./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label40+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label40+token_ring.03.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --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 2f6e67caa8159a722902bebe9d23adade07462f3fac0eb20b485945b97ba6592 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:22:03,729 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:22:03,805 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:22:03,810 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:22:03,810 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:22:03,835 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:22:03,836 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:22:03,836 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:22:03,837 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:22:03,837 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:22:03,838 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:22:03,839 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:22:03,839 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:22:03,840 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:22:03,841 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:22:03,841 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:22:03,842 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:22:03,842 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:22:03,843 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:22:03,843 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:22:03,844 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:22:03,844 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:22:03,845 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:22:03,845 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:22:03,846 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:22:03,846 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:22:03,847 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:22:03,847 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:22:03,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:22:03,848 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:22:03,849 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:22:03,849 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:22:03,850 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:22:03,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:22:03,851 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:22:03,851 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:22:03,851 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:22:03,852 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:22:03,852 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:22:03,853 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f6e67caa8159a722902bebe9d23adade07462f3fac0eb20b485945b97ba6592 [2023-11-12 02:22:04,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:22:04,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:22:04,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:22:04,114 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:22:04,114 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:22:04,115 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/combinations/Problem05_label40+token_ring.03.cil-2.c [2023-11-12 02:22:07,364 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:22:08,213 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:22:08,213 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/sv-benchmarks/c/combinations/Problem05_label40+token_ring.03.cil-2.c [2023-11-12 02:22:08,269 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/bin/uautomizer-verify-uTZkv6EMXl/data/8f387bb77/393500e186814dbea93742d070d3cd68/FLAG0a55c59a6 [2023-11-12 02:22:08,288 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/bin/uautomizer-verify-uTZkv6EMXl/data/8f387bb77/393500e186814dbea93742d070d3cd68 [2023-11-12 02:22:08,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:22:08,298 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:22:08,302 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:22:08,302 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:22:08,308 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:22:08,309 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:22:08" (1/1) ... [2023-11-12 02:22:08,310 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26430e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:08, skipping insertion in model container [2023-11-12 02:22:08,310 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:22:08" (1/1) ... [2023-11-12 02:22:08,601 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:22:10,982 WARN L240 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_36c2a64e-3118-48cd-9fa9-6f713544baae/sv-benchmarks/c/combinations/Problem05_label40+token_ring.03.cil-2.c[377069,377082] [2023-11-12 02:22:11,017 WARN L240 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_36c2a64e-3118-48cd-9fa9-6f713544baae/sv-benchmarks/c/combinations/Problem05_label40+token_ring.03.cil-2.c[383339,383352] [2023-11-12 02:22:11,226 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:22:11,242 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:22:12,588 WARN L240 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_36c2a64e-3118-48cd-9fa9-6f713544baae/sv-benchmarks/c/combinations/Problem05_label40+token_ring.03.cil-2.c[377069,377082] [2023-11-12 02:22:12,599 WARN L240 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_36c2a64e-3118-48cd-9fa9-6f713544baae/sv-benchmarks/c/combinations/Problem05_label40+token_ring.03.cil-2.c[383339,383352] [2023-11-12 02:22:12,628 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:22:12,713 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:22:12,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:12 WrapperNode [2023-11-12 02:22:12,715 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:22:12,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:22:12,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:22:12,717 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:22:12,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:12" (1/1) ... [2023-11-12 02:22:12,839 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:12" (1/1) ... [2023-11-12 02:22:13,285 INFO L138 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12688 [2023-11-12 02:22:13,286 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:22:13,287 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:22:13,287 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:22:13,287 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:22:13,298 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:12" (1/1) ... [2023-11-12 02:22:13,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:12" (1/1) ... [2023-11-12 02:22:13,348 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:12" (1/1) ... [2023-11-12 02:22:13,348 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:12" (1/1) ... [2023-11-12 02:22:13,763 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:12" (1/1) ... [2023-11-12 02:22:13,903 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:12" (1/1) ... [2023-11-12 02:22:13,969 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:12" (1/1) ... [2023-11-12 02:22:13,987 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:12" (1/1) ... [2023-11-12 02:22:14,070 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:22:14,071 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:22:14,071 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:22:14,071 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:22:14,072 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:12" (1/1) ... [2023-11-12 02:22:14,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:22:14,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:14,107 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:22:14,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:22:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:22:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-12 02:22:14,152 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-12 02:22:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-12 02:22:14,153 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-12 02:22:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-12 02:22:14,153 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-12 02:22:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-12 02:22:14,153 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-12 02:22:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-12 02:22:14,154 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-12 02:22:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-12 02:22:14,154 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-12 02:22:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:22:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:22:14,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:22:14,305 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:22:14,308 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:22:24,195 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:22:24,232 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:22:24,232 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-12 02:22:24,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:22:24 BoogieIcfgContainer [2023-11-12 02:22:24,238 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:22:24,240 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:22:24,241 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:22:24,244 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:22:24,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:22:08" (1/3) ... [2023-11-12 02:22:24,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e47b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:22:24, skipping insertion in model container [2023-11-12 02:22:24,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:12" (2/3) ... [2023-11-12 02:22:24,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e47b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:22:24, skipping insertion in model container [2023-11-12 02:22:24,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:22:24" (3/3) ... [2023-11-12 02:22:24,247 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.03.cil-2.c [2023-11-12 02:22:24,266 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:22:24,267 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 02:22:24,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:22:24,368 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=LoopHeads, 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;@7969b6b7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:22:24,369 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 02:22:24,383 INFO L276 IsEmpty]: Start isEmpty. Operand has 2344 states, 2318 states have (on average 1.8541846419327006) internal successors, (4298), 2321 states have internal predecessors, (4298), 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) [2023-11-12 02:22:24,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-12 02:22:24,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:24,399 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] [2023-11-12 02:22:24,400 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:24,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:24,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1659781244, now seen corresponding path program 1 times [2023-11-12 02:22:24,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:24,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308455018] [2023-11-12 02:22:24,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:24,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:24,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:22:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:24,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-12 02:22:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:25,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:22:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:25,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:22:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:25,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:22:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:25,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:25,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308455018] [2023-11-12 02:22:25,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308455018] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:25,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:25,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:22:25,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521937034] [2023-11-12 02:22:25,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:25,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:22:25,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:25,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:22:25,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:22:25,145 INFO L87 Difference]: Start difference. First operand has 2344 states, 2318 states have (on average 1.8541846419327006) internal successors, (4298), 2321 states have internal predecessors, (4298), 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) [2023-11-12 02:22:26,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:26,660 INFO L93 Difference]: Finished difference Result 4911 states and 9024 transitions. [2023-11-12 02:22:26,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:22:26,663 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 [2023-11-12 02:22:26,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:26,693 INFO L225 Difference]: With dead ends: 4911 [2023-11-12 02:22:26,693 INFO L226 Difference]: Without dead ends: 2508 [2023-11-12 02:22:26,702 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 [2023-11-12 02:22:26,706 INFO L413 NwaCegarLoop]: 4166 mSDtfsCounter, 4555 mSDsluCounter, 12484 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4565 SdHoareTripleChecker+Valid, 16650 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:26,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4565 Valid, 16650 Invalid, 826 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 02:22:26,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2023-11-12 02:22:26,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 2423. [2023-11-12 02:22:26,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2379 states have (on average 1.8263976460697773) internal successors, (4345), 2382 states have internal predecessors, (4345), 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) [2023-11-12 02:22:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4406 transitions. [2023-11-12 02:22:26,897 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4406 transitions. Word has length 79 [2023-11-12 02:22:26,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:26,897 INFO L495 AbstractCegarLoop]: Abstraction has 2423 states and 4406 transitions. [2023-11-12 02:22:26,898 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) [2023-11-12 02:22:26,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4406 transitions. [2023-11-12 02:22:26,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-12 02:22:26,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:26,913 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] [2023-11-12 02:22:26,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:22:26,914 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:26,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:26,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1422733048, now seen corresponding path program 1 times [2023-11-12 02:22:26,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:26,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619312246] [2023-11-12 02:22:26,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:26,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:27,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:22:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:27,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-12 02:22:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:27,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:22:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:27,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:22:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:27,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:22:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:27,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:27,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:27,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619312246] [2023-11-12 02:22:27,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619312246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:27,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:27,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:22:27,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752145355] [2023-11-12 02:22:27,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:27,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:22:27,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:27,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:22:27,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:22:27,219 INFO L87 Difference]: Start difference. First operand 2423 states and 4406 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) [2023-11-12 02:22:29,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:29,034 INFO L93 Difference]: Finished difference Result 2989 states and 5264 transitions. [2023-11-12 02:22:29,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:22:29,035 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 [2023-11-12 02:22:29,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:29,055 INFO L225 Difference]: With dead ends: 2989 [2023-11-12 02:22:29,056 INFO L226 Difference]: Without dead ends: 2698 [2023-11-12 02:22:29,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:22:29,060 INFO L413 NwaCegarLoop]: 4194 mSDtfsCounter, 4485 mSDsluCounter, 16591 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4495 SdHoareTripleChecker+Valid, 20785 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:29,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4495 Valid, 20785 Invalid, 1267 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [43 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-12 02:22:29,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2023-11-12 02:22:29,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2560. [2023-11-12 02:22:29,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2560 states, 2497 states have (on average 1.8093712454945936) internal successors, (4518), 2501 states have internal predecessors, (4518), 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) [2023-11-12 02:22:29,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2560 states to 2560 states and 4605 transitions. [2023-11-12 02:22:29,212 INFO L78 Accepts]: Start accepts. Automaton has 2560 states and 4605 transitions. Word has length 79 [2023-11-12 02:22:29,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:29,213 INFO L495 AbstractCegarLoop]: Abstraction has 2560 states and 4605 transitions. [2023-11-12 02:22:29,213 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) [2023-11-12 02:22:29,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2560 states and 4605 transitions. [2023-11-12 02:22:29,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-12 02:22:29,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:29,216 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] [2023-11-12 02:22:29,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:22:29,216 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:29,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:29,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1477125946, now seen corresponding path program 1 times [2023-11-12 02:22:29,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:29,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717823355] [2023-11-12 02:22:29,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:29,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:29,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:22:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:29,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-12 02:22:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:29,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:22:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:29,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:22:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:29,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:22:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:29,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:29,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:29,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717823355] [2023-11-12 02:22:29,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717823355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:29,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:29,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:22:29,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653087479] [2023-11-12 02:22:29,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:29,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:22:29,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:29,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:22:29,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:22:29,395 INFO L87 Difference]: Start difference. First operand 2560 states and 4605 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) [2023-11-12 02:22:31,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:31,096 INFO L93 Difference]: Finished difference Result 3483 states and 5999 transitions. [2023-11-12 02:22:31,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:22:31,097 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 [2023-11-12 02:22:31,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:31,118 INFO L225 Difference]: With dead ends: 3483 [2023-11-12 02:22:31,119 INFO L226 Difference]: Without dead ends: 3055 [2023-11-12 02:22:31,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:22:31,133 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4483 mSDsluCounter, 16591 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4493 SdHoareTripleChecker+Valid, 20783 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:31,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4493 Valid, 20783 Invalid, 1265 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-12 02:22:31,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2023-11-12 02:22:31,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 2835. [2023-11-12 02:22:31,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2734 states have (on average 1.7794440380395025) internal successors, (4865), 2740 states have internal predecessors, (4865), 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) [2023-11-12 02:22:31,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 5008 transitions. [2023-11-12 02:22:31,265 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 5008 transitions. Word has length 79 [2023-11-12 02:22:31,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:31,267 INFO L495 AbstractCegarLoop]: Abstraction has 2835 states and 5008 transitions. [2023-11-12 02:22:31,267 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) [2023-11-12 02:22:31,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 5008 transitions. [2023-11-12 02:22:31,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-12 02:22:31,271 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:31,272 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] [2023-11-12 02:22:31,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:22:31,272 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:31,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:31,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1894522552, now seen corresponding path program 1 times [2023-11-12 02:22:31,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:31,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320749421] [2023-11-12 02:22:31,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:31,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:31,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:22:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:31,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-12 02:22:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:31,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:22:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:31,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:22:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:31,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:22:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:31,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:31,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:31,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320749421] [2023-11-12 02:22:31,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320749421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:31,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:31,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:22:31,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777970293] [2023-11-12 02:22:31,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:31,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:22:31,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:31,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:22:31,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:22:31,527 INFO L87 Difference]: Start difference. First operand 2835 states and 5008 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) [2023-11-12 02:22:33,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:33,164 INFO L93 Difference]: Finished difference Result 4438 states and 7418 transitions. [2023-11-12 02:22:33,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:22:33,165 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 [2023-11-12 02:22:33,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:33,189 INFO L225 Difference]: With dead ends: 4438 [2023-11-12 02:22:33,189 INFO L226 Difference]: Without dead ends: 3735 [2023-11-12 02:22:33,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:22:33,194 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4479 mSDsluCounter, 16591 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4489 SdHoareTripleChecker+Valid, 20783 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:33,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4489 Valid, 20783 Invalid, 1256 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-12 02:22:33,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3735 states. [2023-11-12 02:22:33,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3735 to 3386. [2023-11-12 02:22:33,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3209 states have (on average 1.7323153630414458) internal successors, (5559), 3219 states have internal predecessors, (5559), 113 states have call successors, (113), 54 states have call predecessors, (113), 62 states have return successors, (148), 120 states have call predecessors, (148), 113 states have call successors, (148) [2023-11-12 02:22:33,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 5820 transitions. [2023-11-12 02:22:33,352 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 5820 transitions. Word has length 79 [2023-11-12 02:22:33,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:33,352 INFO L495 AbstractCegarLoop]: Abstraction has 3386 states and 5820 transitions. [2023-11-12 02:22:33,353 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) [2023-11-12 02:22:33,353 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 5820 transitions. [2023-11-12 02:22:33,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-12 02:22:33,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:33,355 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] [2023-11-12 02:22:33,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:22:33,356 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:33,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:33,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1215250298, now seen corresponding path program 1 times [2023-11-12 02:22:33,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:33,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110466732] [2023-11-12 02:22:33,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:33,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:33,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:22:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:33,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-12 02:22:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:33,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:22:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:33,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:22:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:33,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:22:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:33,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:33,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:33,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110466732] [2023-11-12 02:22:33,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110466732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:33,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:33,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:22:33,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511162162] [2023-11-12 02:22:33,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:33,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:22:33,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:33,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:22:33,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:22:33,503 INFO L87 Difference]: Start difference. First operand 3386 states and 5820 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) [2023-11-12 02:22:35,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:35,145 INFO L93 Difference]: Finished difference Result 6755 states and 10866 transitions. [2023-11-12 02:22:35,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:22:35,146 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 [2023-11-12 02:22:35,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:35,181 INFO L225 Difference]: With dead ends: 6755 [2023-11-12 02:22:35,181 INFO L226 Difference]: Without dead ends: 5501 [2023-11-12 02:22:35,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:22:35,188 INFO L413 NwaCegarLoop]: 4190 mSDtfsCounter, 4610 mSDsluCounter, 16583 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4624 SdHoareTripleChecker+Valid, 20773 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:35,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4624 Valid, 20773 Invalid, 1243 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-12 02:22:35,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5501 states. [2023-11-12 02:22:35,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5501 to 4469. [2023-11-12 02:22:35,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 4148 states have (on average 1.6723722275795565) internal successors, (6937), 4166 states have internal predecessors, (6937), 201 states have call successors, (201), 102 states have call predecessors, (201), 118 states have return successors, (298), 216 states have call predecessors, (298), 201 states have call successors, (298) [2023-11-12 02:22:35,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 7436 transitions. [2023-11-12 02:22:35,523 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 7436 transitions. Word has length 79 [2023-11-12 02:22:35,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:35,524 INFO L495 AbstractCegarLoop]: Abstraction has 4469 states and 7436 transitions. [2023-11-12 02:22:35,525 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) [2023-11-12 02:22:35,525 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 7436 transitions. [2023-11-12 02:22:35,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-12 02:22:35,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:35,534 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] [2023-11-12 02:22:35,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:22:35,535 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:35,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:35,536 INFO L85 PathProgramCache]: Analyzing trace with hash 746324360, now seen corresponding path program 1 times [2023-11-12 02:22:35,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:35,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824279997] [2023-11-12 02:22:35,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:35,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:35,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:22:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:35,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-12 02:22:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:35,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:22:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:35,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:22:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:35,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:22:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:35,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:35,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:35,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824279997] [2023-11-12 02:22:35,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824279997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:35,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:35,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:22:35,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166499587] [2023-11-12 02:22:35,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:35,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:22:35,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:35,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:22:35,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:22:35,765 INFO L87 Difference]: Start difference. First operand 4469 states and 7436 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) [2023-11-12 02:22:37,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:37,745 INFO L93 Difference]: Finished difference Result 10716 states and 16824 transitions. [2023-11-12 02:22:37,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:22:37,747 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 [2023-11-12 02:22:37,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:37,833 INFO L225 Difference]: With dead ends: 10716 [2023-11-12 02:22:37,833 INFO L226 Difference]: Without dead ends: 8379 [2023-11-12 02:22:37,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:22:37,856 INFO L413 NwaCegarLoop]: 4189 mSDtfsCounter, 4499 mSDsluCounter, 16580 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4508 SdHoareTripleChecker+Valid, 20769 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:37,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4508 Valid, 20769 Invalid, 1415 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-12 02:22:37,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8379 states. [2023-11-12 02:22:38,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8379 to 6544. [2023-11-12 02:22:38,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6544 states, 5943 states have (on average 1.6097930338213025) internal successors, (9567), 5977 states have internal predecessors, (9567), 369 states have call successors, (369), 198 states have call predecessors, (369), 230 states have return successors, (644), 400 states have call predecessors, (644), 369 states have call successors, (644) [2023-11-12 02:22:38,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6544 states to 6544 states and 10580 transitions. [2023-11-12 02:22:38,354 INFO L78 Accepts]: Start accepts. Automaton has 6544 states and 10580 transitions. Word has length 79 [2023-11-12 02:22:38,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:38,355 INFO L495 AbstractCegarLoop]: Abstraction has 6544 states and 10580 transitions. [2023-11-12 02:22:38,356 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) [2023-11-12 02:22:38,356 INFO L276 IsEmpty]: Start isEmpty. Operand 6544 states and 10580 transitions. [2023-11-12 02:22:38,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-12 02:22:38,363 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:38,363 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] [2023-11-12 02:22:38,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:22:38,364 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:38,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:38,364 INFO L85 PathProgramCache]: Analyzing trace with hash 948148294, now seen corresponding path program 1 times [2023-11-12 02:22:38,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:38,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245457702] [2023-11-12 02:22:38,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:38,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:38,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:22:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:38,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-12 02:22:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:38,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:22:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:38,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:22:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:38,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:22:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:38,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:38,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:38,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245457702] [2023-11-12 02:22:38,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245457702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:38,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:38,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:22:38,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109185775] [2023-11-12 02:22:38,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:38,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:22:38,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:38,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:22:38,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:22:38,541 INFO L87 Difference]: Start difference. First operand 6544 states and 10580 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) [2023-11-12 02:22:40,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:40,371 INFO L93 Difference]: Finished difference Result 17622 states and 27382 transitions. [2023-11-12 02:22:40,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:22:40,372 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 [2023-11-12 02:22:40,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:40,424 INFO L225 Difference]: With dead ends: 17622 [2023-11-12 02:22:40,425 INFO L226 Difference]: Without dead ends: 13210 [2023-11-12 02:22:40,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:22:40,441 INFO L413 NwaCegarLoop]: 4190 mSDtfsCounter, 4488 mSDsluCounter, 16583 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4502 SdHoareTripleChecker+Valid, 20773 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:40,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4502 Valid, 20773 Invalid, 1200 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [49 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-12 02:22:40,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13210 states. [2023-11-12 02:22:40,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13210 to 10788. [2023-11-12 02:22:41,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10788 states, 9643 states have (on average 1.5587472778181064) internal successors, (15031), 9709 states have internal predecessors, (15031), 689 states have call successors, (689), 390 states have call predecessors, (689), 454 states have return successors, (1482), 752 states have call predecessors, (1482), 689 states have call successors, (1482) [2023-11-12 02:22:41,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10788 states to 10788 states and 17202 transitions. [2023-11-12 02:22:41,032 INFO L78 Accepts]: Start accepts. Automaton has 10788 states and 17202 transitions. Word has length 79 [2023-11-12 02:22:41,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:41,035 INFO L495 AbstractCegarLoop]: Abstraction has 10788 states and 17202 transitions. [2023-11-12 02:22:41,036 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) [2023-11-12 02:22:41,036 INFO L276 IsEmpty]: Start isEmpty. Operand 10788 states and 17202 transitions. [2023-11-12 02:22:41,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-12 02:22:41,052 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:41,053 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] [2023-11-12 02:22:41,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:22:41,054 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:41,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:41,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1381877380, now seen corresponding path program 1 times [2023-11-12 02:22:41,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:41,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070843717] [2023-11-12 02:22:41,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:41,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:41,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:22:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:41,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-12 02:22:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:41,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:22:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:41,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:22:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:41,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:22:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:41,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:41,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070843717] [2023-11-12 02:22:41,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070843717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:41,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:41,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:22:41,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125193065] [2023-11-12 02:22:41,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:41,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:22:41,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:41,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:22:41,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:22:41,182 INFO L87 Difference]: Start difference. First operand 10788 states and 17202 transitions. 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) [2023-11-12 02:22:42,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:42,929 INFO L93 Difference]: Finished difference Result 26631 states and 41350 transitions. [2023-11-12 02:22:42,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:22:42,929 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 [2023-11-12 02:22:42,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:42,998 INFO L225 Difference]: With dead ends: 26631 [2023-11-12 02:22:42,998 INFO L226 Difference]: Without dead ends: 17976 [2023-11-12 02:22:43,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:22:43,035 INFO L413 NwaCegarLoop]: 4222 mSDtfsCounter, 4656 mSDsluCounter, 12352 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 16574 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:43,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4683 Valid, 16574 Invalid, 1080 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 02:22:43,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17976 states. [2023-11-12 02:22:43,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17976 to 15113. [2023-11-12 02:22:43,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15113 states, 13373 states have (on average 1.5226949824272789) internal successors, (20363), 13504 states have internal predecessors, (20363), 1054 states have call successors, (1054), 588 states have call predecessors, (1054), 684 states have return successors, (2091), 1084 states have call predecessors, (2091), 1054 states have call successors, (2091) [2023-11-12 02:22:43,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15113 states to 15113 states and 23508 transitions. [2023-11-12 02:22:43,840 INFO L78 Accepts]: Start accepts. Automaton has 15113 states and 23508 transitions. Word has length 79 [2023-11-12 02:22:43,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:43,840 INFO L495 AbstractCegarLoop]: Abstraction has 15113 states and 23508 transitions. [2023-11-12 02:22:43,841 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) [2023-11-12 02:22:43,841 INFO L276 IsEmpty]: Start isEmpty. Operand 15113 states and 23508 transitions. [2023-11-12 02:22:43,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-12 02:22:43,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:43,890 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:43,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:22:43,891 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:43,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:43,892 INFO L85 PathProgramCache]: Analyzing trace with hash 372870207, now seen corresponding path program 1 times [2023-11-12 02:22:43,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:43,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156647489] [2023-11-12 02:22:43,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:43,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:43,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:22:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:43,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-12 02:22:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:44,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:22:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:44,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:22:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:44,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:22:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:44,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-12 02:22:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:44,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:22:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:44,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-12 02:22:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:44,109 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-12 02:22:44,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:44,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156647489] [2023-11-12 02:22:44,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156647489] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:22:44,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042483119] [2023-11-12 02:22:44,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:44,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:44,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:44,117 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:44,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:22:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:44,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:22:44,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:44,407 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-12 02:22:44,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:44,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042483119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:44,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:22:44,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-11-12 02:22:44,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956771482] [2023-11-12 02:22:44,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:44,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:44,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:44,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:44,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:22:44,415 INFO L87 Difference]: Start difference. First operand 15113 states and 23508 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-12 02:22:45,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:45,583 INFO L93 Difference]: Finished difference Result 40726 states and 62424 transitions. [2023-11-12 02:22:45,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:45,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 129 [2023-11-12 02:22:45,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:45,690 INFO L225 Difference]: With dead ends: 40726 [2023-11-12 02:22:45,691 INFO L226 Difference]: Without dead ends: 27746 [2023-11-12 02:22:45,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:22:45,745 INFO L413 NwaCegarLoop]: 4184 mSDtfsCounter, 4140 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4140 SdHoareTripleChecker+Valid, 4386 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:45,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4140 Valid, 4386 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:22:45,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27746 states. [2023-11-12 02:22:47,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27746 to 27548. [2023-11-12 02:22:47,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27548 states, 24124 states have (on average 1.4909633559940307) internal successors, (35968), 24384 states have internal predecessors, (35968), 2054 states have call successors, (2054), 1176 states have call predecessors, (2054), 1368 states have return successors, (4065), 2051 states have call predecessors, (4065), 2054 states have call successors, (4065) [2023-11-12 02:22:47,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27548 states to 27548 states and 42087 transitions. [2023-11-12 02:22:47,614 INFO L78 Accepts]: Start accepts. Automaton has 27548 states and 42087 transitions. Word has length 129 [2023-11-12 02:22:47,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:47,614 INFO L495 AbstractCegarLoop]: Abstraction has 27548 states and 42087 transitions. [2023-11-12 02:22:47,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-12 02:22:47,615 INFO L276 IsEmpty]: Start isEmpty. Operand 27548 states and 42087 transitions. [2023-11-12 02:22:47,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-12 02:22:47,692 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:47,694 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:47,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:47,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:47,901 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:47,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:47,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1742173535, now seen corresponding path program 1 times [2023-11-12 02:22:47,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:47,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523613476] [2023-11-12 02:22:47,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:47,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:47,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:22:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:47,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-12 02:22:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:48,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:22:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:48,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:22:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:48,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:22:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:48,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-12 02:22:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:48,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:22:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:48,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-12 02:22:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:48,070 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-12 02:22:48,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:48,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523613476] [2023-11-12 02:22:48,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523613476] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:22:48,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168167735] [2023-11-12 02:22:48,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:48,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:48,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:48,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:48,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36c2a64e-3118-48cd-9fa9-6f713544baae/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process