./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/bin/uautomizer-QkZJyEgLgS --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 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 --- 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-4e7fbc6 [2022-11-23 02:40:26,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:40:26,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:40:26,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:40:26,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:40:26,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:40:26,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:40:26,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:40:26,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:40:26,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:40:26,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:40:26,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:40:26,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:40:26,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:40:26,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:40:26,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:40:26,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:40:26,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:40:26,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:40:26,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:40:26,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:40:26,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:40:26,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:40:26,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:40:26,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:40:26,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:40:26,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:40:26,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:40:26,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:40:26,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:40:26,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:40:26,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:40:26,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:40:26,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:40:26,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:40:26,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:40:26,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:40:26,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:40:26,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:40:26,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:40:26,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:40:26,145 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 02:40:26,190 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:40:26,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:40:26,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:40:26,192 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:40:26,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:40:26,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:40:26,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:40:26,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:40:26,194 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:40:26,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:40:26,196 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:40:26,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:40:26,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:40:26,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:40:26,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:40:26,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:40:26,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:40:26,198 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:40:26,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:40:26,199 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:40:26,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:40:26,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:40:26,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:40:26,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:40:26,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:40:26,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:40:26,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:40:26,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:40:26,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:40:26,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:40:26,202 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:40:26,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:40:26,203 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:40:26,203 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:40:26,203 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_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 [2022-11-23 02:40:26,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:40:26,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:40:26,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:40:26,586 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:40:26,587 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:40:26,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/pthread/stack_longer-1.i [2022-11-23 02:40:30,345 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:40:30,782 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:40:30,783 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/sv-benchmarks/c/pthread/stack_longer-1.i [2022-11-23 02:40:30,804 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/bin/uautomizer-QkZJyEgLgS/data/aba97496e/8033182ec64940fabab22447e6cad7eb/FLAGf6e9c8199 [2022-11-23 02:40:30,829 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/bin/uautomizer-QkZJyEgLgS/data/aba97496e/8033182ec64940fabab22447e6cad7eb [2022-11-23 02:40:30,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:40:30,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:40:30,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:40:30,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:40:30,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:40:30,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:40:30" (1/1) ... [2022-11-23 02:40:30,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c75d010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:30, skipping insertion in model container [2022-11-23 02:40:30,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:40:30" (1/1) ... [2022-11-23 02:40:30,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:40:30,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:40:31,588 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_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/sv-benchmarks/c/pthread/stack_longer-1.i[41527,41540] [2022-11-23 02:40:31,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:40:31,648 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:40:31,722 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_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/sv-benchmarks/c/pthread/stack_longer-1.i[41527,41540] [2022-11-23 02:40:31,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:40:31,822 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:40:31,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:31 WrapperNode [2022-11-23 02:40:31,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:40:31,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:40:31,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:40:31,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:40:31,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:31" (1/1) ... [2022-11-23 02:40:31,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:31" (1/1) ... [2022-11-23 02:40:31,908 INFO L138 Inliner]: procedures = 277, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 155 [2022-11-23 02:40:31,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:40:31,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:40:31,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:40:31,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:40:31,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:31" (1/1) ... [2022-11-23 02:40:31,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:31" (1/1) ... [2022-11-23 02:40:31,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:31" (1/1) ... [2022-11-23 02:40:31,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:31" (1/1) ... [2022-11-23 02:40:31,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:31" (1/1) ... [2022-11-23 02:40:31,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:31" (1/1) ... [2022-11-23 02:40:31,994 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:31" (1/1) ... [2022-11-23 02:40:31,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:31" (1/1) ... [2022-11-23 02:40:32,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:40:32,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:40:32,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:40:32,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:40:32,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:31" (1/1) ... [2022-11-23 02:40:32,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:40:32,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:40:32,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:40:32,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:40:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-23 02:40:32,100 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-23 02:40:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-23 02:40:32,100 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-23 02:40:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:40:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:40:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 02:40:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:40:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-23 02:40:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:40:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:40:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:40:32,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:40:32,104 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 02:40:32,333 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:40:32,335 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:40:32,743 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:40:32,754 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:40:32,754 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 02:40:32,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:40:32 BoogieIcfgContainer [2022-11-23 02:40:32,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:40:32,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:40:32,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:40:32,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:40:32,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:40:30" (1/3) ... [2022-11-23 02:40:32,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326aa3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:40:32, skipping insertion in model container [2022-11-23 02:40:32,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:31" (2/3) ... [2022-11-23 02:40:32,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326aa3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:40:32, skipping insertion in model container [2022-11-23 02:40:32,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:40:32" (3/3) ... [2022-11-23 02:40:32,769 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2022-11-23 02:40:32,781 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 02:40:32,795 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:40:32,795 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 02:40:32,796 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 02:40:32,921 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-23 02:40:32,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 179 transitions, 374 flow [2022-11-23 02:40:33,067 INFO L130 PetriNetUnfolder]: 10/177 cut-off events. [2022-11-23 02:40:33,068 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 02:40:33,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 177 events. 10/177 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 432 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 135. Up to 3 conditions per place. [2022-11-23 02:40:33,083 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 179 transitions, 374 flow [2022-11-23 02:40:33,089 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 167 transitions, 343 flow [2022-11-23 02:40:33,094 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:40:33,113 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 167 transitions, 343 flow [2022-11-23 02:40:33,117 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 167 transitions, 343 flow [2022-11-23 02:40:33,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 167 transitions, 343 flow [2022-11-23 02:40:33,175 INFO L130 PetriNetUnfolder]: 10/167 cut-off events. [2022-11-23 02:40:33,176 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 02:40:33,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 167 events. 10/167 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 338 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 135. Up to 3 conditions per place. [2022-11-23 02:40:33,186 INFO L119 LiptonReduction]: Number of co-enabled transitions 9552 [2022-11-23 02:40:39,745 INFO L134 LiptonReduction]: Checked pairs total: 12217 [2022-11-23 02:40:39,745 INFO L136 LiptonReduction]: Total number of compositions: 163 [2022-11-23 02:40:39,793 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:40:39,802 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;@75ac0a8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:40:39,802 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-23 02:40:39,808 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2022-11-23 02:40:39,811 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 02:40:39,812 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:40:39,814 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 02:40:39,815 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:40:39,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:40:39,824 INFO L85 PathProgramCache]: Analyzing trace with hash -62615369, now seen corresponding path program 1 times [2022-11-23 02:40:39,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:40:39,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943623363] [2022-11-23 02:40:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:40:39,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:40:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:40,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:40:40,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:40:40,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943623363] [2022-11-23 02:40:40,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943623363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:40:40,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:40:40,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:40:40,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663452001] [2022-11-23 02:40:40,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:40:40,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:40:40,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:40:40,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:40:40,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:40:40,251 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 342 [2022-11-23 02:40:40,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:40,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:40:40,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 342 [2022-11-23 02:40:40,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:40:40,613 INFO L130 PetriNetUnfolder]: 717/1158 cut-off events. [2022-11-23 02:40:40,614 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2022-11-23 02:40:40,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2376 conditions, 1158 events. 717/1158 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4432 event pairs, 263 based on Foata normal form. 0/898 useless extension candidates. Maximal degree in co-relation 2192. Up to 697 conditions per place. [2022-11-23 02:40:40,631 INFO L137 encePairwiseOnDemand]: 337/342 looper letters, 52 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2022-11-23 02:40:40,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 55 transitions, 235 flow [2022-11-23 02:40:40,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:40:40,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:40:40,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 549 transitions. [2022-11-23 02:40:40,662 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5350877192982456 [2022-11-23 02:40:40,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 549 transitions. [2022-11-23 02:40:40,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 549 transitions. [2022-11-23 02:40:40,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:40:40,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 549 transitions. [2022-11-23 02:40:40,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:40,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:40,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:40,699 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 73 flow. Second operand 3 states and 549 transitions. [2022-11-23 02:40:40,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 55 transitions, 235 flow [2022-11-23 02:40:40,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 55 transitions, 227 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-23 02:40:40,710 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 92 flow [2022-11-23 02:40:40,713 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2022-11-23 02:40:40,719 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2022-11-23 02:40:40,720 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 92 flow [2022-11-23 02:40:40,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:40,721 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:40:40,721 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:40:40,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:40:40,721 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:40:40,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:40:40,727 INFO L85 PathProgramCache]: Analyzing trace with hash 610794224, now seen corresponding path program 1 times [2022-11-23 02:40:40,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:40:40,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072796810] [2022-11-23 02:40:40,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:40:40,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:40:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:40,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:40:40,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:40:40,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072796810] [2022-11-23 02:40:40,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072796810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:40:40,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:40:40,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:40:40,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135197845] [2022-11-23 02:40:40,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:40:40,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:40:40,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:40:40,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:40:40,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:40:40,978 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 342 [2022-11-23 02:40:40,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:40,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:40:40,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 342 [2022-11-23 02:40:40,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:40:41,245 INFO L130 PetriNetUnfolder]: 835/1360 cut-off events. [2022-11-23 02:40:41,245 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2022-11-23 02:40:41,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2951 conditions, 1360 events. 835/1360 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5477 event pairs, 371 based on Foata normal form. 26/1114 useless extension candidates. Maximal degree in co-relation 2678. Up to 1061 conditions per place. [2022-11-23 02:40:41,255 INFO L137 encePairwiseOnDemand]: 338/342 looper letters, 48 selfloop transitions, 2 changer transitions 3/53 dead transitions. [2022-11-23 02:40:41,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 53 transitions, 243 flow [2022-11-23 02:40:41,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:40:41,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:40:41,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 548 transitions. [2022-11-23 02:40:41,259 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5341130604288499 [2022-11-23 02:40:41,259 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 548 transitions. [2022-11-23 02:40:41,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 548 transitions. [2022-11-23 02:40:41,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:40:41,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 548 transitions. [2022-11-23 02:40:41,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:41,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:41,267 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:41,267 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 92 flow. Second operand 3 states and 548 transitions. [2022-11-23 02:40:41,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 53 transitions, 243 flow [2022-11-23 02:40:41,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 53 transitions, 235 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:40:41,271 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 102 flow [2022-11-23 02:40:41,271 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2022-11-23 02:40:41,272 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2022-11-23 02:40:41,273 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 102 flow [2022-11-23 02:40:41,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:41,274 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:40:41,274 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:40:41,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:40:41,275 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:40:41,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:40:41,276 INFO L85 PathProgramCache]: Analyzing trace with hash -311280786, now seen corresponding path program 1 times [2022-11-23 02:40:41,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:40:41,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100064061] [2022-11-23 02:40:41,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:40:41,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:40:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:41,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:40:41,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:40:41,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100064061] [2022-11-23 02:40:41,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100064061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:40:41,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:40:41,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:40:41,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741578723] [2022-11-23 02:40:41,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:40:41,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:40:41,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:40:41,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:40:41,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:40:41,416 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 342 [2022-11-23 02:40:41,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:41,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:40:41,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 342 [2022-11-23 02:40:41,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:40:41,734 INFO L130 PetriNetUnfolder]: 877/1426 cut-off events. [2022-11-23 02:40:41,734 INFO L131 PetriNetUnfolder]: For 160/160 co-relation queries the response was YES. [2022-11-23 02:40:41,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3212 conditions, 1426 events. 877/1426 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5929 event pairs, 623 based on Foata normal form. 48/1218 useless extension candidates. Maximal degree in co-relation 2932. Up to 1303 conditions per place. [2022-11-23 02:40:41,747 INFO L137 encePairwiseOnDemand]: 339/342 looper letters, 49 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2022-11-23 02:40:41,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 53 transitions, 260 flow [2022-11-23 02:40:41,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:40:41,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:40:41,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 542 transitions. [2022-11-23 02:40:41,751 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5282651072124757 [2022-11-23 02:40:41,751 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 542 transitions. [2022-11-23 02:40:41,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 542 transitions. [2022-11-23 02:40:41,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:40:41,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 542 transitions. [2022-11-23 02:40:41,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:41,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:41,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:41,758 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 102 flow. Second operand 3 states and 542 transitions. [2022-11-23 02:40:41,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 53 transitions, 260 flow [2022-11-23 02:40:41,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 53 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:40:41,762 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 120 flow [2022-11-23 02:40:41,762 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2022-11-23 02:40:41,764 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2022-11-23 02:40:41,765 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 120 flow [2022-11-23 02:40:41,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:41,765 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:40:41,766 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:40:41,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:40:41,766 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:40:41,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:40:41,767 INFO L85 PathProgramCache]: Analyzing trace with hash 764416028, now seen corresponding path program 1 times [2022-11-23 02:40:41,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:40:41,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080719478] [2022-11-23 02:40:41,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:40:41,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:40:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:40:42,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:40:42,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080719478] [2022-11-23 02:40:42,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080719478] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:40:42,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461381173] [2022-11-23 02:40:42,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:40:42,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:40:42,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:40:42,009 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:40:42,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:40:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:42,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 02:40:42,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:40:42,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:40:42,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:40:42,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:40:42,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461381173] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:40:42,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:40:42,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-23 02:40:42,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448622469] [2022-11-23 02:40:42,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:40:42,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 02:40:42,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:40:42,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 02:40:42,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:40:42,368 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 342 [2022-11-23 02:40:42,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 120 flow. Second operand has 10 states, 10 states have (on average 164.6) internal successors, (1646), 10 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:42,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:40:42,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 342 [2022-11-23 02:40:42,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:40:43,353 INFO L130 PetriNetUnfolder]: 1642/2667 cut-off events. [2022-11-23 02:40:43,354 INFO L131 PetriNetUnfolder]: For 937/937 co-relation queries the response was YES. [2022-11-23 02:40:43,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6405 conditions, 2667 events. 1642/2667 cut-off events. For 937/937 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 12063 event pairs, 310 based on Foata normal form. 44/2231 useless extension candidates. Maximal degree in co-relation 5926. Up to 816 conditions per place. [2022-11-23 02:40:43,372 INFO L137 encePairwiseOnDemand]: 336/342 looper letters, 142 selfloop transitions, 17 changer transitions 0/159 dead transitions. [2022-11-23 02:40:43,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 159 transitions, 783 flow [2022-11-23 02:40:43,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:40:43,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-23 02:40:43,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1607 transitions. [2022-11-23 02:40:43,379 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5220922677063028 [2022-11-23 02:40:43,380 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1607 transitions. [2022-11-23 02:40:43,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1607 transitions. [2022-11-23 02:40:43,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:40:43,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1607 transitions. [2022-11-23 02:40:43,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 178.55555555555554) internal successors, (1607), 9 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:43,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 342.0) internal successors, (3420), 10 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:43,400 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 342.0) internal successors, (3420), 10 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:43,400 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 120 flow. Second operand 9 states and 1607 transitions. [2022-11-23 02:40:43,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 159 transitions, 783 flow [2022-11-23 02:40:43,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 159 transitions, 771 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:40:43,409 INFO L231 Difference]: Finished difference. Result has 48 places, 51 transitions, 246 flow [2022-11-23 02:40:43,409 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=246, PETRI_PLACES=48, PETRI_TRANSITIONS=51} [2022-11-23 02:40:43,410 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2022-11-23 02:40:43,411 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 51 transitions, 246 flow [2022-11-23 02:40:43,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 164.6) internal successors, (1646), 10 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:43,412 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:40:43,413 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:40:43,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:40:43,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:40:43,621 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:40:43,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:40:43,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1395771803, now seen corresponding path program 1 times [2022-11-23 02:40:43,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:40:43,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106454478] [2022-11-23 02:40:43,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:40:43,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:40:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:43,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:40:43,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:40:43,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106454478] [2022-11-23 02:40:43,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106454478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:40:43,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:40:43,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:40:43,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561200190] [2022-11-23 02:40:43,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:40:43,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:40:43,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:40:43,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:40:43,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:40:43,762 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 342 [2022-11-23 02:40:43,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 51 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:43,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:40:43,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 342 [2022-11-23 02:40:43,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:40:43,980 INFO L130 PetriNetUnfolder]: 604/1097 cut-off events. [2022-11-23 02:40:43,981 INFO L131 PetriNetUnfolder]: For 320/320 co-relation queries the response was YES. [2022-11-23 02:40:44,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2717 conditions, 1097 events. 604/1097 cut-off events. For 320/320 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4487 event pairs, 98 based on Foata normal form. 0/985 useless extension candidates. Maximal degree in co-relation 2210. Up to 848 conditions per place. [2022-11-23 02:40:44,025 INFO L137 encePairwiseOnDemand]: 336/342 looper letters, 47 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2022-11-23 02:40:44,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 53 transitions, 322 flow [2022-11-23 02:40:44,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:40:44,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:40:44,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2022-11-23 02:40:44,028 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5165692007797271 [2022-11-23 02:40:44,029 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2022-11-23 02:40:44,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2022-11-23 02:40:44,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:40:44,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2022-11-23 02:40:44,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:44,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:44,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:44,035 INFO L175 Difference]: Start difference. First operand has 48 places, 51 transitions, 246 flow. Second operand 3 states and 530 transitions. [2022-11-23 02:40:44,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 53 transitions, 322 flow [2022-11-23 02:40:44,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 53 transitions, 320 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-23 02:40:44,040 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 205 flow [2022-11-23 02:40:44,041 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2022-11-23 02:40:44,042 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2022-11-23 02:40:44,042 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 205 flow [2022-11-23 02:40:44,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:44,043 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:40:44,043 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:40:44,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:40:44,043 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:40:44,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:40:44,044 INFO L85 PathProgramCache]: Analyzing trace with hash 2141365548, now seen corresponding path program 1 times [2022-11-23 02:40:44,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:40:44,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527799334] [2022-11-23 02:40:44,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:40:44,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:40:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:44,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:40:44,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:40:44,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527799334] [2022-11-23 02:40:44,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527799334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:40:44,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:40:44,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:40:44,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966799810] [2022-11-23 02:40:44,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:40:44,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:40:44,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:40:44,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:40:44,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:40:44,219 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 342 [2022-11-23 02:40:44,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 205 flow. Second operand has 5 states, 5 states have (on average 164.4) internal successors, (822), 5 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:44,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:40:44,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 342 [2022-11-23 02:40:44,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:40:44,588 INFO L130 PetriNetUnfolder]: 718/1305 cut-off events. [2022-11-23 02:40:44,588 INFO L131 PetriNetUnfolder]: For 471/471 co-relation queries the response was YES. [2022-11-23 02:40:44,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3402 conditions, 1305 events. 718/1305 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5327 event pairs, 208 based on Foata normal form. 12/1279 useless extension candidates. Maximal degree in co-relation 2772. Up to 523 conditions per place. [2022-11-23 02:40:44,598 INFO L137 encePairwiseOnDemand]: 336/342 looper letters, 78 selfloop transitions, 10 changer transitions 0/88 dead transitions. [2022-11-23 02:40:44,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 88 transitions, 515 flow [2022-11-23 02:40:44,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:40:44,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:40:44,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 886 transitions. [2022-11-23 02:40:44,603 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5181286549707602 [2022-11-23 02:40:44,603 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 886 transitions. [2022-11-23 02:40:44,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 886 transitions. [2022-11-23 02:40:44,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:40:44,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 886 transitions. [2022-11-23 02:40:44,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 177.2) internal successors, (886), 5 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:44,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 342.0) internal successors, (2052), 6 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:44,613 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 342.0) internal successors, (2052), 6 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:44,613 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 205 flow. Second operand 5 states and 886 transitions. [2022-11-23 02:40:44,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 88 transitions, 515 flow [2022-11-23 02:40:44,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 88 transitions, 499 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:40:44,618 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 249 flow [2022-11-23 02:40:44,619 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=249, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2022-11-23 02:40:44,620 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 19 predicate places. [2022-11-23 02:40:44,620 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 249 flow [2022-11-23 02:40:44,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.4) internal successors, (822), 5 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:44,621 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:40:44,621 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:40:44,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 02:40:44,622 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:40:44,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:40:44,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1851773910, now seen corresponding path program 1 times [2022-11-23 02:40:44,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:40:44,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676222855] [2022-11-23 02:40:44,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:40:44,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:40:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:45,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:40:45,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:40:45,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676222855] [2022-11-23 02:40:45,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676222855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:40:45,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:40:45,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 02:40:45,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795238367] [2022-11-23 02:40:45,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:40:45,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 02:40:45,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:40:45,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 02:40:45,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:40:46,335 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 342 [2022-11-23 02:40:46,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 249 flow. Second operand has 10 states, 10 states have (on average 150.1) internal successors, (1501), 10 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:46,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:40:46,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 342 [2022-11-23 02:40:46,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:40:47,249 INFO L130 PetriNetUnfolder]: 1048/1902 cut-off events. [2022-11-23 02:40:47,249 INFO L131 PetriNetUnfolder]: For 1201/1201 co-relation queries the response was YES. [2022-11-23 02:40:47,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4930 conditions, 1902 events. 1048/1902 cut-off events. For 1201/1201 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 8911 event pairs, 308 based on Foata normal form. 0/1822 useless extension candidates. Maximal degree in co-relation 2940. Up to 1161 conditions per place. [2022-11-23 02:40:47,263 INFO L137 encePairwiseOnDemand]: 333/342 looper letters, 110 selfloop transitions, 10 changer transitions 4/124 dead transitions. [2022-11-23 02:40:47,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 124 transitions, 763 flow [2022-11-23 02:40:47,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 02:40:47,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-23 02:40:47,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1291 transitions. [2022-11-23 02:40:47,269 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4718567251461988 [2022-11-23 02:40:47,269 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1291 transitions. [2022-11-23 02:40:47,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1291 transitions. [2022-11-23 02:40:47,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:40:47,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1291 transitions. [2022-11-23 02:40:47,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 161.375) internal successors, (1291), 8 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:47,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 342.0) internal successors, (3078), 9 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:47,283 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 342.0) internal successors, (3078), 9 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:47,283 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 249 flow. Second operand 8 states and 1291 transitions. [2022-11-23 02:40:47,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 124 transitions, 763 flow [2022-11-23 02:40:47,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 124 transitions, 749 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-23 02:40:47,293 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 315 flow [2022-11-23 02:40:47,294 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=315, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2022-11-23 02:40:47,296 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2022-11-23 02:40:47,296 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 315 flow [2022-11-23 02:40:47,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 150.1) internal successors, (1501), 10 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:47,298 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:40:47,298 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:40:47,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 02:40:47,298 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:40:47,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:40:47,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1726004592, now seen corresponding path program 2 times [2022-11-23 02:40:47,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:40:47,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729783744] [2022-11-23 02:40:47,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:40:47,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:40:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:48,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:40:48,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:40:48,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729783744] [2022-11-23 02:40:48,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729783744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:40:48,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:40:48,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 02:40:48,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833438159] [2022-11-23 02:40:48,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:40:48,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 02:40:48,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:40:48,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 02:40:48,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:40:48,886 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 342 [2022-11-23 02:40:48,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 315 flow. Second operand has 10 states, 10 states have (on average 150.1) internal successors, (1501), 10 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:48,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:40:48,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 342 [2022-11-23 02:40:48,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:40:50,023 INFO L130 PetriNetUnfolder]: 1328/2408 cut-off events. [2022-11-23 02:40:50,023 INFO L131 PetriNetUnfolder]: For 1536/1536 co-relation queries the response was YES. [2022-11-23 02:40:50,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6596 conditions, 2408 events. 1328/2408 cut-off events. For 1536/1536 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 11667 event pairs, 400 based on Foata normal form. 0/2298 useless extension candidates. Maximal degree in co-relation 4280. Up to 1080 conditions per place. [2022-11-23 02:40:50,045 INFO L137 encePairwiseOnDemand]: 334/342 looper letters, 110 selfloop transitions, 14 changer transitions 4/128 dead transitions. [2022-11-23 02:40:50,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 128 transitions, 846 flow [2022-11-23 02:40:50,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 02:40:50,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-23 02:40:50,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1291 transitions. [2022-11-23 02:40:50,051 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4718567251461988 [2022-11-23 02:40:50,052 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1291 transitions. [2022-11-23 02:40:50,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1291 transitions. [2022-11-23 02:40:50,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:40:50,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1291 transitions. [2022-11-23 02:40:50,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 161.375) internal successors, (1291), 8 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:50,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 342.0) internal successors, (3078), 9 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:50,066 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 342.0) internal successors, (3078), 9 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:50,067 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 315 flow. Second operand 8 states and 1291 transitions. [2022-11-23 02:40:50,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 128 transitions, 846 flow [2022-11-23 02:40:50,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 128 transitions, 846 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:40:50,077 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 395 flow [2022-11-23 02:40:50,078 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=395, PETRI_PLACES=73, PETRI_TRANSITIONS=60} [2022-11-23 02:40:50,082 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 39 predicate places. [2022-11-23 02:40:50,083 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 395 flow [2022-11-23 02:40:50,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 150.1) internal successors, (1501), 10 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:40:50,085 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:40:50,086 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:40:50,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 02:40:50,086 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:40:50,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:40:50,087 INFO L85 PathProgramCache]: Analyzing trace with hash -980557647, now seen corresponding path program 1 times [2022-11-23 02:40:50,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:40:50,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873085182] [2022-11-23 02:40:50,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:40:50,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:40:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:40:50,163 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 02:40:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:40:50,262 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 02:40:50,262 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 02:40:50,266 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-11-23 02:40:50,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2022-11-23 02:40:50,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-11-23 02:40:50,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-11-23 02:40:50,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-11-23 02:40:50,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-23 02:40:50,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 02:40:50,271 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:40:50,280 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 02:40:50,280 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 02:40:50,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:40:50 BasicIcfg [2022-11-23 02:40:50,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 02:40:50,379 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 02:40:50,380 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 02:40:50,380 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 02:40:50,380 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:40:32" (3/4) ... [2022-11-23 02:40:50,383 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-23 02:40:50,451 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 02:40:50,451 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 02:40:50,452 INFO L158 Benchmark]: Toolchain (without parser) took 19612.96ms. Allocated memory was 157.3MB in the beginning and 226.5MB in the end (delta: 69.2MB). Free memory was 111.5MB in the beginning and 65.0MB in the end (delta: 46.5MB). Peak memory consumption was 118.0MB. Max. memory is 16.1GB. [2022-11-23 02:40:50,453 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 125.8MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:40:50,453 INFO L158 Benchmark]: CACSL2BoogieTranslator took 980.82ms. Allocated memory is still 157.3MB. Free memory was 111.5MB in the beginning and 82.1MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-23 02:40:50,453 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.00ms. Allocated memory is still 157.3MB. Free memory was 82.1MB in the beginning and 79.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 02:40:50,454 INFO L158 Benchmark]: Boogie Preprocessor took 97.63ms. Allocated memory is still 157.3MB. Free memory was 79.5MB in the beginning and 78.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 02:40:50,454 INFO L158 Benchmark]: RCFGBuilder took 745.53ms. Allocated memory is still 157.3MB. Free memory was 77.4MB in the beginning and 114.0MB in the end (delta: -36.6MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2022-11-23 02:40:50,455 INFO L158 Benchmark]: TraceAbstraction took 17618.11ms. Allocated memory was 157.3MB in the beginning and 226.5MB in the end (delta: 69.2MB). Free memory was 113.1MB in the beginning and 74.4MB in the end (delta: 38.7MB). Peak memory consumption was 109.7MB. Max. memory is 16.1GB. [2022-11-23 02:40:50,455 INFO L158 Benchmark]: Witness Printer took 72.18ms. Allocated memory is still 226.5MB. Free memory was 74.4MB in the beginning and 65.0MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 02:40:50,457 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 125.8MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 980.82ms. Allocated memory is still 157.3MB. Free memory was 111.5MB in the beginning and 82.1MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.00ms. Allocated memory is still 157.3MB. Free memory was 82.1MB in the beginning and 79.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 97.63ms. Allocated memory is still 157.3MB. Free memory was 79.5MB in the beginning and 78.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 745.53ms. Allocated memory is still 157.3MB. Free memory was 77.4MB in the beginning and 114.0MB in the end (delta: -36.6MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. * TraceAbstraction took 17618.11ms. Allocated memory was 157.3MB in the beginning and 226.5MB in the end (delta: 69.2MB). Free memory was 113.1MB in the beginning and 74.4MB in the end (delta: 38.7MB). Peak memory consumption was 109.7MB. Max. memory is 16.1GB. * Witness Printer took 72.18ms. Allocated memory is still 226.5MB. Free memory was 74.4MB in the beginning and 65.0MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.6s, 164 PlacesBefore, 34 PlacesAfterwards, 167 TransitionsBefore, 32 TransitionsAfterwards, 9552 CoEnabledTransitionPairs, 7 FixpointIterations, 29 TrivialSequentialCompositions, 104 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 25 ConcurrentYvCompositions, 5 ChoiceCompositions, 163 TotalNumberOfCompositions, 12217 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9489, independent: 9295, independent conditional: 0, independent unconditional: 9295, dependent: 194, dependent conditional: 0, dependent unconditional: 194, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7012, independent: 6933, independent conditional: 0, independent unconditional: 6933, dependent: 79, dependent conditional: 0, dependent unconditional: 79, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7012, independent: 6912, independent conditional: 0, independent unconditional: 6912, dependent: 100, dependent conditional: 0, dependent unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 100, independent: 21, independent conditional: 0, independent unconditional: 21, dependent: 79, dependent conditional: 0, dependent unconditional: 79, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 315, independent: 65, independent conditional: 0, independent unconditional: 65, dependent: 250, dependent conditional: 0, dependent unconditional: 250, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 9489, independent: 2362, independent conditional: 0, independent unconditional: 2362, dependent: 115, dependent conditional: 0, dependent unconditional: 115, unknown: 7012, unknown conditional: 0, unknown unconditional: 7012] , Statistics on independence cache: Total cache size (in pairs): 239, Positive cache size: 216, Positive conditional cache size: 0, Positive unconditional cache size: 216, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 940]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L935] 0 static int top=0; [L936] 0 static unsigned int arr[(400)]; [L937] 0 pthread_mutex_t m; [L938] 0 _Bool flag=(0); [L1019] 0 pthread_t id1, id2; [L1021] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={3:0}, flag=0, id1={6:0}, id2={5:0}, m={4:0}, pthread_create(&id1, ((void *)0), t1, ((void *)0))=-2, top=0] [L988] 1 int i; [L989] 1 unsigned int tmp; [L990] 1 i=0 VAL [#in~arg={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L1022] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={3:0}, flag=0, id1={6:0}, id2={5:0}, m={4:0}, pthread_create(&id2, ((void *)0), t2, ((void *)0))=-1, top=0] [L1004] 2 int i; [L1005] 2 i=0 VAL [#in~arg={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L990] COND TRUE 1 i<(400) [L993] 1 tmp = __VERIFIER_nondet_uint() [L994] CALL 1 assume_abort_if_not(tmp < (400)) [L23] COND FALSE 1 !(!cond) [L994] RET 1 assume_abort_if_not(tmp < (400)) [L995] CALL, EXPR 1 push(arr,tmp) [L960] COND FALSE 1 !(top==(400)) [L967] CALL, EXPR 1 get_top() [L952] 1 return top; [L967] RET, EXPR 1 get_top() [L967] 1 stack[get_top()] = x [L968] CALL 1 inc_top() [L944] 1 top++ [L968] RET 1 inc_top() [L970] 1 return 0; [L995] RET, EXPR 1 push(arr,tmp) [L995] COND FALSE 1 !(push(arr,tmp)==(-1)) [L997] 1 flag=(1) VAL [#in~arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=0, m={4:0}, tmp=399, top=1] [L990] 1 i++ VAL [#in~arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, tmp=399, top=1] [L1005] COND TRUE 2 i<(400) [L1008] COND TRUE 2 \read(flag) [L1010] CALL, EXPR 2 pop(arr) [L974] CALL, EXPR 2 get_top() [L952] 2 return top; [L974] RET, EXPR 2 get_top() [L974] COND FALSE 2 !(get_top()==0) [L981] CALL 2 dec_top() [L948] 2 top-- [L981] RET 2 dec_top() [L982] CALL, EXPR 2 get_top() [L952] 2 return top; [L982] RET, EXPR 2 get_top() [L982] EXPR 2 stack[get_top()] [L982] 2 return stack[get_top()]; [L1010] RET, EXPR 2 pop(arr) [L1010] COND FALSE 2 !(!(pop(arr)!=(-2))) [L1005] 2 i++ VAL [#in~arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, top=0] [L1005] COND TRUE 2 i<(400) [L1008] COND TRUE 2 \read(flag) [L1010] CALL, EXPR 2 pop(arr) [L974] CALL, EXPR 2 get_top() [L952] 2 return top; [L974] RET, EXPR 2 get_top() [L974] COND TRUE 2 get_top()==0 [L977] 2 return (-2); [L1010] RET, EXPR 2 pop(arr) [L1010] COND TRUE 2 !(pop(arr)!=(-2)) [L1011] CALL 2 error() [L940] 2 reach_error() VAL [arr={3:0}, flag=1, m={4:0}, top=0] - UnprovableResult [Line: 1022]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 940]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 288 locations, 6 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: 17.3s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1095 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 927 mSDsluCounter, 552 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 501 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2504 IncrementalHoareTripleChecker+Invalid, 2560 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 51 mSDtfsCounter, 2504 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=395occurred in iteration=8, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 131 ConstructedInterpolants, 0 QuantifiedInterpolants, 1343 SizeOfPredicates, 1 NumberOfNonLiveVariables, 192 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 3/9 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 RESULT: Ultimate proved your program to be incorrect! [2022-11-23 02:40:50,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bc91621-7dd5-44b7-a11d-671ba3f32aa0/bin/uautomizer-QkZJyEgLgS/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE