 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 07:45:49,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:45:49,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1665892092, now seen corresponding path program 1 times [2021-11-07 07:45:49,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:45:49,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478228459] [2021-11-07 07:45:49,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:45:49,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:45:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:45:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:45:50,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:45:50,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478228459] [2021-11-07 07:45:50,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478228459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:45:50,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:45:50,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:45:50,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918002683] [2021-11-07 07:45:50,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 07:45:50,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:45:50,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 07:45:50,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 07:45:50,126 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 256 [2021-11-07 07:45:50,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 243 transitions, 504 flow. Second operand has 2 states, 2 states have (on average 241.0) internal successors, (482), 2 states have internal predecessors, (482), 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) [2021-11-07 07:45:50,136 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:45:50,136 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 256 [2021-11-07 07:45:50,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:45:50,224 INFO L129 PetriNetUnfolder]: 9/227 cut-off events. [2021-11-07 07:45:50,224 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-07 07:45:50,227 INFO L84 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 227 events. 9/227 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 181 event pairs, 0 based on Foata normal form. 16/224 useless extension candidates. Maximal degree in co-relation 236. Up to 3 conditions per place. [2021-11-07 07:45:50,231 INFO L132 encePairwiseOnDemand]: 240/256 looper letters, 0 selfloop transitions, 0 changer transitions 10/227 dead transitions. [2021-11-07 07:45:50,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 227 transitions, 472 flow [2021-11-07 07:45:50,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 07:45:50,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-11-07 07:45:50,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 494 transitions. [2021-11-07 07:45:50,261 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.96484375 [2021-11-07 07:45:50,262 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 494 transitions. [2021-11-07 07:45:50,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 494 transitions. [2021-11-07 07:45:50,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:45:50,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 494 transitions. [2021-11-07 07:45:50,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 247.0) internal successors, (494), 2 states have internal predecessors, (494), 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) [2021-11-07 07:45:50,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:45:50,291 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:45:50,293 INFO L186 Difference]: Start difference. First operand has 228 places, 243 transitions, 504 flow. Second operand 2 states and 494 transitions. [2021-11-07 07:45:50,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 227 transitions, 472 flow [2021-11-07 07:45:50,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 227 transitions, 460 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-11-07 07:45:50,317 INFO L242 Difference]: Finished difference. Result has 223 places, 217 transitions, 440 flow [2021-11-07 07:45:50,320 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=440, PETRI_PLACES=223, PETRI_TRANSITIONS=217} [2021-11-07 07:45:50,321 INFO L334 CegarLoopForPetriNet]: 228 programPoint places, -5 predicate places. [2021-11-07 07:45:50,322 INFO L470 AbstractCegarLoop]: Abstraction has has 223 places, 217 transitions, 440 flow [2021-11-07 07:45:50,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 241.0) internal successors, (482), 2 states have internal predecessors, (482), 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) [2021-11-07 07:45:50,323 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:45:50,323 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] [2021-11-07 07:45:50,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 07:45:50,324 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 07:45:50,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:45:50,325 INFO L85 PathProgramCache]: Analyzing trace with hash -994375070, now seen corresponding path program 1 times [2021-11-07 07:45:50,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:45:50,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154977474] [2021-11-07 07:45:50,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:45:50,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:45:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:45:50,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:45:50,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:45:50,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154977474] [2021-11-07 07:45:50,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154977474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:45:50,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:45:50,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 07:45:50,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900902144] [2021-11-07 07:45:50,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:45:50,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:45:50,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:45:50,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:45:50,843 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 256 [2021-11-07 07:45:50,845 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 217 transitions, 440 flow. Second operand has 8 states, 8 states have (on average 158.875) internal successors, (1271), 8 states have internal predecessors, (1271), 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) [2021-11-07 07:45:50,845 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:45:50,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 256 [2021-11-07 07:45:50,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:45:51,220 INFO L129 PetriNetUnfolder]: 73/449 cut-off events. [2021-11-07 07:45:51,221 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-07 07:45:51,225 INFO L84 FinitePrefix]: Finished finitePrefix Result has 621 conditions, 449 events. 73/449 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1443 event pairs, 28 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 618. Up to 144 conditions per place. [2021-11-07 07:45:51,229 INFO L132 encePairwiseOnDemand]: 238/256 looper letters, 75 selfloop transitions, 15 changer transitions 0/229 dead transitions. [2021-11-07 07:45:51,229 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 229 transitions, 644 flow [2021-11-07 07:45:51,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:45:51,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-07 07:45:51,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1301 transitions. [2021-11-07 07:45:51,237 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.63525390625 [2021-11-07 07:45:51,237 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1301 transitions. [2021-11-07 07:45:51,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1301 transitions. [2021-11-07 07:45:51,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:45:51,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1301 transitions. [2021-11-07 07:45:51,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 162.625) internal successors, (1301), 8 states have internal predecessors, (1301), 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) [2021-11-07 07:45:51,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 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) [2021-11-07 07:45:51,253 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 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) [2021-11-07 07:45:51,254 INFO L186 Difference]: Start difference. First operand has 223 places, 217 transitions, 440 flow. Second operand 8 states and 1301 transitions. [2021-11-07 07:45:51,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 229 transitions, 644 flow [2021-11-07 07:45:51,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 229 transitions, 644 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-07 07:45:51,271 INFO L242 Difference]: Finished difference. Result has 221 places, 220 transitions, 494 flow [2021-11-07 07:45:51,272 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=494, PETRI_PLACES=221, PETRI_TRANSITIONS=220} [2021-11-07 07:45:51,272 INFO L334 CegarLoopForPetriNet]: 228 programPoint places, -7 predicate places. [2021-11-07 07:45:51,273 INFO L470 AbstractCegarLoop]: Abstraction has has 221 places, 220 transitions, 494 flow [2021-11-07 07:45:51,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 158.875) internal successors, (1271), 8 states have internal predecessors, (1271), 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) [2021-11-07 07:45:51,274 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:45:51,275 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] [2021-11-07 07:45:51,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 07:45:51,276 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 07:45:51,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:45:51,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1168981850, now seen corresponding path program 1 times [2021-11-07 07:45:51,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:45:51,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002853730] [2021-11-07 07:45:51,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:45:51,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:45:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:45:51,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:45:51,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:45:51,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002853730] [2021-11-07 07:45:51,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002853730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:45:51,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:45:51,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 07:45:51,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88559827] [2021-11-07 07:45:51,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 07:45:51,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:45:51,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 07:45:51,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2021-11-07 07:45:51,793 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 256 [2021-11-07 07:45:51,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 220 transitions, 494 flow. Second operand has 16 states, 16 states have (on average 142.9375) internal successors, (2287), 16 states have internal predecessors, (2287), 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) [2021-11-07 07:45:51,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:45:51,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 256 [2021-11-07 07:45:51,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:45:52,920 INFO L129 PetriNetUnfolder]: 604/2041 cut-off events. [2021-11-07 07:45:52,920 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-07 07:45:52,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2875 conditions, 2041 events. 604/2041 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 14712 event pairs, 102 based on Foata normal form. 1/1773 useless extension candidates. Maximal degree in co-relation 2870. Up to 437 conditions per place. [2021-11-07 07:45:52,954 INFO L132 encePairwiseOnDemand]: 233/256 looper letters, 105 selfloop transitions, 22 changer transitions 3/259 dead transitions. [2021-11-07 07:45:52,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 259 transitions, 832 flow [2021-11-07 07:45:52,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 07:45:52,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-07 07:45:52,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3167 transitions. [2021-11-07 07:45:52,967 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5623224431818182 [2021-11-07 07:45:52,967 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3167 transitions. [2021-11-07 07:45:52,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3167 transitions. [2021-11-07 07:45:52,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:45:52,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3167 transitions. [2021-11-07 07:45:53,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 143.95454545454547) internal successors, (3167), 22 states have internal predecessors, (3167), 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) [2021-11-07 07:45:53,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 256.0) internal successors, (5888), 23 states have internal predecessors, (5888), 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) [2021-11-07 07:45:53,029 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 256.0) internal successors, (5888), 23 states have internal predecessors, (5888), 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) [2021-11-07 07:45:53,030 INFO L186 Difference]: Start difference. First operand has 221 places, 220 transitions, 494 flow. Second operand 22 states and 3167 transitions. [2021-11-07 07:45:53,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 259 transitions, 832 flow [2021-11-07 07:45:53,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 259 transitions, 808 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-11-07 07:45:53,039 INFO L242 Difference]: Finished difference. Result has 239 places, 225 transitions, 540 flow [2021-11-07 07:45:53,040 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=540, PETRI_PLACES=239, PETRI_TRANSITIONS=225} [2021-11-07 07:45:53,040 INFO L334 CegarLoopForPetriNet]: 228 programPoint places, 11 predicate places. [2021-11-07 07:45:53,041 INFO L470 AbstractCegarLoop]: Abstraction has has 239 places, 225 transitions, 540 flow [2021-11-07 07:45:53,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 142.9375) internal successors, (2287), 16 states have internal predecessors, (2287), 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) [2021-11-07 07:45:53,043 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:45:53,043 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, 1, 1] [2021-11-07 07:45:53,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 07:45:53,044 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 07:45:53,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:45:53,044 INFO L85 PathProgramCache]: Analyzing trace with hash -847760838, now seen corresponding path program 1 times [2021-11-07 07:45:53,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:45:53,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828198086] [2021-11-07 07:45:53,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:45:53,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:45:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:45:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 07:45:53,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:45:53,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828198086] [2021-11-07 07:45:53,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828198086] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:45:53,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547905039] [2021-11-07 07:45:53,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:45:53,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:45:53,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:45:53,383 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:45:53,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 07:45:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:45:53,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 07:45:53,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:45:54,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 07:45:54,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547905039] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:45:54,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:45:54,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-11-07 07:45:54,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840242072] [2021-11-07 07:45:54,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 07:45:54,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:45:54,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 07:45:54,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:45:54,381 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 256 [2021-11-07 07:45:54,387 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 225 transitions, 540 flow. Second operand has 13 states, 13 states have (on average 189.69230769230768) internal successors, (2466), 13 states have internal predecessors, (2466), 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) [2021-11-07 07:45:54,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:45:54,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 256 [2021-11-07 07:45:54,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:45:55,414 INFO L129 PetriNetUnfolder]: 825/2300 cut-off events. [2021-11-07 07:45:55,414 INFO L130 PetriNetUnfolder]: For 44/98 co-relation queries the response was YES. [2021-11-07 07:45:55,428 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3731 conditions, 2300 events. 825/2300 cut-off events. For 44/98 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 13164 event pairs, 304 based on Foata normal form. 0/1690 useless extension candidates. Maximal degree in co-relation 3723. Up to 701 conditions per place. [2021-11-07 07:45:55,448 INFO L132 encePairwiseOnDemand]: 229/256 looper letters, 108 selfloop transitions, 47 changer transitions 0/322 dead transitions. [2021-11-07 07:45:55,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 322 transitions, 1082 flow [2021-11-07 07:45:55,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 07:45:55,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-07 07:45:55,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3486 transitions. [2021-11-07 07:45:55,462 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7565104166666666 [2021-11-07 07:45:55,462 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3486 transitions. [2021-11-07 07:45:55,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3486 transitions. [2021-11-07 07:45:55,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:45:55,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3486 transitions. [2021-11-07 07:45:55,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 193.66666666666666) internal successors, (3486), 18 states have internal predecessors, (3486), 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) [2021-11-07 07:45:55,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 256.0) internal successors, (4864), 19 states have internal predecessors, (4864), 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) [2021-11-07 07:45:55,492 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 256.0) internal successors, (4864), 19 states have internal predecessors, (4864), 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) [2021-11-07 07:45:55,492 INFO L186 Difference]: Start difference. First operand has 239 places, 225 transitions, 540 flow. Second operand 18 states and 3486 transitions. [2021-11-07 07:45:55,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 322 transitions, 1082 flow [2021-11-07 07:45:55,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 322 transitions, 1046 flow, removed 2 selfloop flow, removed 18 redundant places. [2021-11-07 07:45:55,508 INFO L242 Difference]: Finished difference. Result has 244 places, 258 transitions, 777 flow [2021-11-07 07:45:55,509 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=777, PETRI_PLACES=244, PETRI_TRANSITIONS=258} [2021-11-07 07:45:55,509 INFO L334 CegarLoopForPetriNet]: 228 programPoint places, 16 predicate places. [2021-11-07 07:45:55,511 INFO L470 AbstractCegarLoop]: Abstraction has has 244 places, 258 transitions, 777 flow [2021-11-07 07:45:55,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 189.69230769230768) internal successors, (2466), 13 states have internal predecessors, (2466), 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) [2021-11-07 07:45:55,514 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:45:55,514 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:45:55,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:45:55,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:45:55,743 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 07:45:55,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:45:55,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1119989235, now seen corresponding path program 1 times [2021-11-07 07:45:55,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:45:55,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326968909] [2021-11-07 07:45:55,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:45:55,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:45:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:45:55,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 07:45:55,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:45:55,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326968909] [2021-11-07 07:45:55,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326968909] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:45:55,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497115518] [2021-11-07 07:45:55,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:45:55,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:45:55,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:45:55,999 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:45:56,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 07:45:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:45:56,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 07:45:56,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:45:56,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 07:45:56,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497115518] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:45:56,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:45:56,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-11-07 07:45:56,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781124721] [2021-11-07 07:45:56,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 07:45:56,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:45:56,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 07:45:56,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:45:56,841 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 256 [2021-11-07 07:45:56,844 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 258 transitions, 777 flow. Second operand has 13 states, 13 states have (on average 187.76923076923077) internal successors, (2441), 13 states have internal predecessors, (2441), 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) [2021-11-07 07:45:56,844 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:45:56,845 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 256 [2021-11-07 07:45:56,845 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:45:57,601 INFO L129 PetriNetUnfolder]: 597/1916 cut-off events. [2021-11-07 07:45:57,602 INFO L130 PetriNetUnfolder]: For 459/459 co-relation queries the response was YES. [2021-11-07 07:45:57,613 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3297 conditions, 1916 events. 597/1916 cut-off events. For 459/459 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 12046 event pairs, 306 based on Foata normal form. 0/1526 useless extension candidates. Maximal degree in co-relation 3282. Up to 755 conditions per place. [2021-11-07 07:45:57,627 INFO L132 encePairwiseOnDemand]: 229/256 looper letters, 60 selfloop transitions, 23 changer transitions 71/320 dead transitions. [2021-11-07 07:45:57,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 320 transitions, 1273 flow [2021-11-07 07:45:57,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 07:45:57,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-07 07:45:57,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3448 transitions. [2021-11-07 07:45:57,639 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7482638888888888 [2021-11-07 07:45:57,640 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3448 transitions. [2021-11-07 07:45:57,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3448 transitions. [2021-11-07 07:45:57,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:45:57,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3448 transitions. [2021-11-07 07:45:57,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 191.55555555555554) internal successors, (3448), 18 states have internal predecessors, (3448), 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) [2021-11-07 07:45:57,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 256.0) internal successors, (4864), 19 states have internal predecessors, (4864), 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) [2021-11-07 07:45:57,705 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 256.0) internal successors, (4864), 19 states have internal predecessors, (4864), 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) [2021-11-07 07:45:57,711 INFO L186 Difference]: Start difference. First operand has 244 places, 258 transitions, 777 flow. Second operand 18 states and 3448 transitions. [2021-11-07 07:45:57,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 320 transitions, 1273 flow [2021-11-07 07:45:57,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 320 transitions, 1242 flow, removed 8 selfloop flow, removed 3 redundant places. [2021-11-07 07:45:57,723 INFO L242 Difference]: Finished difference. Result has 262 places, 234 transitions, 671 flow [2021-11-07 07:45:57,723 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=671, PETRI_PLACES=262, PETRI_TRANSITIONS=234} [2021-11-07 07:45:57,724 INFO L334 CegarLoopForPetriNet]: 228 programPoint places, 34 predicate places. [2021-11-07 07:45:57,724 INFO L470 AbstractCegarLoop]: Abstraction has has 262 places, 234 transitions, 671 flow [2021-11-07 07:45:57,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 187.76923076923077) internal successors, (2441), 13 states have internal predecessors, (2441), 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) [2021-11-07 07:45:57,726 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:45:57,726 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:45:57,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:45:57,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:45:57,939 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 07:45:57,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:45:57,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1492867980, now seen corresponding path program 2 times [2021-11-07 07:45:57,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:45:57,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499087977] [2021-11-07 07:45:57,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:45:57,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:45:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:45:58,175 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 07:45:58,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:45:58,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499087977] [2021-11-07 07:45:58,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499087977] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:45:58,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902284525] [2021-11-07 07:45:58,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:45:58,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:45:58,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:45:58,178 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:45:58,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 07:45:58,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:45:58,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:45:58,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 07:45:58,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:45:59,130 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 07:45:59,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902284525] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:45:59,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:45:59,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-11-07 07:45:59,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492277179] [2021-11-07 07:45:59,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 07:45:59,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:45:59,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 07:45:59,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:45:59,141 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 256 [2021-11-07 07:45:59,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 234 transitions, 671 flow. Second operand has 13 states, 13 states have (on average 187.76923076923077) internal successors, (2441), 13 states have internal predecessors, (2441), 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) [2021-11-07 07:45:59,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:45:59,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 256 [2021-11-07 07:45:59,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:45:59,969 INFO L129 PetriNetUnfolder]: 853/2090 cut-off events. [2021-11-07 07:45:59,969 INFO L130 PetriNetUnfolder]: For 726/726 co-relation queries the response was YES. [2021-11-07 07:45:59,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3975 conditions, 2090 events. 853/2090 cut-off events. For 726/726 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 14891 event pairs, 280 based on Foata normal form. 15/1701 useless extension candidates. Maximal degree in co-relation 3956. Up to 697 conditions per place. [2021-11-07 07:46:00,001 INFO L132 encePairwiseOnDemand]: 234/256 looper letters, 59 selfloop transitions, 27 changer transitions 0/252 dead transitions. [2021-11-07 07:46:00,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 252 transitions, 891 flow [2021-11-07 07:46:00,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 07:46:00,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-07 07:46:00,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3012 transitions. [2021-11-07 07:46:00,012 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7353515625 [2021-11-07 07:46:00,013 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3012 transitions. [2021-11-07 07:46:00,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3012 transitions. [2021-11-07 07:46:00,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:46:00,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3012 transitions. [2021-11-07 07:46:00,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 188.25) internal successors, (3012), 16 states have internal predecessors, (3012), 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) [2021-11-07 07:46:00,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 256.0) internal successors, (4352), 17 states have internal predecessors, (4352), 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) [2021-11-07 07:46:00,052 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 256.0) internal successors, (4352), 17 states have internal predecessors, (4352), 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) [2021-11-07 07:46:00,052 INFO L186 Difference]: Start difference. First operand has 262 places, 234 transitions, 671 flow. Second operand 16 states and 3012 transitions. [2021-11-07 07:46:00,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 252 transitions, 891 flow [2021-11-07 07:46:00,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 252 transitions, 801 flow, removed 19 selfloop flow, removed 18 redundant places. [2021-11-07 07:46:00,064 INFO L242 Difference]: Finished difference. Result has 243 places, 236 transitions, 661 flow [2021-11-07 07:46:00,065 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=661, PETRI_PLACES=243, PETRI_TRANSITIONS=236} [2021-11-07 07:46:00,065 INFO L334 CegarLoopForPetriNet]: 228 programPoint places, 15 predicate places. [2021-11-07 07:46:00,065 INFO L470 AbstractCegarLoop]: Abstraction has has 243 places, 236 transitions, 661 flow [2021-11-07 07:46:00,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 187.76923076923077) internal successors, (2441), 13 states have internal predecessors, (2441), 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) [2021-11-07 07:46:00,066 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:46:00,068 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:46:00,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 07:46:00,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:46:00,283 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 07:46:00,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:46:00,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1552128461, now seen corresponding path program 2 times [2021-11-07 07:46:00,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:46:00,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731091031] [2021-11-07 07:46:00,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:46:00,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:46:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:46:00,476 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 07:46:00,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:46:00,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731091031] [2021-11-07 07:46:00,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731091031] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:46:00,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435323567] [2021-11-07 07:46:00,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:46:00,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:46:00,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:46:00,479 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:46:00,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 07:46:00,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:46:00,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:46:00,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 07:46:00,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:46:01,603 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 07:46:01,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435323567] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:46:01,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:46:01,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-11-07 07:46:01,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264593036] [2021-11-07 07:46:01,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 07:46:01,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:46:01,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 07:46:01,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:46:01,610 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 256 [2021-11-07 07:46:01,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 236 transitions, 661 flow. Second operand has 13 states, 13 states have (on average 189.76923076923077) internal successors, (2467), 13 states have internal predecessors, (2467), 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) [2021-11-07 07:46:01,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:46:01,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 256 [2021-11-07 07:46:01,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:46:02,340 INFO L129 PetriNetUnfolder]: 732/1698 cut-off events. [2021-11-07 07:46:02,340 INFO L130 PetriNetUnfolder]: For 213/335 co-relation queries the response was YES. [2021-11-07 07:46:02,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3080 conditions, 1698 events. 732/1698 cut-off events. For 213/335 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9787 event pairs, 251 based on Foata normal form. 42/1340 useless extension candidates. Maximal degree in co-relation 3068. Up to 646 conditions per place. [2021-11-07 07:46:02,368 INFO L132 encePairwiseOnDemand]: 234/256 looper letters, 56 selfloop transitions, 27 changer transitions 0/251 dead transitions. [2021-11-07 07:46:02,368 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 251 transitions, 863 flow [2021-11-07 07:46:02,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 07:46:02,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-07 07:46:02,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3040 transitions. [2021-11-07 07:46:02,380 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7421875 [2021-11-07 07:46:02,380 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3040 transitions. [2021-11-07 07:46:02,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3040 transitions. [2021-11-07 07:46:02,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:46:02,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3040 transitions. [2021-11-07 07:46:02,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 190.0) internal successors, (3040), 16 states have internal predecessors, (3040), 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) [2021-11-07 07:46:02,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 256.0) internal successors, (4352), 17 states have internal predecessors, (4352), 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) [2021-11-07 07:46:02,405 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 256.0) internal successors, (4352), 17 states have internal predecessors, (4352), 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) [2021-11-07 07:46:02,405 INFO L186 Difference]: Start difference. First operand has 243 places, 236 transitions, 661 flow. Second operand 16 states and 3040 transitions. [2021-11-07 07:46:02,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 251 transitions, 863 flow [2021-11-07 07:46:02,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 251 transitions, 806 flow, removed 7 selfloop flow, removed 10 redundant places. [2021-11-07 07:46:02,415 INFO L242 Difference]: Finished difference. Result has 249 places, 237 transitions, 666 flow [2021-11-07 07:46:02,416 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=666, PETRI_PLACES=249, PETRI_TRANSITIONS=237} [2021-11-07 07:46:02,416 INFO L334 CegarLoopForPetriNet]: 228 programPoint places, 21 predicate places. [2021-11-07 07:46:02,416 INFO L470 AbstractCegarLoop]: Abstraction has has 249 places, 237 transitions, 666 flow [2021-11-07 07:46:02,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 189.76923076923077) internal successors, (2467), 13 states have internal predecessors, (2467), 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) [2021-11-07 07:46:02,417 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:46:02,418 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:46:02,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 07:46:02,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:46:02,640 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 07:46:02,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:46:02,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1593876009, now seen corresponding path program 1 times [2021-11-07 07:46:02,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:46:02,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66214662] [2021-11-07 07:46:02,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:46:02,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:46:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:46:02,821 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 07:46:02,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:46:02,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66214662] [2021-11-07 07:46:02,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66214662] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:46:02,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375407784] [2021-11-07 07:46:02,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:46:02,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:46:02,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:46:02,824 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:46:02,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 07:46:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:46:03,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 07:46:03,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:46:04,133 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 07:46:04,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375407784] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:46:04,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:46:04,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-11-07 07:46:04,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691666224] [2021-11-07 07:46:04,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 07:46:04,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:46:04,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 07:46:04,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:46:04,142 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 256 [2021-11-07 07:46:04,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 237 transitions, 666 flow. Second operand has 13 states, 13 states have (on average 191.0) internal successors, (2483), 13 states have internal predecessors, (2483), 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) [2021-11-07 07:46:04,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:46:04,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 256 [2021-11-07 07:46:04,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:46:04,947 INFO L129 PetriNetUnfolder]: 644/1966 cut-off events. [2021-11-07 07:46:04,947 INFO L130 PetriNetUnfolder]: For 254/363 co-relation queries the response was YES. [2021-11-07 07:46:04,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3429 conditions, 1966 events. 644/1966 cut-off events. For 254/363 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 14259 event pairs, 241 based on Foata normal form. 92/1773 useless extension candidates. Maximal degree in co-relation 3418. Up to 535 conditions per place. [2021-11-07 07:46:04,971 INFO L132 encePairwiseOnDemand]: 234/256 looper letters, 53 selfloop transitions, 27 changer transitions 0/251 dead transitions. [2021-11-07 07:46:04,971 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 251 transitions, 860 flow [2021-11-07 07:46:04,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 07:46:04,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-07 07:46:04,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3054 transitions. [2021-11-07 07:46:04,978 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.74560546875 [2021-11-07 07:46:04,978 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3054 transitions. [2021-11-07 07:46:04,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3054 transitions. [2021-11-07 07:46:04,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:46:04,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3054 transitions. [2021-11-07 07:46:04,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 190.875) internal successors, (3054), 16 states have internal predecessors, (3054), 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) [2021-11-07 07:46:04,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 256.0) internal successors, (4352), 17 states have internal predecessors, (4352), 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) [2021-11-07 07:46:04,994 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 256.0) internal successors, (4352), 17 states have internal predecessors, (4352), 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) [2021-11-07 07:46:04,995 INFO L186 Difference]: Start difference. First operand has 249 places, 237 transitions, 666 flow. Second operand 16 states and 3054 transitions. [2021-11-07 07:46:04,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 251 transitions, 860 flow [2021-11-07 07:46:04,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 251 transitions, 821 flow, removed 0 selfloop flow, removed 13 redundant places. [2021-11-07 07:46:05,002 INFO L242 Difference]: Finished difference. Result has 252 places, 238 transitions, 689 flow [2021-11-07 07:46:05,003 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=689, PETRI_PLACES=252, PETRI_TRANSITIONS=238} [2021-11-07 07:46:05,003 INFO L334 CegarLoopForPetriNet]: 228 programPoint places, 24 predicate places. [2021-11-07 07:46:05,003 INFO L470 AbstractCegarLoop]: Abstraction has has 252 places, 238 transitions, 689 flow [2021-11-07 07:46:05,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 191.0) internal successors, (2483), 13 states have internal predecessors, (2483), 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) [2021-11-07 07:46:05,004 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:46:05,005 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:46:05,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 07:46:05,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-07 07:46:05,231 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 07:46:05,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:46:05,232 INFO L85 PathProgramCache]: Analyzing trace with hash 146691878, now seen corresponding path program 1 times [2021-11-07 07:46:05,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:46:05,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617566316] [2021-11-07 07:46:05,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:46:05,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:46:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:46:07,030 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 07:46:07,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:46:07,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617566316] [2021-11-07 07:46:07,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617566316] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:46:07,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602321153] [2021-11-07 07:46:07,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:46:07,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:46:07,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:46:07,042 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:46:07,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 07:46:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:46:07,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 113 conjunts are in the unsatisfiable core [2021-11-07 07:46:07,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:46:07,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 07:46:07,655 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 07:46:07,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-07 07:46:07,731 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-07 07:46:07,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 22 [2021-11-07 07:46:08,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:46:08,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:46:08,159 INFO L354 Elim1Store]: treesize reduction 42, result has 19.2 percent of original size [2021-11-07 07:46:08,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 27 treesize of output 37 [2021-11-07 07:46:08,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 07:46:09,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:46:09,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:46:09,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:46:09,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:46:09,984 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-07 07:46:09,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 32 treesize of output 49 [2021-11-07 07:46:10,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-07 07:46:11,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 07:46:12,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:46:12,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:46:12,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:46:12,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 07:46:12,561 INFO L354 Elim1Store]: treesize reduction 44, result has 32.3 percent of original size [2021-11-07 07:46:12,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 39 [2021-11-07 07:46:12,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-07 07:46:13,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2021-11-07 07:46:15,998 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-11-07 07:46:15,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 41 [2021-11-07 07:46:16,303 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-11-07 07:46:16,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 45 [2021-11-07 07:46:16,533 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-11-07 07:46:16,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 45 [2021-11-07 07:46:17,789 INFO L354 Elim1Store]: treesize reduction 164, result has 29.6 percent of original size [2021-11-07 07:46:17,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 106 [2021-11-07 07:47:06,333 INFO L354 Elim1Store]: treesize reduction 84, result has 38.7 percent of original size [2021-11-07 07:47:06,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 180 treesize of output 146 [2021-11-07 07:47:06,673 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:47:06,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602321153] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:47:06,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:47:06,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 50] total 89 [2021-11-07 07:47:06,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11416968] [2021-11-07 07:47:06,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2021-11-07 07:47:06,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:47:06,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-11-07 07:47:06,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=7416, Unknown=0, NotChecked=0, Total=7832 [2021-11-07 07:47:06,690 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 256 [2021-11-07 07:47:06,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 238 transitions, 689 flow. Second operand has 89 states, 89 states have (on average 61.50561797752809) internal successors, (5474), 89 states have internal predecessors, (5474), 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) [2021-11-07 07:47:06,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:47:06,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 256 [2021-11-07 07:47:06,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:47:57,042 INFO L129 PetriNetUnfolder]: 69237/106676 cut-off events. [2021-11-07 07:47:57,042 INFO L130 PetriNetUnfolder]: For 31581/31581 co-relation queries the response was YES. [2021-11-07 07:47:57,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 234366 conditions, 106676 events. 69237/106676 cut-off events. For 31581/31581 co-relation queries the response was YES. Maximal size of possible extension queue 2920. Compared 895923 event pairs, 14725 based on Foata normal form. 2/99832 useless extension candidates. Maximal degree in co-relation 234354. Up to 27493 conditions per place. [2021-11-07 07:47:58,339 INFO L132 encePairwiseOnDemand]: 176/256 looper letters, 799 selfloop transitions, 257 changer transitions 6/1114 dead transitions. [2021-11-07 07:47:58,340 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 1114 transitions, 5253 flow [2021-11-07 07:47:58,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-11-07 07:47:58,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2021-11-07 07:47:58,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 7408 transitions. [2021-11-07 07:47:58,367 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.2630681818181818 [2021-11-07 07:47:58,367 INFO L72 ComplementDD]: Start complementDD. Operand 110 states and 7408 transitions. [2021-11-07 07:47:58,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 110 states and 7408 transitions. [2021-11-07 07:47:58,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:47:58,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 110 states and 7408 transitions. [2021-11-07 07:47:58,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 111 states, 110 states have (on average 67.34545454545454) internal successors, (7408), 110 states have internal predecessors, (7408), 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) [2021-11-07 07:47:58,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 111 states, 111 states have (on average 256.0) internal successors, (28416), 111 states have internal predecessors, (28416), 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) [2021-11-07 07:47:58,459 INFO L81 ComplementDD]: Finished complementDD. Result has 111 states, 111 states have (on average 256.0) internal successors, (28416), 111 states have internal predecessors, (28416), 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) [2021-11-07 07:47:58,459 INFO L186 Difference]: Start difference. First operand has 252 places, 238 transitions, 689 flow. Second operand 110 states and 7408 transitions. [2021-11-07 07:47:58,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 1114 transitions, 5253 flow [2021-11-07 07:47:58,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 1114 transitions, 5211 flow, removed 0 selfloop flow, removed 13 redundant places. [2021-11-07 07:47:58,904 INFO L242 Difference]: Finished difference. Result has 389 places, 446 transitions, 2355 flow [2021-11-07 07:47:58,905 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=110, PETRI_FLOW=2355, PETRI_PLACES=389, PETRI_TRANSITIONS=446} [2021-11-07 07:47:58,905 INFO L334 CegarLoopForPetriNet]: 228 programPoint places, 161 predicate places. [2021-11-07 07:47:58,906 INFO L470 AbstractCegarLoop]: Abstraction has has 389 places, 446 transitions, 2355 flow [2021-11-07 07:47:58,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 61.50561797752809) internal successors, (5474), 89 states have internal predecessors, (5474), 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) [2021-11-07 07:47:58,908 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:47:58,908 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:47:58,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 07:47:59,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:47:59,131 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 07:47:59,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:47:59,132 INFO L85 PathProgramCache]: Analyzing trace with hash 740156710, now seen corresponding path program 2 times [2021-11-07 07:47:59,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:47:59,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256321033] [2021-11-07 07:47:59,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:47:59,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:47:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:48:01,697 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 07:48:01,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:48:01,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256321033] [2021-11-07 07:48:01,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256321033] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:48:01,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558639930] [2021-11-07 07:48:01,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:48:01,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:48:01,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:48:01,699 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:48:01,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d93c170-8fe1-4207-b4be-e34c7e33db7b/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 07:48:02,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:48:02,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:48:02,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 81 conjunts are in the unsatisfiable core [2021-11-07 07:48:02,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:48:06,097 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 07:48:06,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2021-11-07 07:48:10,730 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-07 07:48:10,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2021-11-07 07:48:12,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 07:48:12,110 INFO L354 Elim1Store]: treesize reduction 40, result has 50.6 percent of original size [2021-11-07 07:48:12,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 98 [2021-11-07 07:49:06,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 07:49:06,177 INFO L354 Elim1Store]: treesize reduction 112, result has 24.3 percent of original size [2021-11-07 07:49:06,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 279 treesize of output 186 [2021-11-07 07:52:05,817 INFO L354 Elim1Store]: treesize reduction 16, result has 56.8 percent of original size [2021-11-07 07:52:05,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 319 treesize of output 203 [2021-11-07 07:52:09,031 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 07:52:09,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558639930] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:52:09,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:52:09,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 41] total 81 [2021-11-07 07:52:09,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323977642] [2021-11-07 07:52:09,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2021-11-07 07:52:09,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:09,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-11-07 07:52:09,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=6201, Unknown=0, NotChecked=0, Total=6480 [2021-11-07 07:52:09,050 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 256 [2021-11-07 07:52:09,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 446 transitions, 2355 flow. Second operand has 81 states, 81 states have (on average 64.46913580246914) internal successors, (5222), 81 states have internal predecessors, (5222), 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) [2021-11-07 07:52:09,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:52:09,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 256 [2021-11-07 07:52:09,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand