./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.03.cil-2.c --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_dd5f0c89-d450-47e7-9ae1-14a785ebe51c/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5f0c89-d450-47e7-9ae1-14a785ebe51c/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_dd5f0c89-d450-47e7-9ae1-14a785ebe51c/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5f0c89-d450-47e7-9ae1-14a785ebe51c/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.03.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5f0c89-d450-47e7-9ae1-14a785ebe51c/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_dd5f0c89-d450-47e7-9ae1-14a785ebe51c/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 f1e5a0d04cda68be8a659e3f7c3c8d0a5df6c0732a10757201346fc85875f569 --- 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 10:29:46,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:29:47,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:29:47,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:29:47,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:29:47,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:29:47,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:29:47,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:29:47,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:29:47,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:29:47,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:29:47,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:29:47,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:29:47,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:29:47,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:29:47,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:29:47,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:29:47,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:29:47,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:29:47,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:29:47,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:29:47,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:29:47,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:29:47,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:29:47,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:29:47,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:29:47,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:29:47,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:29:47,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:29:47,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:29:47,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:29:47,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:29:47,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:29:47,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:29:47,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:29:47,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:29:47,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:29:47,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:29:47,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:29:47,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:29:47,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:29:47,121 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5f0c89-d450-47e7-9ae1-14a785ebe51c/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:29:47,148 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:29:47,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:29:47,149 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:29:47,150 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:29:47,150 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:29:47,151 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:29:47,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:29:47,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:29:47,152 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:29:47,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:29:47,153 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:29:47,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:29:47,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:29:47,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:29:47,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:29:47,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:29:47,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:29:47,154 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:29:47,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:29:47,155 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:29:47,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:29:47,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:29:47,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:29:47,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:29:47,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:29:47,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:29:47,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:29:47,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:29:47,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:29:47,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:29:47,158 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:29:47,158 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:29:47,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:29:47,158 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_dd5f0c89-d450-47e7-9ae1-14a785ebe51c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5f0c89-d450-47e7-9ae1-14a785ebe51c/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1e5a0d04cda68be8a659e3f7c3c8d0a5df6c0732a10757201346fc85875f569 [2022-10-17 10:29:47,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:29:47,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:29:47,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:29:47,527 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:29:47,528 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:29:47,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5f0c89-d450-47e7-9ae1-14a785ebe51c/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.03.cil-2.c [2022-10-17 10:29:47,601 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5f0c89-d450-47e7-9ae1-14a785ebe51c/bin/uautomizer-J5u9QxTXDZ/data/3fd6640a3/26b5c9a6aff64bf8b976cc3629e90d8f/FLAGcc3d4319c [2022-10-17 10:29:48,837 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:29:48,838 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5f0c89-d450-47e7-9ae1-14a785ebe51c/sv-benchmarks/c/combinations/Problem05_label41+token_ring.03.cil-2.c [2022-10-17 10:29:48,901 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5f0c89-d450-47e7-9ae1-14a785ebe51c/bin/uautomizer-J5u9QxTXDZ/data/3fd6640a3/26b5c9a6aff64bf8b976cc3629e90d8f/FLAGcc3d4319c [2022-10-17 10:29:49,033 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5f0c89-d450-47e7-9ae1-14a785ebe51c/bin/uautomizer-J5u9QxTXDZ/data/3fd6640a3/26b5c9a6aff64bf8b976cc3629e90d8f [2022-10-17 10:29:49,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:29:49,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:29:49,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:29:49,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:29:49,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:29:49,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:29:49" (1/1) ... [2022-10-17 10:29:49,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f1d9d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:49, skipping insertion in model container [2022-10-17 10:29:49,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:29:49" (1/1) ... [2022-10-17 10:29:49,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:29:49,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:29:52,003 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_dd5f0c89-d450-47e7-9ae1-14a785ebe51c/sv-benchmarks/c/combinations/Problem05_label41+token_ring.03.cil-2.c[376251,376264] [2022-10-17 10:29:52,050 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_dd5f0c89-d450-47e7-9ae1-14a785ebe51c/sv-benchmarks/c/combinations/Problem05_label41+token_ring.03.cil-2.c[383339,383352] [2022-10-17 10:29:52,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:29:52,272 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:29:53,646 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_dd5f0c89-d450-47e7-9ae1-14a785ebe51c/sv-benchmarks/c/combinations/Problem05_label41+token_ring.03.cil-2.c[376251,376264] [2022-10-17 10:29:53,660 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_dd5f0c89-d450-47e7-9ae1-14a785ebe51c/sv-benchmarks/c/combinations/Problem05_label41+token_ring.03.cil-2.c[383339,383352] [2022-10-17 10:29:53,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:29:53,786 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:29:53,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:53 WrapperNode [2022-10-17 10:29:53,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:29:53,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:29:53,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:29:53,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:29:53,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:53" (1/1) ... [2022-10-17 10:29:53,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:53" (1/1) ... [2022-10-17 10:29:54,555 INFO L138 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12677 [2022-10-17 10:29:54,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:29:54,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:29:54,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:29:54,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:29:54,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:53" (1/1) ... [2022-10-17 10:29:54,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:53" (1/1) ... [2022-10-17 10:29:54,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:53" (1/1) ... [2022-10-17 10:29:54,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:53" (1/1) ... [2022-10-17 10:29:55,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:53" (1/1) ... [2022-10-17 10:29:55,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:53" (1/1) ... [2022-10-17 10:29:55,298 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:53" (1/1) ... [2022-10-17 10:29:55,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:53" (1/1) ... [2022-10-17 10:29:55,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:29:55,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:29:55,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:29:55,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:29:55,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:53" (1/1) ... [2022-10-17 10:29:55,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:29:55,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5f0c89-d450-47e7-9ae1-14a785ebe51c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:29:55,430 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5f0c89-d450-47e7-9ae1-14a785ebe51c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:29:55,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5f0c89-d450-47e7-9ae1-14a785ebe51c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:29:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:29:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-10-17 10:29:55,478 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-10-17 10:29:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-10-17 10:29:55,479 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-10-17 10:29:55,479 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-10-17 10:29:55,479 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-10-17 10:29:55,479 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-10-17 10:29:55,479 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-10-17 10:29:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-10-17 10:29:55,480 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-10-17 10:29:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-10-17 10:29:55,480 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-10-17 10:29:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:29:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:29:55,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:29:55,668 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:29:55,671 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:30:05,592 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:30:05,650 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:30:05,650 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-10-17 10:30:05,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:30:05 BoogieIcfgContainer [2022-10-17 10:30:05,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:30:05,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:30:05,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:30:05,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:30:05,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:29:49" (1/3) ... [2022-10-17 10:30:05,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bae4521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:30:05, skipping insertion in model container [2022-10-17 10:30:05,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:53" (2/3) ... [2022-10-17 10:30:05,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bae4521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:30:05, skipping insertion in model container [2022-10-17 10:30:05,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:30:05" (3/3) ... [2022-10-17 10:30:05,671 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.03.cil-2.c [2022-10-17 10:30:05,693 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:30:05,694 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:30:05,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:30:05,840 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;@57370d53, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:30:05,841 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-17 10:30:05,858 INFO L276 IsEmpty]: Start isEmpty. Operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-10-17 10:30:05,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-10-17 10:30:05,885 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:30:05,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:30:05,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:30:05,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:05,895 INFO L85 PathProgramCache]: Analyzing trace with hash 200056068, now seen corresponding path program 1 times [2022-10-17 10:30:05,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:05,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929179626] [2022-10-17 10:30:05,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:05,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:06,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:30:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:06,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-17 10:30:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:06,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:30:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:06,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-17 10:30:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:06,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-17 10:30:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:06,632 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 10:30:06,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:30:06,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929179626] [2022-10-17 10:30:06,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929179626] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:06,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:06,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:30:06,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540622173] [2022-10-17 10:30:06,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:06,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:30:06,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:30:06,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:30:06,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:30:06,708 INFO L87 Difference]: Start difference. First operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:30:08,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:30:08,348 INFO L93 Difference]: Finished difference Result 4899 states and 9012 transitions. [2022-10-17 10:30:08,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:30:08,351 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-10-17 10:30:08,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:30:08,389 INFO L225 Difference]: With dead ends: 4899 [2022-10-17 10:30:08,389 INFO L226 Difference]: Without dead ends: 2500 [2022-10-17 10:30:08,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:30:08,405 INFO L413 NwaCegarLoop]: 4287 mSDtfsCounter, 4543 mSDsluCounter, 12468 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4553 SdHoareTripleChecker+Valid, 16755 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:30:08,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4553 Valid, 16755 Invalid, 782 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-17 10:30:08,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2022-10-17 10:30:08,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 2415. [2022-10-17 10:30:08,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 2371 states have (on average 1.8291859974694222) internal successors, (4337), 2374 states have internal predecessors, (4337), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2022-10-17 10:30:08,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 4398 transitions. [2022-10-17 10:30:08,672 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 4398 transitions. Word has length 79 [2022-10-17 10:30:08,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:30:08,674 INFO L495 AbstractCegarLoop]: Abstraction has 2415 states and 4398 transitions. [2022-10-17 10:30:08,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:30:08,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 4398 transitions. [2022-10-17 10:30:08,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-10-17 10:30:08,693 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:30:08,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:30:08,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:30:08,695 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:30:08,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:08,697 INFO L85 PathProgramCache]: Analyzing trace with hash 437104264, now seen corresponding path program 1 times [2022-10-17 10:30:08,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:08,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882671154] [2022-10-17 10:30:08,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:08,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:08,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:30:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:09,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-17 10:30:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:09,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:30:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:09,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-17 10:30:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:09,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-17 10:30:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:09,157 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 10:30:09,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:30:09,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882671154] [2022-10-17 10:30:09,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882671154] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:09,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:09,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:30:09,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352666138] [2022-10-17 10:30:09,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:09,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:30:09,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:30:09,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:30:09,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:30:09,174 INFO L87 Difference]: Start difference. First operand 2415 states and 4398 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:30:10,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:30:10,762 INFO L93 Difference]: Finished difference Result 2969 states and 5244 transitions. [2022-10-17 10:30:10,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:30:10,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-10-17 10:30:10,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:30:10,793 INFO L225 Difference]: With dead ends: 2969 [2022-10-17 10:30:10,793 INFO L226 Difference]: Without dead ends: 2686 [2022-10-17 10:30:10,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:30:10,801 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 4469 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4479 SdHoareTripleChecker+Valid, 20875 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:30:10,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4479 Valid, 20875 Invalid, 1147 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-17 10:30:10,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-10-17 10:30:10,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2548. [2022-10-17 10:30:10,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2485 states have (on average 1.8132796780684104) internal successors, (4506), 2489 states have internal predecessors, (4506), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2022-10-17 10:30:10,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4593 transitions. [2022-10-17 10:30:10,925 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4593 transitions. Word has length 79 [2022-10-17 10:30:10,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:30:10,926 INFO L495 AbstractCegarLoop]: Abstraction has 2548 states and 4593 transitions. [2022-10-17 10:30:10,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:30:10,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4593 transitions. [2022-10-17 10:30:10,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-10-17 10:30:10,928 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:30:10,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:30:10,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:30:10,929 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:30:10,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:10,930 INFO L85 PathProgramCache]: Analyzing trace with hash 382711366, now seen corresponding path program 1 times [2022-10-17 10:30:10,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:10,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355114795] [2022-10-17 10:30:10,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:10,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:11,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:30:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:11,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-17 10:30:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:11,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:30:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:11,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-17 10:30:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:11,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-17 10:30:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:11,207 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 10:30:11,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:30:11,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355114795] [2022-10-17 10:30:11,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355114795] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:11,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:11,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:30:11,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841500527] [2022-10-17 10:30:11,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:11,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:30:11,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:30:11,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:30:11,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:30:11,211 INFO L87 Difference]: Start difference. First operand 2548 states and 4593 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:30:12,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:30:12,716 INFO L93 Difference]: Finished difference Result 3451 states and 5967 transitions. [2022-10-17 10:30:12,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:30:12,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-10-17 10:30:12,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:30:12,739 INFO L225 Difference]: With dead ends: 3451 [2022-10-17 10:30:12,739 INFO L226 Difference]: Without dead ends: 3035 [2022-10-17 10:30:12,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:30:12,744 INFO L413 NwaCegarLoop]: 4312 mSDtfsCounter, 4466 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4476 SdHoareTripleChecker+Valid, 20867 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:30:12,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4476 Valid, 20867 Invalid, 1152 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-17 10:30:12,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2022-10-17 10:30:13,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 2815. [2022-10-17 10:30:13,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2714 states have (on average 1.7851879145173175) internal successors, (4845), 2720 states have internal predecessors, (4845), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2022-10-17 10:30:13,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 4988 transitions. [2022-10-17 10:30:13,042 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 4988 transitions. Word has length 79 [2022-10-17 10:30:13,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:30:13,043 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 4988 transitions. [2022-10-17 10:30:13,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:30:13,043 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 4988 transitions. [2022-10-17 10:30:13,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-10-17 10:30:13,046 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:30:13,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:30:13,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:30:13,046 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:30:13,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:13,047 INFO L85 PathProgramCache]: Analyzing trace with hash -34685240, now seen corresponding path program 1 times [2022-10-17 10:30:13,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:13,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127055285] [2022-10-17 10:30:13,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:13,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:13,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:30:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:13,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-17 10:30:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:13,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:30:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:13,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-17 10:30:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:13,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-17 10:30:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:13,232 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 10:30:13,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:30:13,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127055285] [2022-10-17 10:30:13,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127055285] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:13,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:13,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:30:13,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359068191] [2022-10-17 10:30:13,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:13,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:30:13,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:30:13,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:30:13,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:30:13,239 INFO L87 Difference]: Start difference. First operand 2815 states and 4988 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)