./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix020.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580fabc-ca1f-4b99-ac2d-0a984cfea17c/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580fabc-ca1f-4b99-ac2d-0a984cfea17c/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580fabc-ca1f-4b99-ac2d-0a984cfea17c/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580fabc-ca1f-4b99-ac2d-0a984cfea17c/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix020.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580fabc-ca1f-4b99-ac2d-0a984cfea17c/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580fabc-ca1f-4b99-ac2d-0a984cfea17c/bin/uautomizer-ug76WZFUDN --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 035ec41aa2053cde8ee24830f9eb7cf444ea0c142ead33ef0c1fe95c3a7de39e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:27:32,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:27:32,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:27:32,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:27:32,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:27:32,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:27:32,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:27:32,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:27:32,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:27:32,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:27:32,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:27:32,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:27:32,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:27:32,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:27:32,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:27:32,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:27:32,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:27:32,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:27:32,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:27:32,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:27:32,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:27:32,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:27:32,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:27:32,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:27:32,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:27:32,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:27:32,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:27:32,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:27:32,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:27:32,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:27:32,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:27:32,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:27:32,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:27:32,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:27:32,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:27:32,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:27:32,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:27:32,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:27:32,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:27:32,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:27:32,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:27:32,598 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580fabc-ca1f-4b99-ac2d-0a984cfea17c/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:27:32,637 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:27:32,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:27:32,638 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:27:32,638 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:27:32,643 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:27:32,643 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:27:32,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:27:32,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:27:32,645 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:27:32,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:27:32,646 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:27:32,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:27:32,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:27:32,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:27:32,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:27:32,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:27:32,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:27:32,648 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:27:32,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:27:32,648 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:27:32,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:27:32,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:27:32,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:27:32,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:27:32,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:27:32,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:27:32,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:27:32,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:27:32,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:27:32,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:27:32,652 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:27:32,652 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:27:32,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:27:32,652 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_a580fabc-ca1f-4b99-ac2d-0a984cfea17c/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580fabc-ca1f-4b99-ac2d-0a984cfea17c/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 035ec41aa2053cde8ee24830f9eb7cf444ea0c142ead33ef0c1fe95c3a7de39e [2022-11-20 11:27:32,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:27:32,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:27:32,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:27:32,992 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:27:32,994 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:27:32,995 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580fabc-ca1f-4b99-ac2d-0a984cfea17c/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-wmm/mix020.oepc.i [2022-11-20 11:27:36,123 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:27:36,378 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:27:36,379 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580fabc-ca1f-4b99-ac2d-0a984cfea17c/sv-benchmarks/c/pthread-wmm/mix020.oepc.i [2022-11-20 11:27:36,397 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580fabc-ca1f-4b99-ac2d-0a984cfea17c/bin/uautomizer-ug76WZFUDN/data/1508ec3bf/99dda076bd5a41e98505645a3a760611/FLAG1f2a44de1 [2022-11-20 11:27:36,416 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580fabc-ca1f-4b99-ac2d-0a984cfea17c/bin/uautomizer-ug76WZFUDN/data/1508ec3bf/99dda076bd5a41e98505645a3a760611 [2022-11-20 11:27:36,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:27:36,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:27:36,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:27:36,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:27:36,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:27:36,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:27:36" (1/1) ... [2022-11-20 11:27:36,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e63df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:27:36, skipping insertion in model container [2022-11-20 11:27:36,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:27:36" (1/1) ... [2022-11-20 11:27:36,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:27:36,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:27:36,737 WARN L237 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_a580fabc-ca1f-4b99-ac2d-0a984cfea17c/sv-benchmarks/c/pthread-wmm/mix020.oepc.i[945,958] [2022-11-20 11:27:36,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:27:36,964 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:27:36,977 WARN L237 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_a580fabc-ca1f-4b99-ac2d-0a984cfea17c/sv-benchmarks/c/pthread-wmm/mix020.oepc.i[945,958] [2022-11-20 11:27:37,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:27:37,085 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:27:37,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:27:37 WrapperNode [2022-11-20 11:27:37,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:27:37,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:27:37,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:27:37,088 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:27:37,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:27:37" (1/1) ... [2022-11-20 11:27:37,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:27:37" (1/1) ... [2022-11-20 11:27:37,183 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2022-11-20 11:27:37,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:27:37,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:27:37,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:27:37,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:27:37,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:27:37" (1/1) ... [2022-11-20 11:27:37,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:27:37" (1/1) ... [2022-11-20 11:27:37,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:27:37" (1/1) ... [2022-11-20 11:27:37,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:27:37" (1/1) ... [2022-11-20 11:27:37,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:27:37" (1/1) ... [2022-11-20 11:27:37,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:27:37" (1/1) ... [2022-11-20 11:27:37,242 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:27:37" (1/1) ... [2022-11-20 11:27:37,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:27:37" (1/1) ... [2022-11-20 11:27:37,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:27:37,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:27:37,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:27:37,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:27:37,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:27:37" (1/1) ... [2022-11-20 11:27:37,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:27:37,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580fabc-ca1f-4b99-ac2d-0a984cfea17c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:27:37,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580fabc-ca1f-4b99-ac2d-0a984cfea17c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:27:37,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a580fabc-ca1f-4b99-ac2d-0a984cfea17c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:27:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:27:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:27:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:27:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:27:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:27:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-20 11:27:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-20 11:27:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-20 11:27:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-20 11:27:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-20 11:27:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-20 11:27:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-20 11:27:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-20 11:27:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:27:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:27:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:27:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:27:37,347 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:27:37,517 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:27:37,519 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:27:38,049 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:27:38,256 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:27:38,256 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:27:38,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:27:38 BoogieIcfgContainer [2022-11-20 11:27:38,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:27:38,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:27:38,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:27:38,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:27:38,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:27:36" (1/3) ... [2022-11-20 11:27:38,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed8688c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:27:38, skipping insertion in model container [2022-11-20 11:27:38,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:27:37" (2/3) ... [2022-11-20 11:27:38,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed8688c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:27:38, skipping insertion in model container [2022-11-20 11:27:38,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:27:38" (3/3) ... [2022-11-20 11:27:38,271 INFO L112 eAbstractionObserver]: Analyzing ICFG mix020.oepc.i [2022-11-20 11:27:38,281 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:27:38,292 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:27:38,292 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 11:27:38,293 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:27:38,376 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:27:38,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 138 transitions, 296 flow [2022-11-20 11:27:38,492 INFO L130 PetriNetUnfolder]: 2/134 cut-off events. [2022-11-20 11:27:38,492 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:27:38,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 134 events. 2/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2022-11-20 11:27:38,498 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 138 transitions, 296 flow [2022-11-20 11:27:38,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 134 transitions, 280 flow [2022-11-20 11:27:38,512 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:27:38,518 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@29b4fbf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:27:38,519 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-20 11:27:38,532 INFO L130 PetriNetUnfolder]: 0/51 cut-off events. [2022-11-20 11:27:38,532 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:27:38,532 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:38,533 INFO L209 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] [2022-11-20 11:27:38,533 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:27:38,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:38,539 INFO L85 PathProgramCache]: Analyzing trace with hash -59797304, now seen corresponding path program 1 times [2022-11-20 11:27:38,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:38,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753011733] [2022-11-20 11:27:38,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:38,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:39,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:39,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:39,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753011733] [2022-11-20 11:27:39,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753011733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:39,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:39,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:27:39,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946401491] [2022-11-20 11:27:39,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:39,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:27:39,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:39,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:27:39,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:27:39,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 138 [2022-11-20 11:27:39,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 134 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:39,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:39,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 138 [2022-11-20 11:27:39,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:39,673 INFO L130 PetriNetUnfolder]: 162/548 cut-off events. [2022-11-20 11:27:39,673 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-20 11:27:39,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 548 events. 162/548 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2798 event pairs, 34 based on Foata normal form. 49/568 useless extension candidates. Maximal degree in co-relation 796. Up to 191 conditions per place. [2022-11-20 11:27:39,686 INFO L137 encePairwiseOnDemand]: 133/138 looper letters, 18 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2022-11-20 11:27:39,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 138 transitions, 337 flow [2022-11-20 11:27:39,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:27:39,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:27:39,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2022-11-20 11:27:39,708 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2022-11-20 11:27:39,709 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2022-11-20 11:27:39,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2022-11-20 11:27:39,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:39,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2022-11-20 11:27:39,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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) [2022-11-20 11:27:39,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2022-11-20 11:27:39,727 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2022-11-20 11:27:39,729 INFO L175 Difference]: Start difference. First operand has 145 places, 134 transitions, 280 flow. Second operand 3 states and 391 transitions. [2022-11-20 11:27:39,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 138 transitions, 337 flow [2022-11-20 11:27:39,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 138 transitions, 330 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:27:39,742 INFO L231 Difference]: Finished difference. Result has 141 places, 130 transitions, 272 flow [2022-11-20 11:27:39,745 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=141, PETRI_TRANSITIONS=130} [2022-11-20 11:27:39,750 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, -4 predicate places. [2022-11-20 11:27:39,750 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 130 transitions, 272 flow [2022-11-20 11:27:39,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:39,751 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:39,751 INFO L209 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] [2022-11-20 11:27:39,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:27:39,752 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:27:39,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:39,754 INFO L85 PathProgramCache]: Analyzing trace with hash 979002693, now seen corresponding path program 1 times [2022-11-20 11:27:39,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:39,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846901695] [2022-11-20 11:27:39,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:39,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:40,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:40,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:40,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846901695] [2022-11-20 11:27:40,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846901695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:40,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:40,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:27:40,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709769354] [2022-11-20 11:27:40,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:40,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:27:40,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:40,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:27:40,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:27:40,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 138 [2022-11-20 11:27:40,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 130 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 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) [2022-11-20 11:27:40,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:40,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 138 [2022-11-20 11:27:40,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:44,963 INFO L130 PetriNetUnfolder]: 9293/20712 cut-off events. [2022-11-20 11:27:44,963 INFO L131 PetriNetUnfolder]: For 880/880 co-relation queries the response was YES. [2022-11-20 11:27:45,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34545 conditions, 20712 events. 9293/20712 cut-off events. For 880/880 co-relation queries the response was YES. Maximal size of possible extension queue 921. Compared 207339 event pairs, 957 based on Foata normal form. 0/20342 useless extension candidates. Maximal degree in co-relation 34484. Up to 4819 conditions per place. [2022-11-20 11:27:45,193 INFO L137 encePairwiseOnDemand]: 127/138 looper letters, 43 selfloop transitions, 7 changer transitions 113/252 dead transitions. [2022-11-20 11:27:45,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 252 transitions, 838 flow [2022-11-20 11:27:45,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:27:45,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:27:45,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1531 transitions. [2022-11-20 11:27:45,198 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8534002229654404 [2022-11-20 11:27:45,199 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1531 transitions. [2022-11-20 11:27:45,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1531 transitions. [2022-11-20 11:27:45,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:45,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1531 transitions. [2022-11-20 11:27:45,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.76923076923077) internal successors, (1531), 13 states have internal predecessors, (1531), 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) [2022-11-20 11:27:45,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 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) [2022-11-20 11:27:45,210 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 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) [2022-11-20 11:27:45,210 INFO L175 Difference]: Start difference. First operand has 141 places, 130 transitions, 272 flow. Second operand 13 states and 1531 transitions. [2022-11-20 11:27:45,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 252 transitions, 838 flow [2022-11-20 11:27:45,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 252 transitions, 812 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:27:45,219 INFO L231 Difference]: Finished difference. Result has 163 places, 121 transitions, 340 flow [2022-11-20 11:27:45,220 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=340, PETRI_PLACES=163, PETRI_TRANSITIONS=121} [2022-11-20 11:27:45,221 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 18 predicate places. [2022-11-20 11:27:45,221 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 121 transitions, 340 flow [2022-11-20 11:27:45,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 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) [2022-11-20 11:27:45,222 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:45,222 INFO L209 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] [2022-11-20 11:27:45,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:27:45,223 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:27:45,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:45,224 INFO L85 PathProgramCache]: Analyzing trace with hash -703106615, now seen corresponding path program 1 times [2022-11-20 11:27:45,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:45,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031702257] [2022-11-20 11:27:45,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:45,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:45,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:45,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:45,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031702257] [2022-11-20 11:27:45,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031702257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:45,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:45,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:27:45,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705613157] [2022-11-20 11:27:45,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:45,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:27:45,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:45,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:27:45,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:27:45,596 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 138 [2022-11-20 11:27:45,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 121 transitions, 340 flow. Second operand has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 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) [2022-11-20 11:27:45,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:45,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 138 [2022-11-20 11:27:45,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:48,169 INFO L130 PetriNetUnfolder]: 5674/10080 cut-off events. [2022-11-20 11:27:48,170 INFO L131 PetriNetUnfolder]: For 17544/18334 co-relation queries the response was YES. [2022-11-20 11:27:48,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29604 conditions, 10080 events. 5674/10080 cut-off events. For 17544/18334 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 78557 event pairs, 2035 based on Foata normal form. 238/10054 useless extension candidates. Maximal degree in co-relation 29535. Up to 4649 conditions per place. [2022-11-20 11:27:48,280 INFO L137 encePairwiseOnDemand]: 131/138 looper letters, 29 selfloop transitions, 4 changer transitions 55/186 dead transitions. [2022-11-20 11:27:48,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 186 transitions, 850 flow [2022-11-20 11:27:48,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:27:48,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:27:48,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1097 transitions. [2022-11-20 11:27:48,284 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8832528180354268 [2022-11-20 11:27:48,285 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1097 transitions. [2022-11-20 11:27:48,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1097 transitions. [2022-11-20 11:27:48,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:48,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1097 transitions. [2022-11-20 11:27:48,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 121.88888888888889) internal successors, (1097), 9 states have internal predecessors, (1097), 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) [2022-11-20 11:27:48,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 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) [2022-11-20 11:27:48,293 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 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) [2022-11-20 11:27:48,294 INFO L175 Difference]: Start difference. First operand has 163 places, 121 transitions, 340 flow. Second operand 9 states and 1097 transitions. [2022-11-20 11:27:48,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 186 transitions, 850 flow [2022-11-20 11:27:48,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 186 transitions, 820 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-11-20 11:27:48,460 INFO L231 Difference]: Finished difference. Result has 151 places, 124 transitions, 396 flow [2022-11-20 11:27:48,461 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=396, PETRI_PLACES=151, PETRI_TRANSITIONS=124} [2022-11-20 11:27:48,462 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 6 predicate places. [2022-11-20 11:27:48,462 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 124 transitions, 396 flow [2022-11-20 11:27:48,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 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) [2022-11-20 11:27:48,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:48,463 INFO L209 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] [2022-11-20 11:27:48,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:27:48,464 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:27:48,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:48,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1577391524, now seen corresponding path program 1 times [2022-11-20 11:27:48,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:48,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652487006] [2022-11-20 11:27:48,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:48,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:48,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:48,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:48,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652487006] [2022-11-20 11:27:48,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652487006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:48,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:48,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:27:48,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249685231] [2022-11-20 11:27:48,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:48,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:27:48,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:48,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:27:48,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:27:48,880 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2022-11-20 11:27:48,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 124 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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) [2022-11-20 11:27:48,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:48,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2022-11-20 11:27:48,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:54,023 INFO L130 PetriNetUnfolder]: 17783/29793 cut-off events. [2022-11-20 11:27:54,023 INFO L131 PetriNetUnfolder]: For 32072/37458 co-relation queries the response was YES. [2022-11-20 11:27:54,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71298 conditions, 29793 events. 17783/29793 cut-off events. For 32072/37458 co-relation queries the response was YES. Maximal size of possible extension queue 2006. Compared 258362 event pairs, 1831 based on Foata normal form. 1/27853 useless extension candidates. Maximal degree in co-relation 71224. Up to 9265 conditions per place. [2022-11-20 11:27:54,496 INFO L137 encePairwiseOnDemand]: 127/138 looper letters, 93 selfloop transitions, 20 changer transitions 0/213 dead transitions. [2022-11-20 11:27:54,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 213 transitions, 890 flow [2022-11-20 11:27:54,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:27:54,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:27:54,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1217 transitions. [2022-11-20 11:27:54,501 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8818840579710145 [2022-11-20 11:27:54,502 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1217 transitions. [2022-11-20 11:27:54,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1217 transitions. [2022-11-20 11:27:54,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:54,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1217 transitions. [2022-11-20 11:27:54,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 121.7) internal successors, (1217), 10 states have internal predecessors, (1217), 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) [2022-11-20 11:27:54,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 138.0) internal successors, (1518), 11 states have internal predecessors, (1518), 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) [2022-11-20 11:27:54,515 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 138.0) internal successors, (1518), 11 states have internal predecessors, (1518), 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) [2022-11-20 11:27:54,515 INFO L175 Difference]: Start difference. First operand has 151 places, 124 transitions, 396 flow. Second operand 10 states and 1217 transitions. [2022-11-20 11:27:54,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 213 transitions, 890 flow [2022-11-20 11:27:54,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 213 transitions, 868 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-11-20 11:27:54,579 INFO L231 Difference]: Finished difference. Result has 153 places, 142 transitions, 517 flow [2022-11-20 11:27:54,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=517, PETRI_PLACES=153, PETRI_TRANSITIONS=142} [2022-11-20 11:27:54,583 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 8 predicate places. [2022-11-20 11:27:54,583 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 142 transitions, 517 flow [2022-11-20 11:27:54,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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) [2022-11-20 11:27:54,584 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:54,584 INFO L209 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] [2022-11-20 11:27:54,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:27:54,584 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:27:54,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:54,585 INFO L85 PathProgramCache]: Analyzing trace with hash -244086114, now seen corresponding path program 1 times [2022-11-20 11:27:54,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:54,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940639628] [2022-11-20 11:27:54,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:54,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:54,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:54,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:54,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940639628] [2022-11-20 11:27:54,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940639628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:54,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:54,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:27:54,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301256531] [2022-11-20 11:27:54,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:54,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:27:54,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:54,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:27:54,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:27:54,905 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 138 [2022-11-20 11:27:54,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 142 transitions, 517 flow. Second operand has 6 states, 6 states have (on average 115.33333333333333) internal successors, (692), 6 states have internal predecessors, (692), 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) [2022-11-20 11:27:54,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:54,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 138 [2022-11-20 11:27:54,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:58,403 INFO L130 PetriNetUnfolder]: 6559/16818 cut-off events. [2022-11-20 11:27:58,403 INFO L131 PetriNetUnfolder]: For 27839/30529 co-relation queries the response was YES. [2022-11-20 11:27:58,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46962 conditions, 16818 events. 6559/16818 cut-off events. For 27839/30529 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 190040 event pairs, 2395 based on Foata normal form. 359/15942 useless extension candidates. Maximal degree in co-relation 46886. Up to 2792 conditions per place. [2022-11-20 11:27:58,613 INFO L137 encePairwiseOnDemand]: 132/138 looper letters, 71 selfloop transitions, 14 changer transitions 0/201 dead transitions. [2022-11-20 11:27:58,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 201 transitions, 947 flow [2022-11-20 11:27:58,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:27:58,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:27:58,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1099 transitions. [2022-11-20 11:27:58,617 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8848631239935588 [2022-11-20 11:27:58,618 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1099 transitions. [2022-11-20 11:27:58,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1099 transitions. [2022-11-20 11:27:58,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:58,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1099 transitions. [2022-11-20 11:27:58,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 122.11111111111111) internal successors, (1099), 9 states have internal predecessors, (1099), 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) [2022-11-20 11:27:58,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 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) [2022-11-20 11:27:58,625 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 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) [2022-11-20 11:27:58,626 INFO L175 Difference]: Start difference. First operand has 153 places, 142 transitions, 517 flow. Second operand 9 states and 1099 transitions. [2022-11-20 11:27:58,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 201 transitions, 947 flow [2022-11-20 11:27:58,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 201 transitions, 937 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-20 11:27:58,696 INFO L231 Difference]: Finished difference. Result has 167 places, 150 transitions, 657 flow [2022-11-20 11:27:58,697 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=657, PETRI_PLACES=167, PETRI_TRANSITIONS=150} [2022-11-20 11:27:58,700 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 22 predicate places. [2022-11-20 11:27:58,700 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 150 transitions, 657 flow [2022-11-20 11:27:58,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.33333333333333) internal successors, (692), 6 states have internal predecessors, (692), 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) [2022-11-20 11:27:58,701 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:58,701 INFO L209 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] [2022-11-20 11:27:58,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:27:58,702 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:27:58,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:58,703 INFO L85 PathProgramCache]: Analyzing trace with hash -2147315867, now seen corresponding path program 1 times [2022-11-20 11:27:58,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:58,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926842204] [2022-11-20 11:27:58,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:58,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:59,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:59,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926842204] [2022-11-20 11:27:59,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926842204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:59,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:59,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:27:59,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427918727] [2022-11-20 11:27:59,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:59,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:27:59,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:59,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:27:59,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:27:59,254 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2022-11-20 11:27:59,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 150 transitions, 657 flow. Second operand has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 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) [2022-11-20 11:27:59,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:59,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2022-11-20 11:27:59,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:06,803 INFO L130 PetriNetUnfolder]: 23718/40774 cut-off events. [2022-11-20 11:28:06,803 INFO L131 PetriNetUnfolder]: For 79449/87120 co-relation queries the response was YES. [2022-11-20 11:28:07,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126134 conditions, 40774 events. 23718/40774 cut-off events. For 79449/87120 co-relation queries the response was YES. Maximal size of possible extension queue 2882. Compared 384388 event pairs, 1666 based on Foata normal form. 727/39423 useless extension candidates. Maximal degree in co-relation 126051. Up to 7695 conditions per place. [2022-11-20 11:28:07,172 INFO L137 encePairwiseOnDemand]: 127/138 looper letters, 118 selfloop transitions, 38 changer transitions 3/267 dead transitions. [2022-11-20 11:28:07,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 267 transitions, 1535 flow [2022-11-20 11:28:07,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:28:07,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:28:07,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1587 transitions. [2022-11-20 11:28:07,184 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8846153846153846 [2022-11-20 11:28:07,185 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1587 transitions. [2022-11-20 11:28:07,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1587 transitions. [2022-11-20 11:28:07,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:07,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1587 transitions. [2022-11-20 11:28:07,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 122.07692307692308) internal successors, (1587), 13 states have internal predecessors, (1587), 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) [2022-11-20 11:28:07,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 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) [2022-11-20 11:28:07,203 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 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) [2022-11-20 11:28:07,203 INFO L175 Difference]: Start difference. First operand has 167 places, 150 transitions, 657 flow. Second operand 13 states and 1587 transitions. [2022-11-20 11:28:07,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 267 transitions, 1535 flow [2022-11-20 11:28:08,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 267 transitions, 1499 flow, removed 15 selfloop flow, removed 1 redundant places. [2022-11-20 11:28:08,194 INFO L231 Difference]: Finished difference. Result has 184 places, 170 transitions, 914 flow [2022-11-20 11:28:08,195 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=914, PETRI_PLACES=184, PETRI_TRANSITIONS=170} [2022-11-20 11:28:08,195 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 39 predicate places. [2022-11-20 11:28:08,198 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 170 transitions, 914 flow [2022-11-20 11:28:08,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 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) [2022-11-20 11:28:08,199 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:08,200 INFO L209 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] [2022-11-20 11:28:08,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:28:08,201 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:28:08,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:08,201 INFO L85 PathProgramCache]: Analyzing trace with hash 876846542, now seen corresponding path program 1 times [2022-11-20 11:28:08,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:08,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652652684] [2022-11-20 11:28:08,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:08,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:08,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:08,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:08,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652652684] [2022-11-20 11:28:08,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652652684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:08,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:08,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:28:08,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881977925] [2022-11-20 11:28:08,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:08,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:28:08,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:08,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:28:08,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:28:08,657 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 138 [2022-11-20 11:28:08,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 170 transitions, 914 flow. Second operand has 7 states, 7 states have (on average 107.42857142857143) internal successors, (752), 7 states have internal predecessors, (752), 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) [2022-11-20 11:28:08,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:08,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 138 [2022-11-20 11:28:08,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:12,794 INFO L130 PetriNetUnfolder]: 7419/22050 cut-off events. [2022-11-20 11:28:12,794 INFO L131 PetriNetUnfolder]: For 81636/97069 co-relation queries the response was YES. [2022-11-20 11:28:12,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77756 conditions, 22050 events. 7419/22050 cut-off events. For 81636/97069 co-relation queries the response was YES. Maximal size of possible extension queue 2243. Compared 287988 event pairs, 586 based on Foata normal form. 428/21217 useless extension candidates. Maximal degree in co-relation 77660. Up to 4828 conditions per place. [2022-11-20 11:28:13,111 INFO L137 encePairwiseOnDemand]: 124/138 looper letters, 107 selfloop transitions, 43 changer transitions 9/284 dead transitions. [2022-11-20 11:28:13,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 284 transitions, 1965 flow [2022-11-20 11:28:13,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:28:13,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:28:13,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1268 transitions. [2022-11-20 11:28:13,116 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8353096179183136 [2022-11-20 11:28:13,116 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1268 transitions. [2022-11-20 11:28:13,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1268 transitions. [2022-11-20 11:28:13,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:13,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1268 transitions. [2022-11-20 11:28:13,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 115.27272727272727) internal successors, (1268), 11 states have internal predecessors, (1268), 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) [2022-11-20 11:28:13,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 138.0) internal successors, (1656), 12 states have internal predecessors, (1656), 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) [2022-11-20 11:28:13,126 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 138.0) internal successors, (1656), 12 states have internal predecessors, (1656), 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) [2022-11-20 11:28:13,126 INFO L175 Difference]: Start difference. First operand has 184 places, 170 transitions, 914 flow. Second operand 11 states and 1268 transitions. [2022-11-20 11:28:13,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 284 transitions, 1965 flow [2022-11-20 11:28:16,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 284 transitions, 1854 flow, removed 46 selfloop flow, removed 4 redundant places. [2022-11-20 11:28:16,063 INFO L231 Difference]: Finished difference. Result has 200 places, 205 transitions, 1410 flow [2022-11-20 11:28:16,063 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1410, PETRI_PLACES=200, PETRI_TRANSITIONS=205} [2022-11-20 11:28:16,064 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 55 predicate places. [2022-11-20 11:28:16,064 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 205 transitions, 1410 flow [2022-11-20 11:28:16,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.42857142857143) internal successors, (752), 7 states have internal predecessors, (752), 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) [2022-11-20 11:28:16,065 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:16,065 INFO L209 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] [2022-11-20 11:28:16,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:28:16,066 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:28:16,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:16,066 INFO L85 PathProgramCache]: Analyzing trace with hash -91255498, now seen corresponding path program 2 times [2022-11-20 11:28:16,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:16,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976127752] [2022-11-20 11:28:16,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:16,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:16,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:16,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:16,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976127752] [2022-11-20 11:28:16,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976127752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:16,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:16,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:28:16,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224636106] [2022-11-20 11:28:16,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:16,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:28:16,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:16,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:28:16,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:28:16,581 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2022-11-20 11:28:16,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 205 transitions, 1410 flow. Second operand has 8 states, 8 states have (on average 113.125) internal successors, (905), 8 states have internal predecessors, (905), 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) [2022-11-20 11:28:16,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:16,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2022-11-20 11:28:16,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:28:28,002 INFO L130 PetriNetUnfolder]: 31027/55060 cut-off events. [2022-11-20 11:28:28,002 INFO L131 PetriNetUnfolder]: For 249786/290188 co-relation queries the response was YES. [2022-11-20 11:28:28,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200163 conditions, 55060 events. 31027/55060 cut-off events. For 249786/290188 co-relation queries the response was YES. Maximal size of possible extension queue 3658. Compared 554509 event pairs, 1456 based on Foata normal form. 1081/54264 useless extension candidates. Maximal degree in co-relation 200058. Up to 6988 conditions per place. [2022-11-20 11:28:28,628 INFO L137 encePairwiseOnDemand]: 127/138 looper letters, 128 selfloop transitions, 58 changer transitions 56/360 dead transitions. [2022-11-20 11:28:28,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 360 transitions, 2996 flow [2022-11-20 11:28:28,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:28:28,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 11:28:28,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1956 transitions. [2022-11-20 11:28:28,636 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8858695652173914 [2022-11-20 11:28:28,636 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1956 transitions. [2022-11-20 11:28:28,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1956 transitions. [2022-11-20 11:28:28,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:28:28,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1956 transitions. [2022-11-20 11:28:28,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 122.25) internal successors, (1956), 16 states have internal predecessors, (1956), 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) [2022-11-20 11:28:28,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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) [2022-11-20 11:28:28,648 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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) [2022-11-20 11:28:28,649 INFO L175 Difference]: Start difference. First operand has 200 places, 205 transitions, 1410 flow. Second operand 16 states and 1956 transitions. [2022-11-20 11:28:28,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 360 transitions, 2996 flow [2022-11-20 11:28:36,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 360 transitions, 2900 flow, removed 48 selfloop flow, removed 0 redundant places. [2022-11-20 11:28:36,830 INFO L231 Difference]: Finished difference. Result has 219 places, 207 transitions, 1503 flow [2022-11-20 11:28:36,831 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1503, PETRI_PLACES=219, PETRI_TRANSITIONS=207} [2022-11-20 11:28:36,831 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 74 predicate places. [2022-11-20 11:28:36,832 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 207 transitions, 1503 flow [2022-11-20 11:28:36,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 113.125) internal successors, (905), 8 states have internal predecessors, (905), 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) [2022-11-20 11:28:36,832 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:28:36,833 INFO L209 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] [2022-11-20 11:28:36,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:28:36,833 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:28:36,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:36,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1633974575, now seen corresponding path program 1 times [2022-11-20 11:28:36,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:28:36,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972576532] [2022-11-20 11:28:36,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:36,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:28:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:38,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:28:38,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:28:38,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972576532] [2022-11-20 11:28:38,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972576532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:38,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:38,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 11:28:38,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493444848] [2022-11-20 11:28:38,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:38,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:28:38,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:28:38,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:28:38,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:28:38,528 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 138 [2022-11-20 11:28:38,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 207 transitions, 1503 flow. Second operand has 12 states, 12 states have (on average 110.0) internal successors, (1320), 12 states have internal predecessors, (1320), 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) [2022-11-20 11:28:38,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:28:38,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 138 [2022-11-20 11:28:38,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand