./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-1.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_4fa7be2f-875f-4a4c-930c-3ba8d5406fe1/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa7be2f-875f-4a4c-930c-3ba8d5406fe1/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_4fa7be2f-875f-4a4c-930c-3ba8d5406fe1/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa7be2f-875f-4a4c-930c-3ba8d5406fe1/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa7be2f-875f-4a4c-930c-3ba8d5406fe1/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_4fa7be2f-875f-4a4c-930c-3ba8d5406fe1/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 212f1e6cc1aae5a1223162e16d5bd8071b486da78643961fa0a66e81c45b8eae --- 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 10:30:32,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:30:32,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:30:32,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:30:32,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:30:32,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:30:32,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:30:32,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:30:32,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:30:32,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:30:32,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:30:32,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:30:32,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:30:32,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:30:32,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:30:32,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:30:32,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:30:32,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:30:32,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:30:32,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:30:32,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:30:32,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:30:32,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:30:32,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:30:32,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:30:32,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:30:32,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:30:32,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:30:32,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:30:32,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:30:32,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:30:32,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:30:32,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:30:32,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:30:32,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:30:32,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:30:32,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:30:32,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:30:32,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:30:32,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:30:32,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:30:32,624 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa7be2f-875f-4a4c-930c-3ba8d5406fe1/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:30:32,665 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:30:32,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:30:32,670 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:30:32,670 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:30:32,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:30:32,672 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:30:32,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:30:32,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:30:32,673 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:30:32,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:30:32,674 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:30:32,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:30:32,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:30:32,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:30:32,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:30:32,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:30:32,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:30:32,676 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:30:32,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:30:32,676 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:30:32,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:30:32,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:30:32,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:30:32,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:30:32,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:30:32,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:30:32,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:30:32,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:30:32,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:30:32,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:30:32,679 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:30:32,679 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:30:32,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:30:32,680 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_4fa7be2f-875f-4a4c-930c-3ba8d5406fe1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa7be2f-875f-4a4c-930c-3ba8d5406fe1/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 212f1e6cc1aae5a1223162e16d5bd8071b486da78643961fa0a66e81c45b8eae [2022-10-17 10:30:32,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:30:32,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:30:32,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:30:32,960 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:30:32,961 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:30:32,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa7be2f-875f-4a4c-930c-3ba8d5406fe1/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-1.c [2022-10-17 10:30:33,033 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa7be2f-875f-4a4c-930c-3ba8d5406fe1/bin/uautomizer-J5u9QxTXDZ/data/73a12af47/534b3602f55e4840aa9cc8897b7cd861/FLAGc106960cc [2022-10-17 10:30:34,074 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:30:34,074 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa7be2f-875f-4a4c-930c-3ba8d5406fe1/sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-1.c [2022-10-17 10:30:34,126 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa7be2f-875f-4a4c-930c-3ba8d5406fe1/bin/uautomizer-J5u9QxTXDZ/data/73a12af47/534b3602f55e4840aa9cc8897b7cd861/FLAGc106960cc [2022-10-17 10:30:34,372 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa7be2f-875f-4a4c-930c-3ba8d5406fe1/bin/uautomizer-J5u9QxTXDZ/data/73a12af47/534b3602f55e4840aa9cc8897b7cd861 [2022-10-17 10:30:34,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:30:34,375 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:30:34,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:30:34,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:30:34,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:30:34,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:30:34" (1/1) ... [2022-10-17 10:30:34,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc85a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:34, skipping insertion in model container [2022-10-17 10:30:34,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:30:34" (1/1) ... [2022-10-17 10:30:34,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:30:34,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:30:37,185 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_4fa7be2f-875f-4a4c-930c-3ba8d5406fe1/sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-1.c[380593,380606] [2022-10-17 10:30:37,220 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_4fa7be2f-875f-4a4c-930c-3ba8d5406fe1/sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-1.c[383339,383352] [2022-10-17 10:30:37,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:30:37,542 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:30:38,823 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_4fa7be2f-875f-4a4c-930c-3ba8d5406fe1/sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-1.c[380593,380606] [2022-10-17 10:30:38,829 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_4fa7be2f-875f-4a4c-930c-3ba8d5406fe1/sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-1.c[383339,383352] [2022-10-17 10:30:38,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:30:38,933 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:30:38,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:38 WrapperNode [2022-10-17 10:30:38,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:30:38,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:30:38,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:30:38,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:30:38,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:38" (1/1) ... [2022-10-17 10:30:39,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:38" (1/1) ... [2022-10-17 10:30:39,496 INFO L138 Inliner]: procedures = 58, calls = 62, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 12909 [2022-10-17 10:30:39,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:30:39,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:30:39,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:30:39,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:30:39,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:38" (1/1) ... [2022-10-17 10:30:39,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:38" (1/1) ... [2022-10-17 10:30:39,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:38" (1/1) ... [2022-10-17 10:30:39,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:38" (1/1) ... [2022-10-17 10:30:40,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:38" (1/1) ... [2022-10-17 10:30:40,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:38" (1/1) ... [2022-10-17 10:30:40,130 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:38" (1/1) ... [2022-10-17 10:30:40,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:38" (1/1) ... [2022-10-17 10:30:40,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:30:40,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:30:40,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:30:40,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:30:40,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:38" (1/1) ... [2022-10-17 10:30:40,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:30:40,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa7be2f-875f-4a4c-930c-3ba8d5406fe1/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:30:40,404 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa7be2f-875f-4a4c-930c-3ba8d5406fe1/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:30:40,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa7be2f-875f-4a4c-930c-3ba8d5406fe1/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:30:40,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:30:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-10-17 10:30:40,534 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-10-17 10:30:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-10-17 10:30:40,534 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-10-17 10:30:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-10-17 10:30:40,534 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-10-17 10:30:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-10-17 10:30:40,534 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-10-17 10:30:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-10-17 10:30:40,535 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-10-17 10:30:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-10-17 10:30:40,535 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-10-17 10:30:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:30:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:30:40,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:30:40,713 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:30:40,716 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:30:48,906 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:30:48,946 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:30:48,946 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-10-17 10:30:48,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:30:48 BoogieIcfgContainer [2022-10-17 10:30:48,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:30:48,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:30:48,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:30:48,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:30:48,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:30:34" (1/3) ... [2022-10-17 10:30:48,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f3edf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:30:48, skipping insertion in model container [2022-10-17 10:30:48,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:38" (2/3) ... [2022-10-17 10:30:48,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f3edf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:30:48, skipping insertion in model container [2022-10-17 10:30:48,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:30:48" (3/3) ... [2022-10-17 10:30:48,965 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.07.cil-1.c [2022-10-17 10:30:48,984 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:30:48,984 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:30:49,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:30:49,123 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;@7a82ca0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:30:49,123 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-17 10:30:49,139 INFO L276 IsEmpty]: Start isEmpty. Operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-10-17 10:30:49,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-10-17 10:30:49,163 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:30:49,164 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:30:49,164 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:30:49,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:49,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1176565078, now seen corresponding path program 1 times [2022-10-17 10:30:49,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:49,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713852861] [2022-10-17 10:30:49,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:49,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:49,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:30:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:49,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:30:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:49,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:30:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:49,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 10:30:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:49,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-10-17 10:30:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:49,843 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 10:30:49,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:30:49,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713852861] [2022-10-17 10:30:49,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713852861] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:49,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:49,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:30:49,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754020409] [2022-10-17 10:30:49,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:49,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:30:49,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:30:49,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:30:49,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:30:49,898 INFO L87 Difference]: Start difference. First operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:30:51,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:30:51,310 INFO L93 Difference]: Finished difference Result 4955 states and 9127 transitions. [2022-10-17 10:30:51,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:30:51,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-10-17 10:30:51,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:30:51,351 INFO L225 Difference]: With dead ends: 4955 [2022-10-17 10:30:51,351 INFO L226 Difference]: Without dead ends: 2460 [2022-10-17 10:30:51,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:30:51,371 INFO L413 NwaCegarLoop]: 4453 mSDtfsCounter, 653 mSDsluCounter, 12335 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 16788 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:30:51,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 16788 Invalid, 508 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-17 10:30:51,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2022-10-17 10:30:51,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2373. [2022-10-17 10:30:51,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2344 states have (on average 1.83660409556314) internal successors, (4305), 2346 states have internal predecessors, (4305), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-10-17 10:30:51,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 4347 transitions. [2022-10-17 10:30:51,569 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 4347 transitions. Word has length 123 [2022-10-17 10:30:51,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:30:51,570 INFO L495 AbstractCegarLoop]: Abstraction has 2373 states and 4347 transitions. [2022-10-17 10:30:51,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:30:51,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 4347 transitions. [2022-10-17 10:30:51,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-10-17 10:30:51,581 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:30:51,582 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:30:51,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:30:51,582 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:30:51,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:51,583 INFO L85 PathProgramCache]: Analyzing trace with hash 796600300, now seen corresponding path program 1 times [2022-10-17 10:30:51,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:51,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540706432] [2022-10-17 10:30:51,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:51,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:51,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:30:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:51,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:30:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:51,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:30:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:51,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 10:30:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:51,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-10-17 10:30:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:51,858 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 10:30:51,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:30:51,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540706432] [2022-10-17 10:30:51,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540706432] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:51,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:51,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:30:51,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799604812] [2022-10-17 10:30:51,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:51,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:30:51,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:30:51,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:30:51,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:30:51,862 INFO L87 Difference]: Start difference. First operand 2373 states and 4347 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 10:30:54,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:30:54,195 INFO L93 Difference]: Finished difference Result 3029 states and 5394 transitions. [2022-10-17 10:30:54,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:30:54,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 123 [2022-10-17 10:30:54,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:30:54,218 INFO L225 Difference]: With dead ends: 3029 [2022-10-17 10:30:54,218 INFO L226 Difference]: Without dead ends: 2792 [2022-10-17 10:30:54,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:30:54,224 INFO L413 NwaCegarLoop]: 4416 mSDtfsCounter, 4935 mSDsluCounter, 12503 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 16919 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:30:54,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4949 Valid, 16919 Invalid, 1381 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-10-17 10:30:54,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2022-10-17 10:30:54,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2619. [2022-10-17 10:30:54,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8137904168289833) internal successors, (4656), 2570 states have internal predecessors, (4656), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2022-10-17 10:30:54,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4733 transitions. [2022-10-17 10:30:54,352 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4733 transitions. Word has length 123 [2022-10-17 10:30:54,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:30:54,354 INFO L495 AbstractCegarLoop]: Abstraction has 2619 states and 4733 transitions. [2022-10-17 10:30:54,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 10:30:54,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4733 transitions. [2022-10-17 10:30:54,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-10-17 10:30:54,359 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:30:54,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:30:54,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:30:54,360 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:30:54,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:54,361 INFO L85 PathProgramCache]: Analyzing trace with hash 71036272, now seen corresponding path program 1 times [2022-10-17 10:30:54,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:54,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989586617] [2022-10-17 10:30:54,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:54,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:54,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:30:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:54,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:30:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:54,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:30:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:54,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 10:30:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:54,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-10-17 10:30:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:54,744 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 10:30:54,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:30:54,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989586617] [2022-10-17 10:30:54,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989586617] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:54,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:54,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:30:54,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310458069] [2022-10-17 10:30:54,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:54,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:30:54,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:30:54,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:30:54,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:30:54,750 INFO L87 Difference]: Start difference. First operand 2619 states and 4733 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 10:30:57,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:30:57,440 INFO L93 Difference]: Finished difference Result 3617 states and 6323 transitions. [2022-10-17 10:30:57,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:30:57,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2022-10-17 10:30:57,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:30:57,461 INFO L225 Difference]: With dead ends: 3617 [2022-10-17 10:30:57,462 INFO L226 Difference]: Without dead ends: 3134 [2022-10-17 10:30:57,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:30:57,466 INFO L413 NwaCegarLoop]: 4607 mSDtfsCounter, 4944 mSDsluCounter, 17064 mSDsCounter, 0 mSdLazyCounter, 1997 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4958 SdHoareTripleChecker+Valid, 21671 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:30:57,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4958 Valid, 21671 Invalid, 2062 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 1997 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-10-17 10:30:57,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2022-10-17 10:30:57,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 2848. [2022-10-17 10:30:57,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2848 states, 2773 states have (on average 1.7933645870897945) internal successors, (4973), 2777 states have internal predecessors, (4973), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2022-10-17 10:30:57,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 5084 transitions. [2022-10-17 10:30:57,613 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 5084 transitions. Word has length 123 [2022-10-17 10:30:57,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:30:57,614 INFO L495 AbstractCegarLoop]: Abstraction has 2848 states and 5084 transitions. [2022-10-17 10:30:57,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 10:30:57,614 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 5084 transitions. [2022-10-17 10:30:57,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-10-17 10:30:57,616 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:30:57,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:30:57,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:30:57,617 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:30:57,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:57,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1460330286, now seen corresponding path program 1 times [2022-10-17 10:30:57,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:57,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343065893] [2022-10-17 10:30:57,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:57,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:57,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:30:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:57,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:30:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:57,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:30:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:57,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 10:30:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:57,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-10-17 10:30:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:57,829 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 10:30:57,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:30:57,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343065893] [2022-10-17 10:30:57,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343065893] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:57,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:57,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:30:57,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616780777] [2022-10-17 10:30:57,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:57,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:30:57,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:30:57,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:30:57,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:30:57,832 INFO L87 Difference]: Start difference. First operand 2848 states and 5084 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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)