./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/10_fmaxsym_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_786e4a24-00f6-4e94-95c2-df9cbefdf93f/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_786e4a24-00f6-4e94-95c2-df9cbefdf93f/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_786e4a24-00f6-4e94-95c2-df9cbefdf93f/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_786e4a24-00f6-4e94-95c2-df9cbefdf93f/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/10_fmaxsym_cas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_786e4a24-00f6-4e94-95c2-df9cbefdf93f/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_786e4a24-00f6-4e94-95c2-df9cbefdf93f/bin/uautomizer-J5u9QxTXDZ --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 a11d0cba01cb66911cac56797cb36d325dc008752ffb55c25c965bd0644c21c3 --- 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-dbf71c6-m [2022-10-17 11:02:43,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:02:43,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:02:43,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:02:43,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:02:43,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:02:43,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:02:43,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:02:43,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:02:43,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:02:43,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:02:43,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:02:43,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:02:43,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:02:43,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:02:43,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:02:43,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:02:43,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:02:43,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:02:43,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:02:43,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:02:43,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:02:43,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:02:43,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:02:43,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:02:43,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:02:43,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:02:43,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:02:43,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:02:43,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:02:43,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:02:43,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:02:43,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:02:43,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:02:43,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:02:43,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:02:43,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:02:43,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:02:43,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:02:43,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:02:43,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:02:43,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_786e4a24-00f6-4e94-95c2-df9cbefdf93f/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 11:02:43,840 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:02:43,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:02:43,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:02:43,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:02:43,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:02:43,843 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:02:43,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:02:43,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:02:43,848 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:02:43,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:02:43,849 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:02:43,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:02:43,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:02:43,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:02:43,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:02:43,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:02:43,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:02:43,852 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:02:43,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:02:43,853 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:02:43,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:02:43,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:02:43,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:02:43,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:02:43,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:02:43,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:02:43,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:02:43,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:02:43,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:02:43,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:02:43,857 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:02:43,857 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:02:43,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:02:43,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_786e4a24-00f6-4e94-95c2-df9cbefdf93f/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_786e4a24-00f6-4e94-95c2-df9cbefdf93f/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a11d0cba01cb66911cac56797cb36d325dc008752ffb55c25c965bd0644c21c3 [2022-10-17 11:02:44,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:02:44,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:02:44,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:02:44,185 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:02:44,186 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:02:44,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_786e4a24-00f6-4e94-95c2-df9cbefdf93f/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-ext/10_fmaxsym_cas.i [2022-10-17 11:02:44,271 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_786e4a24-00f6-4e94-95c2-df9cbefdf93f/bin/uautomizer-J5u9QxTXDZ/data/26c37dc7e/d26aa12fe7964e70b9ac0a2d2541904d/FLAG24189acc8 [2022-10-17 11:02:44,954 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:02:44,954 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_786e4a24-00f6-4e94-95c2-df9cbefdf93f/sv-benchmarks/c/pthread-ext/10_fmaxsym_cas.i [2022-10-17 11:02:44,970 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_786e4a24-00f6-4e94-95c2-df9cbefdf93f/bin/uautomizer-J5u9QxTXDZ/data/26c37dc7e/d26aa12fe7964e70b9ac0a2d2541904d/FLAG24189acc8 [2022-10-17 11:02:45,149 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_786e4a24-00f6-4e94-95c2-df9cbefdf93f/bin/uautomizer-J5u9QxTXDZ/data/26c37dc7e/d26aa12fe7964e70b9ac0a2d2541904d [2022-10-17 11:02:45,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:02:45,154 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:02:45,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:02:45,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:02:45,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:02:45,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:02:45" (1/1) ... [2022-10-17 11:02:45,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50ebd952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:45, skipping insertion in model container [2022-10-17 11:02:45,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:02:45" (1/1) ... [2022-10-17 11:02:45,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:02:45,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:02:45,768 WARN L230 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_786e4a24-00f6-4e94-95c2-df9cbefdf93f/sv-benchmarks/c/pthread-ext/10_fmaxsym_cas.i[30467,30480] [2022-10-17 11:02:45,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:02:45,801 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:02:45,882 WARN L230 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_786e4a24-00f6-4e94-95c2-df9cbefdf93f/sv-benchmarks/c/pthread-ext/10_fmaxsym_cas.i[30467,30480] [2022-10-17 11:02:45,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:02:45,937 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:02:45,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:45 WrapperNode [2022-10-17 11:02:45,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:02:45,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:02:45,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:02:45,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:02:45,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:45" (1/1) ... [2022-10-17 11:02:45,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:45" (1/1) ... [2022-10-17 11:02:45,997 INFO L138 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 96 [2022-10-17 11:02:45,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:02:45,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:02:45,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:02:45,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:02:46,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:45" (1/1) ... [2022-10-17 11:02:46,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:45" (1/1) ... [2022-10-17 11:02:46,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:45" (1/1) ... [2022-10-17 11:02:46,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:45" (1/1) ... [2022-10-17 11:02:46,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:45" (1/1) ... [2022-10-17 11:02:46,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:45" (1/1) ... [2022-10-17 11:02:46,032 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:45" (1/1) ... [2022-10-17 11:02:46,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:45" (1/1) ... [2022-10-17 11:02:46,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:02:46,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:02:46,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:02:46,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:02:46,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:45" (1/1) ... [2022-10-17 11:02:46,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:02:46,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_786e4a24-00f6-4e94-95c2-df9cbefdf93f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:46,095 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_786e4a24-00f6-4e94-95c2-df9cbefdf93f/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:46,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_786e4a24-00f6-4e94-95c2-df9cbefdf93f/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:02:46,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 11:02:46,158 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-10-17 11:02:46,158 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-10-17 11:02:46,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 11:02:46,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:02:46,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 11:02:46,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 11:02:46,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:02:46,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:02:46,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:02:46,165 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 11:02:46,360 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:02:46,362 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:02:46,656 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:02:46,727 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:02:46,727 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-17 11:02:46,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:02:46 BoogieIcfgContainer [2022-10-17 11:02:46,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:02:46,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:02:46,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:02:46,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:02:46,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:02:45" (1/3) ... [2022-10-17 11:02:46,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b2d61a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:02:46, skipping insertion in model container [2022-10-17 11:02:46,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:45" (2/3) ... [2022-10-17 11:02:46,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b2d61a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:02:46, skipping insertion in model container [2022-10-17 11:02:46,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:02:46" (3/3) ... [2022-10-17 11:02:46,743 INFO L112 eAbstractionObserver]: Analyzing ICFG 10_fmaxsym_cas.i [2022-10-17 11:02:46,754 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 11:02:46,767 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:02:46,767 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 11:02:46,767 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 11:02:46,844 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 11:02:46,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 96 transitions, 197 flow [2022-10-17 11:02:46,954 INFO L130 PetriNetUnfolder]: 10/107 cut-off events. [2022-10-17 11:02:46,954 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 11:02:46,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 107 events. 10/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 107 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2022-10-17 11:02:46,961 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 96 transitions, 197 flow [2022-10-17 11:02:46,967 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 96 transitions, 197 flow [2022-10-17 11:02:46,980 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:02:46,988 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;@65d42cd7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:02:46,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-10-17 11:02:47,010 INFO L130 PetriNetUnfolder]: 2/53 cut-off events. [2022-10-17 11:02:47,017 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 11:02:47,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:47,018 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:47,020 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:02:47,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:47,029 INFO L85 PathProgramCache]: Analyzing trace with hash -659909704, now seen corresponding path program 1 times [2022-10-17 11:02:47,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:47,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497685001] [2022-10-17 11:02:47,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:47,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:47,272 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:02:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:47,377 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:02:47,379 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 11:02:47,382 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-10-17 11:02:47,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-10-17 11:02:47,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-10-17 11:02:47,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:02:47,387 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-17 11:02:47,397 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 11:02:47,397 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-10-17 11:02:47,458 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 11:02:47,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 154 transitions, 320 flow [2022-10-17 11:02:47,531 INFO L130 PetriNetUnfolder]: 19/178 cut-off events. [2022-10-17 11:02:47,537 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 11:02:47,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 178 events. 19/178 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 338 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 127. Up to 6 conditions per place. [2022-10-17 11:02:47,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 154 transitions, 320 flow [2022-10-17 11:02:47,547 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 154 transitions, 320 flow [2022-10-17 11:02:47,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:02:47,559 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;@65d42cd7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:02:47,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-17 11:02:47,604 INFO L130 PetriNetUnfolder]: 4/85 cut-off events. [2022-10-17 11:02:47,604 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 11:02:47,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:47,605 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:47,605 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-10-17 11:02:47,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:47,607 INFO L85 PathProgramCache]: Analyzing trace with hash -2016636923, now seen corresponding path program 1 times [2022-10-17 11:02:47,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:47,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438751638] [2022-10-17 11:02:47,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:47,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:47,688 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:02:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:47,728 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:02:47,728 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 11:02:47,729 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-10-17 11:02:47,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-10-17 11:02:47,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-10-17 11:02:47,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-10-17 11:02:47,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 11:02:47,732 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-17 11:02:47,734 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 11:02:47,734 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-10-17 11:02:47,851 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 11:02:47,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 212 transitions, 445 flow [2022-10-17 11:02:47,997 INFO L130 PetriNetUnfolder]: 28/249 cut-off events. [2022-10-17 11:02:47,997 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-10-17 11:02:48,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 249 events. 28/249 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 638 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 184. Up to 8 conditions per place. [2022-10-17 11:02:48,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 212 transitions, 445 flow [2022-10-17 11:02:48,016 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 212 transitions, 445 flow [2022-10-17 11:02:48,018 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:02:48,027 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;@65d42cd7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:02:48,027 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-10-17 11:02:48,075 INFO L130 PetriNetUnfolder]: 7/122 cut-off events. [2022-10-17 11:02:48,075 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-10-17 11:02:48,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:48,076 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:48,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-10-17 11:02:48,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:48,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1094663831, now seen corresponding path program 1 times [2022-10-17 11:02:48,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:48,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802629582] [2022-10-17 11:02:48,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:48,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:48,124 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:02:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:48,176 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:02:48,177 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 11:02:48,177 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-10-17 11:02:48,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-10-17 11:02:48,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-10-17 11:02:48,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-10-17 11:02:48,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-10-17 11:02:48,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 11:02:48,179 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-17 11:02:48,180 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 11:02:48,180 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-10-17 11:02:48,248 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 11:02:48,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 270 transitions, 572 flow [2022-10-17 11:02:48,344 INFO L130 PetriNetUnfolder]: 37/320 cut-off events. [2022-10-17 11:02:48,344 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-10-17 11:02:48,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 320 events. 37/320 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 981 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 257. Up to 10 conditions per place. [2022-10-17 11:02:48,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 270 transitions, 572 flow [2022-10-17 11:02:48,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 246 places, 270 transitions, 572 flow [2022-10-17 11:02:48,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:02:48,364 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;@65d42cd7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:02:48,364 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-10-17 11:02:48,398 INFO L130 PetriNetUnfolder]: 12/184 cut-off events. [2022-10-17 11:02:48,399 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-10-17 11:02:48,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:48,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:48,400 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 11:02:48,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:48,400 INFO L85 PathProgramCache]: Analyzing trace with hash 378404689, now seen corresponding path program 1 times [2022-10-17 11:02:48,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:48,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821693156] [2022-10-17 11:02:48,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:48,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:48,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:48,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:48,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821693156] [2022-10-17 11:02:48,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821693156] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:48,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:48,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:02:48,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126967986] [2022-10-17 11:02:48,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:48,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 11:02:48,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:48,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 11:02:48,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 11:02:48,623 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 270 [2022-10-17 11:02:48,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 270 transitions, 572 flow. Second operand has 2 states, 2 states have (on average 237.0) internal successors, (474), 2 states have internal predecessors, (474), 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) [2022-10-17 11:02:48,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:48,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 270 [2022-10-17 11:02:48,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:49,064 INFO L130 PetriNetUnfolder]: 79/940 cut-off events. [2022-10-17 11:02:49,064 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2022-10-17 11:02:49,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1106 conditions, 940 events. 79/940 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5299 event pairs, 34 based on Foata normal form. 188/1042 useless extension candidates. Maximal degree in co-relation 497. Up to 65 conditions per place. [2022-10-17 11:02:49,095 INFO L137 encePairwiseOnDemand]: 248/270 looper letters, 8 selfloop transitions, 0 changer transitions 0/239 dead transitions. [2022-10-17 11:02:49,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 239 transitions, 526 flow [2022-10-17 11:02:49,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 11:02:49,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 11:02:49,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 502 transitions. [2022-10-17 11:02:49,122 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9296296296296296 [2022-10-17 11:02:49,123 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 502 transitions. [2022-10-17 11:02:49,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 502 transitions. [2022-10-17 11:02:49,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:49,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 502 transitions. [2022-10-17 11:02:49,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 251.0) internal successors, (502), 2 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) [2022-10-17 11:02:49,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 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) [2022-10-17 11:02:49,150 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 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) [2022-10-17 11:02:49,153 INFO L175 Difference]: Start difference. First operand has 246 places, 270 transitions, 572 flow. Second operand 2 states and 502 transitions. [2022-10-17 11:02:49,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 239 transitions, 526 flow [2022-10-17 11:02:49,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 239 transitions, 514 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-10-17 11:02:49,182 INFO L231 Difference]: Finished difference. Result has 237 places, 239 transitions, 498 flow [2022-10-17 11:02:49,185 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=270, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=498, PETRI_PLACES=237, PETRI_TRANSITIONS=239} [2022-10-17 11:02:49,192 INFO L287 CegarLoopForPetriNet]: 246 programPoint places, -9 predicate places. [2022-10-17 11:02:49,192 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 239 transitions, 498 flow [2022-10-17 11:02:49,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 237.0) internal successors, (474), 2 states have internal predecessors, (474), 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) [2022-10-17 11:02:49,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:49,193 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:49,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 11:02:49,194 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 11:02:49,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:49,194 INFO L85 PathProgramCache]: Analyzing trace with hash 471707768, now seen corresponding path program 1 times [2022-10-17 11:02:49,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:49,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491439610] [2022-10-17 11:02:49,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:49,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:49,256 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:02:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:49,290 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:02:49,290 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 11:02:49,290 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-10-17 11:02:49,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-10-17 11:02:49,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-10-17 11:02:49,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-10-17 11:02:49,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-10-17 11:02:49,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-10-17 11:02:49,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 11:02:49,292 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 11:02:49,293 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 11:02:49,294 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-10-17 11:02:49,397 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 11:02:49,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 328 transitions, 701 flow [2022-10-17 11:02:49,518 INFO L130 PetriNetUnfolder]: 46/391 cut-off events. [2022-10-17 11:02:49,519 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-10-17 11:02:49,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 391 events. 46/391 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1335 event pairs, 0 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 333. Up to 12 conditions per place. [2022-10-17 11:02:49,533 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 328 transitions, 701 flow [2022-10-17 11:02:49,543 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 298 places, 328 transitions, 701 flow [2022-10-17 11:02:49,544 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:02:49,546 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;@65d42cd7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:02:49,546 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-10-17 11:02:49,577 INFO L130 PetriNetUnfolder]: 13/180 cut-off events. [2022-10-17 11:02:49,578 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-10-17 11:02:49,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:49,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:49,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 11:02:49,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:49,583 INFO L85 PathProgramCache]: Analyzing trace with hash 280336786, now seen corresponding path program 1 times [2022-10-17 11:02:49,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:49,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522555330] [2022-10-17 11:02:49,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:49,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:49,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:49,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:49,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522555330] [2022-10-17 11:02:49,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522555330] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:49,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:49,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:02:49,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887461162] [2022-10-17 11:02:49,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:49,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 11:02:49,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:49,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 11:02:49,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 11:02:49,695 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 328 [2022-10-17 11:02:49,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 328 transitions, 701 flow. Second operand has 2 states, 2 states have (on average 287.0) internal successors, (574), 2 states have internal predecessors, (574), 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) [2022-10-17 11:02:49,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:49,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 328 [2022-10-17 11:02:49,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:50,559 INFO L130 PetriNetUnfolder]: 191/1940 cut-off events. [2022-10-17 11:02:50,560 INFO L131 PetriNetUnfolder]: For 511/511 co-relation queries the response was YES. [2022-10-17 11:02:50,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 1940 events. 191/1940 cut-off events. For 511/511 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 13895 event pairs, 98 based on Foata normal form. 491/2250 useless extension candidates. Maximal degree in co-relation 1101. Up to 161 conditions per place. [2022-10-17 11:02:50,704 INFO L137 encePairwiseOnDemand]: 301/328 looper letters, 10 selfloop transitions, 0 changer transitions 0/291 dead transitions. [2022-10-17 11:02:50,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 291 transitions, 647 flow [2022-10-17 11:02:50,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 11:02:50,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 11:02:50,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 609 transitions. [2022-10-17 11:02:50,708 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9283536585365854 [2022-10-17 11:02:50,708 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 609 transitions. [2022-10-17 11:02:50,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 609 transitions. [2022-10-17 11:02:50,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:50,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 609 transitions. [2022-10-17 11:02:50,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 304.5) internal successors, (609), 2 states have internal predecessors, (609), 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) [2022-10-17 11:02:50,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 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) [2022-10-17 11:02:50,717 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 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) [2022-10-17 11:02:50,717 INFO L175 Difference]: Start difference. First operand has 298 places, 328 transitions, 701 flow. Second operand 2 states and 609 transitions. [2022-10-17 11:02:50,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 291 transitions, 647 flow [2022-10-17 11:02:50,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 291 transitions, 627 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-10-17 11:02:50,730 INFO L231 Difference]: Finished difference. Result has 288 places, 291 transitions, 607 flow [2022-10-17 11:02:50,731 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=607, PETRI_PLACES=288, PETRI_TRANSITIONS=291} [2022-10-17 11:02:50,732 INFO L287 CegarLoopForPetriNet]: 298 programPoint places, -10 predicate places. [2022-10-17 11:02:50,733 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 291 transitions, 607 flow [2022-10-17 11:02:50,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 287.0) internal successors, (574), 2 states have internal predecessors, (574), 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) [2022-10-17 11:02:50,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:50,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:50,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 11:02:50,735 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 11:02:50,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:50,735 INFO L85 PathProgramCache]: Analyzing trace with hash 579959964, now seen corresponding path program 1 times [2022-10-17 11:02:50,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:50,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235263739] [2022-10-17 11:02:50,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:50,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:50,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:50,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:50,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235263739] [2022-10-17 11:02:50,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235263739] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:50,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:50,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:02:50,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923908829] [2022-10-17 11:02:50,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:50,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:02:50,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:50,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:02:50,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:02:50,945 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 328 [2022-10-17 11:02:50,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 291 transitions, 607 flow. Second operand has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 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) [2022-10-17 11:02:50,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:50,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 328 [2022-10-17 11:02:50,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand