./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_01-priv_nr_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe99268-6d38-48a0-9979-4afed51c5ca4/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe99268-6d38-48a0-9979-4afed51c5ca4/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe99268-6d38-48a0-9979-4afed51c5ca4/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe99268-6d38-48a0-9979-4afed51c5ca4/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_01-priv_nr_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe99268-6d38-48a0-9979-4afed51c5ca4/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe99268-6d38-48a0-9979-4afed51c5ca4/bin/uautomizer-uyxdKDjOR8 --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 2f12d466eb2f537fd698a609dad75de92993414755aa8aadb35a91de87d65611 --- 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-2329fc7 [2022-12-13 14:07:48,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:07:48,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:07:48,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:07:48,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:07:48,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:07:48,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:07:48,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:07:48,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:07:48,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:07:48,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:07:48,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:07:48,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:07:48,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:07:48,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:07:48,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:07:48,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:07:48,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:07:48,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:07:48,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:07:48,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:07:48,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:07:48,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:07:48,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:07:48,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:07:48,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:07:48,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:07:48,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:07:48,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:07:48,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:07:48,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:07:48,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:07:48,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:07:48,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:07:48,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:07:48,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:07:48,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:07:48,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:07:48,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:07:48,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:07:48,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:07:48,318 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe99268-6d38-48a0-9979-4afed51c5ca4/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 14:07:48,338 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:07:48,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:07:48,339 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:07:48,339 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:07:48,340 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:07:48,340 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:07:48,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:07:48,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:07:48,341 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:07:48,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:07:48,342 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:07:48,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:07:48,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:07:48,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:07:48,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:07:48,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:07:48,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:07:48,343 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:07:48,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:07:48,343 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:07:48,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:07:48,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:07:48,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:07:48,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:07:48,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:07:48,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:07:48,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:07:48,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:07:48,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:07:48,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:07:48,345 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:07:48,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:07:48,345 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:07:48,345 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:07:48,345 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:07:48,345 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_abe99268-6d38-48a0-9979-4afed51c5ca4/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe99268-6d38-48a0-9979-4afed51c5ca4/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f12d466eb2f537fd698a609dad75de92993414755aa8aadb35a91de87d65611 [2022-12-13 14:07:48,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:07:48,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:07:48,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:07:48,554 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:07:48,554 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:07:48,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe99268-6d38-48a0-9979-4afed51c5ca4/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/13-privatized_01-priv_nr_true.i [2022-12-13 14:07:51,190 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:07:51,379 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:07:51,380 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe99268-6d38-48a0-9979-4afed51c5ca4/sv-benchmarks/c/goblint-regression/13-privatized_01-priv_nr_true.i [2022-12-13 14:07:51,389 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe99268-6d38-48a0-9979-4afed51c5ca4/bin/uautomizer-uyxdKDjOR8/data/af7c77f0e/8905296b64c243278f710ca8f1bae88e/FLAG195866328 [2022-12-13 14:07:51,403 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe99268-6d38-48a0-9979-4afed51c5ca4/bin/uautomizer-uyxdKDjOR8/data/af7c77f0e/8905296b64c243278f710ca8f1bae88e [2022-12-13 14:07:51,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:07:51,407 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:07:51,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:07:51,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:07:51,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:07:51,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:07:51" (1/1) ... [2022-12-13 14:07:51,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ad35194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:07:51, skipping insertion in model container [2022-12-13 14:07:51,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:07:51" (1/1) ... [2022-12-13 14:07:51,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:07:51,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:07:51,571 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_abe99268-6d38-48a0-9979-4afed51c5ca4/sv-benchmarks/c/goblint-regression/13-privatized_01-priv_nr_true.i[1084,1097] [2022-12-13 14:07:51,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:07:51,666 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:07:51,674 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_abe99268-6d38-48a0-9979-4afed51c5ca4/sv-benchmarks/c/goblint-regression/13-privatized_01-priv_nr_true.i[1084,1097] [2022-12-13 14:07:51,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:07:51,713 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:07:51,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:07:51 WrapperNode [2022-12-13 14:07:51,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:07:51,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:07:51,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:07:51,715 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:07:51,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:07:51" (1/1) ... [2022-12-13 14:07:51,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:07:51" (1/1) ... [2022-12-13 14:07:51,744 INFO L138 Inliner]: procedures = 162, calls = 24, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 84 [2022-12-13 14:07:51,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:07:51,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:07:51,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:07:51,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:07:51,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:07:51" (1/1) ... [2022-12-13 14:07:51,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:07:51" (1/1) ... [2022-12-13 14:07:51,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:07:51" (1/1) ... [2022-12-13 14:07:51,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:07:51" (1/1) ... [2022-12-13 14:07:51,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:07:51" (1/1) ... [2022-12-13 14:07:51,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:07:51" (1/1) ... [2022-12-13 14:07:51,759 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:07:51" (1/1) ... [2022-12-13 14:07:51,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:07:51" (1/1) ... [2022-12-13 14:07:51,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:07:51,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:07:51,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:07:51,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:07:51,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:07:51" (1/1) ... [2022-12-13 14:07:51,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:07:51,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe99268-6d38-48a0-9979-4afed51c5ca4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:07:51,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe99268-6d38-48a0-9979-4afed51c5ca4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:07:51,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe99268-6d38-48a0-9979-4afed51c5ca4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:07:51,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 14:07:51,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 14:07:51,817 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 14:07:51,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:07:51,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 14:07:51,818 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 14:07:51,818 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 14:07:51,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:07:51,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:07:51,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:07:51,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:07:51,819 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 14:07:51,921 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:07:51,922 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:07:52,067 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:07:52,073 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:07:52,073 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 14:07:52,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:07:52 BoogieIcfgContainer [2022-12-13 14:07:52,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:07:52,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:07:52,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:07:52,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:07:52,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:07:51" (1/3) ... [2022-12-13 14:07:52,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c2b6aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:07:52, skipping insertion in model container [2022-12-13 14:07:52,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:07:51" (2/3) ... [2022-12-13 14:07:52,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c2b6aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:07:52, skipping insertion in model container [2022-12-13 14:07:52,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:07:52" (3/3) ... [2022-12-13 14:07:52,081 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_01-priv_nr_true.i [2022-12-13 14:07:52,088 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 14:07:52,097 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:07:52,097 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-13 14:07:52,097 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 14:07:52,138 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 14:07:52,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 105 transitions, 218 flow [2022-12-13 14:07:52,200 INFO L130 PetriNetUnfolder]: 4/104 cut-off events. [2022-12-13 14:07:52,200 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 14:07:52,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 104 events. 4/104 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 83 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-13 14:07:52,204 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 105 transitions, 218 flow [2022-12-13 14:07:52,207 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 96 transitions, 195 flow [2022-12-13 14:07:52,211 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 14:07:52,219 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 96 transitions, 195 flow [2022-12-13 14:07:52,221 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 96 transitions, 195 flow [2022-12-13 14:07:52,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions, 195 flow [2022-12-13 14:07:52,239 INFO L130 PetriNetUnfolder]: 4/96 cut-off events. [2022-12-13 14:07:52,239 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:07:52,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 96 events. 4/96 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 83 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-13 14:07:52,241 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2022-12-13 14:07:54,244 INFO L134 LiptonReduction]: Checked pairs total: 3621 [2022-12-13 14:07:54,244 INFO L136 LiptonReduction]: Total number of compositions: 103 [2022-12-13 14:07:54,254 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:07:54,259 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;@1c652b97, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:07:54,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 14:07:54,260 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 14:07:54,260 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:07:54,261 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:07:54,261 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 14:07:54,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:07:54,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:07:54,265 INFO L85 PathProgramCache]: Analyzing trace with hash 393, now seen corresponding path program 1 times [2022-12-13 14:07:54,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:07:54,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938019531] [2022-12-13 14:07:54,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:07:54,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:07:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:07:54,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:07:54,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:07:54,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938019531] [2022-12-13 14:07:54,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938019531] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:07:54,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:07:54,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 14:07:54,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300182525] [2022-12-13 14:07:54,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:07:54,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 14:07:54,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:07:54,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 14:07:54,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 14:07:54,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 208 [2022-12-13 14:07:54,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 53 flow. Second operand has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 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) [2022-12-13 14:07:54,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:07:54,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 208 [2022-12-13 14:07:54,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:07:54,430 INFO L130 PetriNetUnfolder]: 70/161 cut-off events. [2022-12-13 14:07:54,430 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:07:54,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 161 events. 70/161 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 587 event pairs, 70 based on Foata normal form. 16/131 useless extension candidates. Maximal degree in co-relation 316. Up to 160 conditions per place. [2022-12-13 14:07:54,432 INFO L137 encePairwiseOnDemand]: 204/208 looper letters, 19 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2022-12-13 14:07:54,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 20 transitions, 81 flow [2022-12-13 14:07:54,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 14:07:54,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 14:07:54,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 213 transitions. [2022-12-13 14:07:54,445 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5120192307692307 [2022-12-13 14:07:54,446 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 213 transitions. [2022-12-13 14:07:54,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 213 transitions. [2022-12-13 14:07:54,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:07:54,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 213 transitions. [2022-12-13 14:07:54,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 106.5) internal successors, (213), 2 states have internal predecessors, (213), 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) [2022-12-13 14:07:54,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 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) [2022-12-13 14:07:54,458 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 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) [2022-12-13 14:07:54,460 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 53 flow. Second operand 2 states and 213 transitions. [2022-12-13 14:07:54,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 20 transitions, 81 flow [2022-12-13 14:07:54,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 20 transitions, 80 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:07:54,464 INFO L231 Difference]: Finished difference. Result has 24 places, 20 transitions, 42 flow [2022-12-13 14:07:54,466 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=24, PETRI_TRANSITIONS=20} [2022-12-13 14:07:54,469 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, -2 predicate places. [2022-12-13 14:07:54,470 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 20 transitions, 42 flow [2022-12-13 14:07:54,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 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) [2022-12-13 14:07:54,470 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:07:54,470 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 14:07:54,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:07:54,471 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:07:54,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:07:54,471 INFO L85 PathProgramCache]: Analyzing trace with hash 12058664, now seen corresponding path program 1 times [2022-12-13 14:07:54,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:07:54,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681760757] [2022-12-13 14:07:54,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:07:54,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:07:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:07:54,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:07:54,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:07:54,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681760757] [2022-12-13 14:07:54,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681760757] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:07:54,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:07:54,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:07:54,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320197741] [2022-12-13 14:07:54,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:07:54,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:07:54,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:07:54,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:07:54,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:07:54,677 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 208 [2022-12-13 14:07:54,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2022-12-13 14:07:54,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:07:54,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 208 [2022-12-13 14:07:54,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:07:54,729 INFO L130 PetriNetUnfolder]: 66/153 cut-off events. [2022-12-13 14:07:54,729 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:07:54,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 153 events. 66/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 536 event pairs, 42 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 306. Up to 143 conditions per place. [2022-12-13 14:07:54,731 INFO L137 encePairwiseOnDemand]: 203/208 looper letters, 21 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2022-12-13 14:07:54,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 25 transitions, 100 flow [2022-12-13 14:07:54,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:07:54,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:07:54,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2022-12-13 14:07:54,734 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2022-12-13 14:07:54,734 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2022-12-13 14:07:54,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2022-12-13 14:07:54,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:07:54,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2022-12-13 14:07:54,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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) [2022-12-13 14:07:54,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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) [2022-12-13 14:07:54,739 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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) [2022-12-13 14:07:54,739 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 42 flow. Second operand 3 states and 296 transitions. [2022-12-13 14:07:54,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 25 transitions, 100 flow [2022-12-13 14:07:54,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 100 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 14:07:54,740 INFO L231 Difference]: Finished difference. Result has 27 places, 22 transitions, 63 flow [2022-12-13 14:07:54,740 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=27, PETRI_TRANSITIONS=22} [2022-12-13 14:07:54,741 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2022-12-13 14:07:54,741 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 22 transitions, 63 flow [2022-12-13 14:07:54,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2022-12-13 14:07:54,741 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:07:54,741 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 14:07:54,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:07:54,741 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:07:54,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:07:54,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1296533334, now seen corresponding path program 1 times [2022-12-13 14:07:54,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:07:54,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528606770] [2022-12-13 14:07:54,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:07:54,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:07:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:07:54,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:07:54,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:07:54,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528606770] [2022-12-13 14:07:54,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528606770] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:07:54,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:07:54,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:07:54,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286832535] [2022-12-13 14:07:54,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:07:54,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:07:54,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:07:54,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:07:54,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:07:54,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 208 [2022-12-13 14:07:54,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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) [2022-12-13 14:07:54,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:07:54,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 208 [2022-12-13 14:07:54,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:07:54,888 INFO L130 PetriNetUnfolder]: 72/167 cut-off events. [2022-12-13 14:07:54,888 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 14:07:54,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 167 events. 72/167 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 615 event pairs, 46 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 367. Up to 134 conditions per place. [2022-12-13 14:07:54,889 INFO L137 encePairwiseOnDemand]: 201/208 looper letters, 23 selfloop transitions, 6 changer transitions 1/31 dead transitions. [2022-12-13 14:07:54,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 143 flow [2022-12-13 14:07:54,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:07:54,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:07:54,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2022-12-13 14:07:54,892 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2022-12-13 14:07:54,892 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2022-12-13 14:07:54,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2022-12-13 14:07:54,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:07:54,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2022-12-13 14:07:54,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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) [2022-12-13 14:07:54,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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) [2022-12-13 14:07:54,896 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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) [2022-12-13 14:07:54,896 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 63 flow. Second operand 3 states and 300 transitions. [2022-12-13 14:07:54,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 143 flow [2022-12-13 14:07:54,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 140 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:07:54,897 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 106 flow [2022-12-13 14:07:54,897 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=30, PETRI_TRANSITIONS=26} [2022-12-13 14:07:54,898 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2022-12-13 14:07:54,898 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 106 flow [2022-12-13 14:07:54,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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) [2022-12-13 14:07:54,898 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:07:54,899 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 14:07:54,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 14:07:54,899 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:07:54,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:07:54,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1296743276, now seen corresponding path program 1 times [2022-12-13 14:07:54,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:07:54,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071070156] [2022-12-13 14:07:54,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:07:54,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:07:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:07:55,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:07:55,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:07:55,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071070156] [2022-12-13 14:07:55,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071070156] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:07:55,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:07:55,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:07:55,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375422145] [2022-12-13 14:07:55,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:07:55,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:07:55,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:07:55,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:07:55,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:07:55,033 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 208 [2022-12-13 14:07:55,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2022-12-13 14:07:55,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:07:55,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 208 [2022-12-13 14:07:55,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:07:55,122 INFO L130 PetriNetUnfolder]: 88/205 cut-off events. [2022-12-13 14:07:55,122 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2022-12-13 14:07:55,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 566 conditions, 205 events. 88/205 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 842 event pairs, 28 based on Foata normal form. 3/186 useless extension candidates. Maximal degree in co-relation 560. Up to 138 conditions per place. [2022-12-13 14:07:55,123 INFO L137 encePairwiseOnDemand]: 200/208 looper letters, 32 selfloop transitions, 9 changer transitions 9/50 dead transitions. [2022-12-13 14:07:55,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 50 transitions, 294 flow [2022-12-13 14:07:55,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:07:55,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 14:07:55,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 569 transitions. [2022-12-13 14:07:55,126 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45592948717948717 [2022-12-13 14:07:55,126 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 569 transitions. [2022-12-13 14:07:55,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 569 transitions. [2022-12-13 14:07:55,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:07:55,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 569 transitions. [2022-12-13 14:07:55,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 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) [2022-12-13 14:07:55,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 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) [2022-12-13 14:07:55,131 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 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) [2022-12-13 14:07:55,132 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 106 flow. Second operand 6 states and 569 transitions. [2022-12-13 14:07:55,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 50 transitions, 294 flow [2022-12-13 14:07:55,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 50 transitions, 270 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 14:07:55,135 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 150 flow [2022-12-13 14:07:55,135 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=150, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2022-12-13 14:07:55,136 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2022-12-13 14:07:55,136 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 150 flow [2022-12-13 14:07:55,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2022-12-13 14:07:55,136 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:07:55,136 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:07:55,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 14:07:55,137 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:07:55,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:07:55,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1537925490, now seen corresponding path program 1 times [2022-12-13 14:07:55,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:07:55,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051985678] [2022-12-13 14:07:55,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:07:55,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:07:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:07:55,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:07:55,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:07:55,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051985678] [2022-12-13 14:07:55,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051985678] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:07:55,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:07:55,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:07:55,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702080094] [2022-12-13 14:07:55,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:07:55,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:07:55,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:07:55,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:07:55,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:07:55,204 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 208 [2022-12-13 14:07:55,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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) [2022-12-13 14:07:55,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:07:55,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 208 [2022-12-13 14:07:55,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:07:55,233 INFO L130 PetriNetUnfolder]: 0/26 cut-off events. [2022-12-13 14:07:55,233 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-12-13 14:07:55,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 26 events. 0/26 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 10/36 useless extension candidates. Maximal degree in co-relation 0. Up to 19 conditions per place. [2022-12-13 14:07:55,234 INFO L137 encePairwiseOnDemand]: 204/208 looper letters, 13 selfloop transitions, 4 changer transitions 1/20 dead transitions. [2022-12-13 14:07:55,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 20 transitions, 123 flow [2022-12-13 14:07:55,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:07:55,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:07:55,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2022-12-13 14:07:55,235 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2022-12-13 14:07:55,236 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2022-12-13 14:07:55,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2022-12-13 14:07:55,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:07:55,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2022-12-13 14:07:55,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2022-12-13 14:07:55,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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) [2022-12-13 14:07:55,239 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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) [2022-12-13 14:07:55,239 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 150 flow. Second operand 3 states and 288 transitions. [2022-12-13 14:07:55,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 20 transitions, 123 flow [2022-12-13 14:07:55,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 103 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-12-13 14:07:55,241 INFO L231 Difference]: Finished difference. Result has 29 places, 19 transitions, 71 flow [2022-12-13 14:07:55,241 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2022-12-13 14:07:55,242 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2022-12-13 14:07:55,242 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 71 flow [2022-12-13 14:07:55,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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) [2022-12-13 14:07:55,242 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:07:55,242 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:07:55,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 14:07:55,243 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:07:55,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:07:55,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1613486426, now seen corresponding path program 1 times [2022-12-13 14:07:55,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:07:55,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528594027] [2022-12-13 14:07:55,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:07:55,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:07:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:07:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:07:55,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:07:55,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528594027] [2022-12-13 14:07:55,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528594027] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:07:55,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:07:55,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:07:55,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079974978] [2022-12-13 14:07:55,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:07:55,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:07:55,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:07:55,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:07:55,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:07:55,398 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 208 [2022-12-13 14:07:55,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 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) [2022-12-13 14:07:55,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:07:55,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 208 [2022-12-13 14:07:55,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:07:55,458 INFO L130 PetriNetUnfolder]: 0/23 cut-off events. [2022-12-13 14:07:55,458 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:07:55,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 23 events. 0/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 18 event pairs, 0 based on Foata normal form. 1/24 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2022-12-13 14:07:55,458 INFO L137 encePairwiseOnDemand]: 201/208 looper letters, 10 selfloop transitions, 2 changer transitions 9/21 dead transitions. [2022-12-13 14:07:55,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 21 transitions, 117 flow [2022-12-13 14:07:55,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:07:55,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 14:07:55,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 532 transitions. [2022-12-13 14:07:55,461 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42628205128205127 [2022-12-13 14:07:55,461 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 532 transitions. [2022-12-13 14:07:55,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 532 transitions. [2022-12-13 14:07:55,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:07:55,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 532 transitions. [2022-12-13 14:07:55,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.66666666666667) internal successors, (532), 6 states have internal predecessors, (532), 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) [2022-12-13 14:07:55,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 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) [2022-12-13 14:07:55,464 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 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) [2022-12-13 14:07:55,464 INFO L175 Difference]: Start difference. First operand has 29 places, 19 transitions, 71 flow. Second operand 6 states and 532 transitions. [2022-12-13 14:07:55,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 21 transitions, 117 flow [2022-12-13 14:07:55,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 21 transitions, 112 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:07:55,465 INFO L231 Difference]: Finished difference. Result has 32 places, 12 transitions, 45 flow [2022-12-13 14:07:55,465 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=45, PETRI_PLACES=32, PETRI_TRANSITIONS=12} [2022-12-13 14:07:55,465 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2022-12-13 14:07:55,465 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 12 transitions, 45 flow [2022-12-13 14:07:55,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 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) [2022-12-13 14:07:55,466 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:07:55,466 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:07:55,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 14:07:55,466 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:07:55,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:07:55,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1877725447, now seen corresponding path program 1 times [2022-12-13 14:07:55,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:07:55,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098897543] [2022-12-13 14:07:55,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:07:55,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:07:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:07:55,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:07:55,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:07:55,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098897543] [2022-12-13 14:07:55,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098897543] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:07:55,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:07:55,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:07:55,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842876269] [2022-12-13 14:07:55,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:07:55,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:07:55,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:07:55,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:07:55,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:07:55,601 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 208 [2022-12-13 14:07:55,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 12 transitions, 45 flow. Second operand has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 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) [2022-12-13 14:07:55,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:07:55,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 208 [2022-12-13 14:07:55,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:07:55,640 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2022-12-13 14:07:55,640 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 14:07:55,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 12 events. 0/12 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2022-12-13 14:07:55,640 INFO L137 encePairwiseOnDemand]: 201/208 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2022-12-13 14:07:55,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 12 transitions, 68 flow [2022-12-13 14:07:55,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:07:55,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 14:07:55,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 608 transitions. [2022-12-13 14:07:55,644 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4175824175824176 [2022-12-13 14:07:55,644 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 608 transitions. [2022-12-13 14:07:55,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 608 transitions. [2022-12-13 14:07:55,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:07:55,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 608 transitions. [2022-12-13 14:07:55,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.85714285714286) internal successors, (608), 7 states have internal predecessors, (608), 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) [2022-12-13 14:07:55,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 208.0) internal successors, (1664), 8 states have internal predecessors, (1664), 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) [2022-12-13 14:07:55,650 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 208.0) internal successors, (1664), 8 states have internal predecessors, (1664), 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) [2022-12-13 14:07:55,650 INFO L175 Difference]: Start difference. First operand has 32 places, 12 transitions, 45 flow. Second operand 7 states and 608 transitions. [2022-12-13 14:07:55,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 12 transitions, 68 flow [2022-12-13 14:07:55,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 12 transitions, 58 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-12-13 14:07:55,651 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2022-12-13 14:07:55,651 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2022-12-13 14:07:55,652 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, -2 predicate places. [2022-12-13 14:07:55,652 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2022-12-13 14:07:55,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 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) [2022-12-13 14:07:55,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-12-13 14:07:55,655 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-12-13 14:07:55,655 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-12-13 14:07:55,655 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-12-13 14:07:55,655 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-12-13 14:07:55,655 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-12-13 14:07:55,655 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-12-13 14:07:55,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 14:07:55,656 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:07:55,660 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 14:07:55,660 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 14:07:55,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 02:07:55 BasicIcfg [2022-12-13 14:07:55,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 14:07:55,664 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 14:07:55,665 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 14:07:55,665 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 14:07:55,665 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:07:52" (3/4) ... [2022-12-13 14:07:55,667 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 14:07:55,672 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-12-13 14:07:55,675 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-12-13 14:07:55,675 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-13 14:07:55,675 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 14:07:55,675 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 14:07:55,698 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe99268-6d38-48a0-9979-4afed51c5ca4/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 14:07:55,698 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 14:07:55,699 INFO L158 Benchmark]: Toolchain (without parser) took 4291.79ms. Allocated memory was 155.2MB in the beginning and 188.7MB in the end (delta: 33.6MB). Free memory was 120.0MB in the beginning and 79.3MB in the end (delta: 40.7MB). Peak memory consumption was 75.7MB. Max. memory is 16.1GB. [2022-12-13 14:07:55,699 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 96.5MB. Free memory is still 43.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:07:55,699 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.86ms. Allocated memory is still 155.2MB. Free memory was 120.0MB in the beginning and 100.7MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 14:07:55,699 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.36ms. Allocated memory is still 155.2MB. Free memory was 100.7MB in the beginning and 98.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:07:55,700 INFO L158 Benchmark]: Boogie Preprocessor took 16.25ms. Allocated memory is still 155.2MB. Free memory was 98.6MB in the beginning and 97.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:07:55,700 INFO L158 Benchmark]: RCFGBuilder took 312.85ms. Allocated memory is still 155.2MB. Free memory was 97.1MB in the beginning and 83.1MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 14:07:55,701 INFO L158 Benchmark]: TraceAbstraction took 3587.56ms. Allocated memory was 155.2MB in the beginning and 188.7MB in the end (delta: 33.6MB). Free memory was 82.4MB in the beginning and 82.5MB in the end (delta: -15.6kB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. [2022-12-13 14:07:55,701 INFO L158 Benchmark]: Witness Printer took 33.44ms. Allocated memory is still 188.7MB. Free memory was 82.5MB in the beginning and 79.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:07:55,703 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 96.5MB. Free memory is still 43.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.86ms. Allocated memory is still 155.2MB. Free memory was 120.0MB in the beginning and 100.7MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.36ms. Allocated memory is still 155.2MB. Free memory was 100.7MB in the beginning and 98.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.25ms. Allocated memory is still 155.2MB. Free memory was 98.6MB in the beginning and 97.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 312.85ms. Allocated memory is still 155.2MB. Free memory was 97.1MB in the beginning and 83.1MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3587.56ms. Allocated memory was 155.2MB in the beginning and 188.7MB in the end (delta: 33.6MB). Free memory was 82.4MB in the beginning and 82.5MB in the end (delta: -15.6kB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. * Witness Printer took 33.44ms. Allocated memory is still 188.7MB. Free memory was 82.5MB in the beginning and 79.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 96 PlacesBefore, 26 PlacesAfterwards, 96 TransitionsBefore, 25 TransitionsAfterwards, 1320 CoEnabledTransitionPairs, 7 FixpointIterations, 47 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 103 TotalNumberOfCompositions, 3621 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1384, independent: 1171, independent conditional: 0, independent unconditional: 1171, dependent: 213, dependent conditional: 0, dependent unconditional: 213, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 769, independent: 733, independent conditional: 0, independent unconditional: 733, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1384, independent: 438, independent conditional: 0, independent unconditional: 438, dependent: 177, dependent conditional: 0, dependent unconditional: 177, unknown: 769, unknown conditional: 0, unknown unconditional: 769] , Statistics on independence cache: Total cache size (in pairs): 55, Positive cache size: 37, Positive conditional cache size: 0, Positive unconditional cache size: 37, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 132 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 235 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 102 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 78 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 613 IncrementalHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 24 mSDtfsCounter, 613 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=150occurred in iteration=4, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 224 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 14:07:55,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe99268-6d38-48a0-9979-4afed51c5ca4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE