./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741c3282-6d89-480e-8da5-09e1459ba4f9/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741c3282-6d89-480e-8da5-09e1459ba4f9/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741c3282-6d89-480e-8da5-09e1459ba4f9/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741c3282-6d89-480e-8da5-09e1459ba4f9/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741c3282-6d89-480e-8da5-09e1459ba4f9/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741c3282-6d89-480e-8da5-09e1459ba4f9/bin/uautomizer-verify-uCwYo4JHxu --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 160554c42c564a52ebd5fe8cd6d07ff66d908df6432eaaa8c30073c4760a7967 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:32:47,790 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:32:47,872 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741c3282-6d89-480e-8da5-09e1459ba4f9/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:32:47,888 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:32:47,889 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:32:47,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:32:47,934 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:32:47,935 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:32:47,936 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:32:47,938 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:32:47,939 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:32:47,939 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:32:47,940 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:32:47,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:32:47,941 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:32:47,941 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:32:47,942 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:32:47,945 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:32:47,945 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:32:47,946 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:32:47,946 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:32:47,947 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:32:47,947 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:32:47,948 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:32:47,948 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:32:47,948 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:32:47,949 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:32:47,949 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:32:47,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:32:47,950 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:32:47,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:32:47,951 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:32:47,952 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:32:47,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:32:47,952 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:32:47,953 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:32:47,953 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:32:47,953 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:32:47,954 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:32:47,954 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_741c3282-6d89-480e-8da5-09e1459ba4f9/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741c3282-6d89-480e-8da5-09e1459ba4f9/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 160554c42c564a52ebd5fe8cd6d07ff66d908df6432eaaa8c30073c4760a7967 [2023-11-19 07:32:48,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:32:48,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:32:48,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:32:48,272 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:32:48,273 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:32:48,274 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741c3282-6d89-480e-8da5-09e1459ba4f9/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-11-19 07:32:51,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:32:51,683 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:32:51,684 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741c3282-6d89-480e-8da5-09e1459ba4f9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-11-19 07:32:51,700 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741c3282-6d89-480e-8da5-09e1459ba4f9/bin/uautomizer-verify-uCwYo4JHxu/data/2f3c89a8c/2e158d014dd64402a98a2daa82eb8749/FLAG186c01132 [2023-11-19 07:32:51,716 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741c3282-6d89-480e-8da5-09e1459ba4f9/bin/uautomizer-verify-uCwYo4JHxu/data/2f3c89a8c/2e158d014dd64402a98a2daa82eb8749 [2023-11-19 07:32:51,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:32:51,721 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:32:51,723 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:32:51,723 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:32:51,729 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:32:51,730 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:32:51" (1/1) ... [2023-11-19 07:32:51,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67fb9f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:51, skipping insertion in model container [2023-11-19 07:32:51,731 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:32:51" (1/1) ... [2023-11-19 07:32:51,808 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:32:52,022 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_741c3282-6d89-480e-8da5-09e1459ba4f9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[4902,4915] [2023-11-19 07:32:52,058 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:32:52,075 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:32:52,116 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_741c3282-6d89-480e-8da5-09e1459ba4f9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[4902,4915] [2023-11-19 07:32:52,133 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:32:52,154 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:32:52,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52 WrapperNode [2023-11-19 07:32:52,155 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:32:52,157 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:32:52,157 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:32:52,157 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:32:52,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,175 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,216 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 371 [2023-11-19 07:32:52,217 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:32:52,218 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:32:52,218 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:32:52,218 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:32:52,230 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,247 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,247 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,256 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,261 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,264 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,266 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,270 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:32:52,271 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:32:52,272 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:32:52,272 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:32:52,273 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:32:52,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741c3282-6d89-480e-8da5-09e1459ba4f9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:32:52,324 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741c3282-6d89-480e-8da5-09e1459ba4f9/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:32:52,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741c3282-6d89-480e-8da5-09e1459ba4f9/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:32:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:32:52,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:32:52,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:32:52,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:32:52,619 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:32:52,621 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:32:53,179 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:32:53,196 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:32:53,197 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:32:53,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:32:53 BoogieIcfgContainer [2023-11-19 07:32:53,216 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:32:53,220 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:32:53,220 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:32:53,224 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:32:53,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:32:51" (1/3) ... [2023-11-19 07:32:53,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727fce19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:32:53, skipping insertion in model container [2023-11-19 07:32:53,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (2/3) ... [2023-11-19 07:32:53,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727fce19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:32:53, skipping insertion in model container [2023-11-19 07:32:53,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:32:53" (3/3) ... [2023-11-19 07:32:53,229 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-11-19 07:32:53,254 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:32:53,254 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:32:53,334 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:32:53,341 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;@33f73d6b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:32:53,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:32:53,355 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 79 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:53,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-19 07:32:53,365 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:32:53,366 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] [2023-11-19 07:32:53,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:32:53,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:32:53,372 INFO L85 PathProgramCache]: Analyzing trace with hash -347547403, now seen corresponding path program 1 times [2023-11-19 07:32:53,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:32:53,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905771369] [2023-11-19 07:32:53,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:32:53,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:32:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:32:53,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:32:53,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:32:53,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905771369] [2023-11-19 07:32:53,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905771369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:32:53,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:32:53,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:32:53,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320941400] [2023-11-19 07:32:53,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:32:53,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:32:53,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:32:54,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:32:54,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:32:54,037 INFO L87 Difference]: Start difference. First operand has 80 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 79 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:54,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:32:54,127 INFO L93 Difference]: Finished difference Result 180 states and 286 transitions. [2023-11-19 07:32:54,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:32:54,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-11-19 07:32:54,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:32:54,148 INFO L225 Difference]: With dead ends: 180 [2023-11-19 07:32:54,148 INFO L226 Difference]: Without dead ends: 116 [2023-11-19 07:32:54,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:32:54,156 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 91 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:32:54,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 277 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:32:54,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-19 07:32:54,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2023-11-19 07:32:54,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.4424778761061947) internal successors, (163), 113 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:54,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 163 transitions. [2023-11-19 07:32:54,229 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 163 transitions. Word has length 47 [2023-11-19 07:32:54,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:32:54,232 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 163 transitions. [2023-11-19 07:32:54,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:54,233 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 163 transitions. [2023-11-19 07:32:54,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-19 07:32:54,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:32:54,237 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] [2023-11-19 07:32:54,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:32:54,237 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:32:54,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:32:54,239 INFO L85 PathProgramCache]: Analyzing trace with hash -391185874, now seen corresponding path program 1 times [2023-11-19 07:32:54,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:32:54,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550847704] [2023-11-19 07:32:54,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:32:54,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:32:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:32:54,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:32:54,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:32:54,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550847704] [2023-11-19 07:32:54,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550847704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:32:54,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:32:54,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:32:54,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210872392] [2023-11-19 07:32:54,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:32:54,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:32:54,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:32:54,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:32:54,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:32:54,395 INFO L87 Difference]: Start difference. First operand 114 states and 163 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:54,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:32:54,421 INFO L93 Difference]: Finished difference Result 274 states and 411 transitions. [2023-11-19 07:32:54,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:32:54,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-11-19 07:32:54,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:32:54,425 INFO L225 Difference]: With dead ends: 274 [2023-11-19 07:32:54,425 INFO L226 Difference]: Without dead ends: 186 [2023-11-19 07:32:54,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:32:54,428 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 61 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:32:54,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 228 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:32:54,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-11-19 07:32:54,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2023-11-19 07:32:54,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.4808743169398908) internal successors, (271), 183 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:54,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 271 transitions. [2023-11-19 07:32:54,446 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 271 transitions. Word has length 48 [2023-11-19 07:32:54,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:32:54,447 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 271 transitions. [2023-11-19 07:32:54,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:54,447 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 271 transitions. [2023-11-19 07:32:54,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-19 07:32:54,449 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:32:54,450 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] [2023-11-19 07:32:54,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:32:54,450 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:32:54,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:32:54,451 INFO L85 PathProgramCache]: Analyzing trace with hash -2047730124, now seen corresponding path program 1 times [2023-11-19 07:32:54,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:32:54,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383263365] [2023-11-19 07:32:54,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:32:54,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:32:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:32:54,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:32:54,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:32:54,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383263365] [2023-11-19 07:32:54,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383263365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:32:54,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:32:54,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:32:54,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530679490] [2023-11-19 07:32:54,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:32:54,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:32:54,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:32:54,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:32:54,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:32:54,564 INFO L87 Difference]: Start difference. First operand 184 states and 271 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:54,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:32:54,598 INFO L93 Difference]: Finished difference Result 468 states and 709 transitions. [2023-11-19 07:32:54,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:32:54,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-11-19 07:32:54,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:32:54,602 INFO L225 Difference]: With dead ends: 468 [2023-11-19 07:32:54,602 INFO L226 Difference]: Without dead ends: 310 [2023-11-19 07:32:54,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:32:54,605 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 56 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:32:54,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 224 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:32:54,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-19 07:32:54,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 308. [2023-11-19 07:32:54,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.495114006514658) internal successors, (459), 307 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:54,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 459 transitions. [2023-11-19 07:32:54,630 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 459 transitions. Word has length 49 [2023-11-19 07:32:54,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:32:54,630 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 459 transitions. [2023-11-19 07:32:54,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:54,631 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 459 transitions. [2023-11-19 07:32:54,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 07:32:54,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:32:54,633 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] [2023-11-19 07:32:54,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:32:54,633 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:32:54,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:32:54,634 INFO L85 PathProgramCache]: Analyzing trace with hash -415311335, now seen corresponding path program 1 times [2023-11-19 07:32:54,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:32:54,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295179137] [2023-11-19 07:32:54,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:32:54,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:32:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:32:54,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:32:54,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:32:54,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295179137] [2023-11-19 07:32:54,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295179137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:32:54,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:32:54,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:32:54,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823075728] [2023-11-19 07:32:54,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:32:54,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:32:54,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:32:54,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:32:54,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:32:54,771 INFO L87 Difference]: Start difference. First operand 308 states and 459 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:54,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:32:54,805 INFO L93 Difference]: Finished difference Result 808 states and 1221 transitions. [2023-11-19 07:32:54,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:32:54,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-19 07:32:54,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:32:54,812 INFO L225 Difference]: With dead ends: 808 [2023-11-19 07:32:54,812 INFO L226 Difference]: Without dead ends: 526 [2023-11-19 07:32:54,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:32:54,818 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 51 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:32:54,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 220 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:32:54,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-11-19 07:32:54,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 524. [2023-11-19 07:32:54,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 1.4894837476099427) internal successors, (779), 523 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:54,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 779 transitions. [2023-11-19 07:32:54,848 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 779 transitions. Word has length 50 [2023-11-19 07:32:54,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:32:54,849 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 779 transitions. [2023-11-19 07:32:54,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:54,849 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 779 transitions. [2023-11-19 07:32:54,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-19 07:32:54,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:32:54,850 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] [2023-11-19 07:32:54,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:32:54,851 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:32:54,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:32:54,851 INFO L85 PathProgramCache]: Analyzing trace with hash -103942672, now seen corresponding path program 1 times [2023-11-19 07:32:54,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:32:54,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023238762] [2023-11-19 07:32:54,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:32:54,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:32:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:32:55,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:32:55,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:32:55,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023238762] [2023-11-19 07:32:55,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023238762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:32:55,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:32:55,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:32:55,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344343809] [2023-11-19 07:32:55,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:32:55,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:32:55,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:32:55,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:32:55,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:32:55,053 INFO L87 Difference]: Start difference. First operand 524 states and 779 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:55,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:32:55,268 INFO L93 Difference]: Finished difference Result 4508 states and 6803 transitions. [2023-11-19 07:32:55,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:32:55,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-19 07:32:55,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:32:55,294 INFO L225 Difference]: With dead ends: 4508 [2023-11-19 07:32:55,295 INFO L226 Difference]: Without dead ends: 4010 [2023-11-19 07:32:55,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:32:55,305 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 756 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:32:55,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 979 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:32:55,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2023-11-19 07:32:55,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 1020. [2023-11-19 07:32:55,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 1019 states have (on average 1.4867517173699705) internal successors, (1515), 1019 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:55,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1515 transitions. [2023-11-19 07:32:55,381 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1515 transitions. Word has length 51 [2023-11-19 07:32:55,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:32:55,383 INFO L495 AbstractCegarLoop]: Abstraction has 1020 states and 1515 transitions. [2023-11-19 07:32:55,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:55,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1515 transitions. [2023-11-19 07:32:55,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-19 07:32:55,391 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:32:55,391 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] [2023-11-19 07:32:55,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:32:55,392 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:32:55,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:32:55,394 INFO L85 PathProgramCache]: Analyzing trace with hash -2026482100, now seen corresponding path program 1 times [2023-11-19 07:32:55,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:32:55,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208629317] [2023-11-19 07:32:55,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:32:55,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:32:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:32:55,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:32:55,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:32:55,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208629317] [2023-11-19 07:32:55,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208629317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:32:55,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:32:55,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:32:55,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929801391] [2023-11-19 07:32:55,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:32:55,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:32:55,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:32:55,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:32:55,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:32:55,559 INFO L87 Difference]: Start difference. First operand 1020 states and 1515 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:55,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:32:55,591 INFO L93 Difference]: Finished difference Result 2506 states and 3743 transitions. [2023-11-19 07:32:55,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:32:55,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-11-19 07:32:55,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:32:55,600 INFO L225 Difference]: With dead ends: 2506 [2023-11-19 07:32:55,601 INFO L226 Difference]: Without dead ends: 1512 [2023-11-19 07:32:55,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:32:55,604 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 45 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:32:55,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 196 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:32:55,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2023-11-19 07:32:55,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1510. [2023-11-19 07:32:55,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 1509 states have (on average 1.4824387011265738) internal successors, (2237), 1509 states have internal predecessors, (2237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:55,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 2237 transitions. [2023-11-19 07:32:55,655 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 2237 transitions. Word has length 53 [2023-11-19 07:32:55,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:32:55,656 INFO L495 AbstractCegarLoop]: Abstraction has 1510 states and 2237 transitions. [2023-11-19 07:32:55,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:55,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 2237 transitions. [2023-11-19 07:32:55,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-19 07:32:55,664 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:32:55,665 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] [2023-11-19 07:32:55,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:32:55,665 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:32:55,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:32:55,666 INFO L85 PathProgramCache]: Analyzing trace with hash -2005479445, now seen corresponding path program 1 times [2023-11-19 07:32:55,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:32:55,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177222901] [2023-11-19 07:32:55,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:32:55,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:32:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:32:56,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:32:56,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:32:56,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177222901] [2023-11-19 07:32:56,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177222901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:32:56,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:32:56,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:32:56,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777791207] [2023-11-19 07:32:56,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:32:56,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:32:56,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:32:56,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:32:56,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:32:56,083 INFO L87 Difference]: Start difference. First operand 1510 states and 2237 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:56,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:32:56,218 INFO L93 Difference]: Finished difference Result 2994 states and 4447 transitions. [2023-11-19 07:32:56,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:32:56,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-11-19 07:32:56,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:32:56,228 INFO L225 Difference]: With dead ends: 2994 [2023-11-19 07:32:56,229 INFO L226 Difference]: Without dead ends: 1512 [2023-11-19 07:32:56,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:32:56,234 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 59 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:32:56,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 395 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:32:56,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2023-11-19 07:32:56,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1510. [2023-11-19 07:32:56,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 1509 states have (on average 1.4665341285619615) internal successors, (2213), 1509 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:56,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 2213 transitions. [2023-11-19 07:32:56,277 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 2213 transitions. Word has length 53 [2023-11-19 07:32:56,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:32:56,278 INFO L495 AbstractCegarLoop]: Abstraction has 1510 states and 2213 transitions. [2023-11-19 07:32:56,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:56,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 2213 transitions. [2023-11-19 07:32:56,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 07:32:56,281 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:32:56,282 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] [2023-11-19 07:32:56,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:32:56,282 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:32:56,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:32:56,283 INFO L85 PathProgramCache]: Analyzing trace with hash -2042230043, now seen corresponding path program 1 times [2023-11-19 07:32:56,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:32:56,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140172325] [2023-11-19 07:32:56,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:32:56,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:32:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:32:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:32:56,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:32:56,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140172325] [2023-11-19 07:32:56,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140172325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:32:56,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:32:56,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:32:56,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92773136] [2023-11-19 07:32:56,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:32:56,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:32:56,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:32:56,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:32:56,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:32:56,427 INFO L87 Difference]: Start difference. First operand 1510 states and 2213 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:56,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:32:56,573 INFO L93 Difference]: Finished difference Result 3986 states and 5871 transitions. [2023-11-19 07:32:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:32:56,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-19 07:32:56,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:32:56,587 INFO L225 Difference]: With dead ends: 3986 [2023-11-19 07:32:56,587 INFO L226 Difference]: Without dead ends: 2504 [2023-11-19 07:32:56,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:32:56,590 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 417 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:32:56,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 103 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:32:56,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2023-11-19 07:32:56,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 2502. [2023-11-19 07:32:56,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2501 states have (on average 1.4606157536985207) internal successors, (3653), 2501 states have internal predecessors, (3653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:56,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 3653 transitions. [2023-11-19 07:32:56,656 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 3653 transitions. Word has length 54 [2023-11-19 07:32:56,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:32:56,657 INFO L495 AbstractCegarLoop]: Abstraction has 2502 states and 3653 transitions. [2023-11-19 07:32:56,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:56,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 3653 transitions. [2023-11-19 07:32:56,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 07:32:56,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:32:56,658 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] [2023-11-19 07:32:56,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:32:56,658 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:32:56,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:32:56,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1489873546, now seen corresponding path program 1 times [2023-11-19 07:32:56,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:32:56,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532009522] [2023-11-19 07:32:56,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:32:56,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:32:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:32:56,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:32:56,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:32:56,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532009522] [2023-11-19 07:32:56,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532009522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:32:56,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:32:56,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:32:56,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638882323] [2023-11-19 07:32:56,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:32:56,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:32:56,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:32:56,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:32:56,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:32:56,750 INFO L87 Difference]: Start difference. First operand 2502 states and 3653 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:56,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:32:56,862 INFO L93 Difference]: Finished difference Result 4976 states and 7278 transitions. [2023-11-19 07:32:56,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:32:56,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-19 07:32:56,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:32:56,876 INFO L225 Difference]: With dead ends: 4976 [2023-11-19 07:32:56,877 INFO L226 Difference]: Without dead ends: 2502 [2023-11-19 07:32:56,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:32:56,881 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 253 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:32:56,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 72 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:32:56,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2023-11-19 07:32:56,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 2502. [2023-11-19 07:32:56,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2501 states have (on average 1.4446221511395443) internal successors, (3613), 2501 states have internal predecessors, (3613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:56,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 3613 transitions. [2023-11-19 07:32:56,951 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 3613 transitions. Word has length 54 [2023-11-19 07:32:56,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:32:56,952 INFO L495 AbstractCegarLoop]: Abstraction has 2502 states and 3613 transitions. [2023-11-19 07:32:56,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:56,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 3613 transitions. [2023-11-19 07:32:56,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 07:32:56,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:32:56,953 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] [2023-11-19 07:32:56,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:32:56,953 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:32:56,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:32:56,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1617958853, now seen corresponding path program 1 times [2023-11-19 07:32:56,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:32:56,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136033654] [2023-11-19 07:32:56,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:32:56,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:32:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:32:57,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:32:57,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:32:57,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136033654] [2023-11-19 07:32:57,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136033654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:32:57,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:32:57,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:32:57,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651045669] [2023-11-19 07:32:57,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:32:57,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:32:57,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:32:57,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:32:57,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:32:57,050 INFO L87 Difference]: Start difference. First operand 2502 states and 3613 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:57,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:32:57,142 INFO L93 Difference]: Finished difference Result 4976 states and 7198 transitions. [2023-11-19 07:32:57,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:32:57,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-19 07:32:57,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:32:57,156 INFO L225 Difference]: With dead ends: 4976 [2023-11-19 07:32:57,156 INFO L226 Difference]: Without dead ends: 2502 [2023-11-19 07:32:57,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:32:57,160 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 237 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:32:57,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 80 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:32:57,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2023-11-19 07:32:57,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 2502. [2023-11-19 07:32:57,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2501 states have (on average 1.4286285485805679) internal successors, (3573), 2501 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:57,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 3573 transitions. [2023-11-19 07:32:57,225 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 3573 transitions. Word has length 54 [2023-11-19 07:32:57,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:32:57,226 INFO L495 AbstractCegarLoop]: Abstraction has 2502 states and 3573 transitions. [2023-11-19 07:32:57,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:57,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 3573 transitions. [2023-11-19 07:32:57,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 07:32:57,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:32:57,227 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] [2023-11-19 07:32:57,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:32:57,227 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:32:57,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:32:57,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1811476054, now seen corresponding path program 1 times [2023-11-19 07:32:57,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:32:57,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490498105] [2023-11-19 07:32:57,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:32:57,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:32:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:32:57,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:32:57,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:32:57,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490498105] [2023-11-19 07:32:57,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490498105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:32:57,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:32:57,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:32:57,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060729861] [2023-11-19 07:32:57,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:32:57,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:32:57,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:32:57,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:32:57,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:32:57,443 INFO L87 Difference]: Start difference. First operand 2502 states and 3573 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:57,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:32:57,495 INFO L93 Difference]: Finished difference Result 3768 states and 5357 transitions. [2023-11-19 07:32:57,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:32:57,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-19 07:32:57,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:32:57,515 INFO L225 Difference]: With dead ends: 3768 [2023-11-19 07:32:57,515 INFO L226 Difference]: Without dead ends: 3766 [2023-11-19 07:32:57,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:32:57,517 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 135 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:32:57,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 453 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:32:57,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3766 states. [2023-11-19 07:32:57,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3766 to 2566. [2023-11-19 07:32:57,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2566 states, 2565 states have (on average 1.4023391812865498) internal successors, (3597), 2565 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:57,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 3597 transitions. [2023-11-19 07:32:57,591 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 3597 transitions. Word has length 54 [2023-11-19 07:32:57,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:32:57,591 INFO L495 AbstractCegarLoop]: Abstraction has 2566 states and 3597 transitions. [2023-11-19 07:32:57,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:57,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 3597 transitions. [2023-11-19 07:32:57,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 07:32:57,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:32:57,594 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:32:57,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:32:57,595 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:32:57,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:32:57,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1690284398, now seen corresponding path program 1 times [2023-11-19 07:32:57,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:32:57,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581552912] [2023-11-19 07:32:57,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:32:57,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:32:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:32:57,740 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:32:57,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:32:57,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581552912] [2023-11-19 07:32:57,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581552912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:32:57,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:32:57,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:32:57,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555217639] [2023-11-19 07:32:57,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:32:57,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:32:57,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:32:57,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:32:57,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:32:57,743 INFO L87 Difference]: Start difference. First operand 2566 states and 3597 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:57,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:32:57,879 INFO L93 Difference]: Finished difference Result 12982 states and 18225 transitions. [2023-11-19 07:32:57,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:32:57,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-19 07:32:57,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:32:57,925 INFO L225 Difference]: With dead ends: 12982 [2023-11-19 07:32:57,926 INFO L226 Difference]: Without dead ends: 10932 [2023-11-19 07:32:57,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:32:57,932 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 457 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:32:57,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 514 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:32:57,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10932 states. [2023-11-19 07:32:58,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10932 to 4862. [2023-11-19 07:32:58,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4862 states, 4861 states have (on average 1.3966262085990537) internal successors, (6789), 4861 states have internal predecessors, (6789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:58,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4862 states to 4862 states and 6789 transitions. [2023-11-19 07:32:58,153 INFO L78 Accepts]: Start accepts. Automaton has 4862 states and 6789 transitions. Word has length 76 [2023-11-19 07:32:58,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:32:58,154 INFO L495 AbstractCegarLoop]: Abstraction has 4862 states and 6789 transitions. [2023-11-19 07:32:58,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:58,155 INFO L276 IsEmpty]: Start isEmpty. Operand 4862 states and 6789 transitions. [2023-11-19 07:32:58,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 07:32:58,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:32:58,158 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:32:58,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:32:58,158 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:32:58,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:32:58,159 INFO L85 PathProgramCache]: Analyzing trace with hash -34257664, now seen corresponding path program 1 times [2023-11-19 07:32:58,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:32:58,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703389326] [2023-11-19 07:32:58,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:32:58,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:32:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:32:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:32:58,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:32:58,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703389326] [2023-11-19 07:32:58,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703389326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:32:58,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:32:58,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:32:58,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803229219] [2023-11-19 07:32:58,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:32:58,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:32:58,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:32:58,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:32:58,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:32:58,347 INFO L87 Difference]: Start difference. First operand 4862 states and 6789 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:58,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:32:58,489 INFO L93 Difference]: Finished difference Result 15518 states and 21761 transitions. [2023-11-19 07:32:58,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:32:58,490 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-19 07:32:58,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:32:58,518 INFO L225 Difference]: With dead ends: 15518 [2023-11-19 07:32:58,519 INFO L226 Difference]: Without dead ends: 12980 [2023-11-19 07:32:58,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:32:58,526 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 471 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:32:58,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 575 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:32:58,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12980 states. [2023-11-19 07:32:58,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12980 to 8390. [2023-11-19 07:32:58,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8390 states, 8389 states have (on average 1.3928954583383002) internal successors, (11685), 8389 states have internal predecessors, (11685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:58,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8390 states to 8390 states and 11685 transitions. [2023-11-19 07:32:58,808 INFO L78 Accepts]: Start accepts. Automaton has 8390 states and 11685 transitions. Word has length 76 [2023-11-19 07:32:58,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:32:58,808 INFO L495 AbstractCegarLoop]: Abstraction has 8390 states and 11685 transitions. [2023-11-19 07:32:58,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:58,809 INFO L276 IsEmpty]: Start isEmpty. Operand 8390 states and 11685 transitions. [2023-11-19 07:32:58,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 07:32:58,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:32:58,812 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:32:58,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:32:58,812 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:32:58,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:32:58,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1119688442, now seen corresponding path program 1 times [2023-11-19 07:32:58,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:32:58,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690638411] [2023-11-19 07:32:58,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:32:58,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:32:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:32:58,996 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:32:58,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:32:58,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690638411] [2023-11-19 07:32:58,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690638411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:32:58,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:32:58,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:32:58,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681608265] [2023-11-19 07:32:58,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:32:58,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:32:58,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:32:58,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:32:58,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:32:58,999 INFO L87 Difference]: Start difference. First operand 8390 states and 11685 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:59,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:32:59,149 INFO L93 Difference]: Finished difference Result 18054 states and 25289 transitions. [2023-11-19 07:32:59,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:32:59,150 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-19 07:32:59,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:32:59,183 INFO L225 Difference]: With dead ends: 18054 [2023-11-19 07:32:59,184 INFO L226 Difference]: Without dead ends: 15516 [2023-11-19 07:32:59,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:32:59,191 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 418 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:32:59,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 635 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:32:59,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15516 states. [2023-11-19 07:32:59,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15516 to 10926. [2023-11-19 07:32:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10926 states, 10925 states have (on average 1.3924942791762014) internal successors, (15213), 10925 states have internal predecessors, (15213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:59,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10926 states to 10926 states and 15213 transitions. [2023-11-19 07:32:59,462 INFO L78 Accepts]: Start accepts. Automaton has 10926 states and 15213 transitions. Word has length 76 [2023-11-19 07:32:59,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:32:59,463 INFO L495 AbstractCegarLoop]: Abstraction has 10926 states and 15213 transitions. [2023-11-19 07:32:59,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:59,463 INFO L276 IsEmpty]: Start isEmpty. Operand 10926 states and 15213 transitions. [2023-11-19 07:32:59,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 07:32:59,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:32:59,466 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:32:59,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:32:59,467 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:32:59,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:32:59,467 INFO L85 PathProgramCache]: Analyzing trace with hash 261787764, now seen corresponding path program 1 times [2023-11-19 07:32:59,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:32:59,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283388789] [2023-11-19 07:32:59,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:32:59,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:32:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:32:59,629 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:32:59,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:32:59,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283388789] [2023-11-19 07:32:59,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283388789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:32:59,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:32:59,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:32:59,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620565268] [2023-11-19 07:32:59,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:32:59,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:32:59,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:32:59,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:32:59,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:32:59,632 INFO L87 Difference]: Start difference. First operand 10926 states and 15213 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:59,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:32:59,778 INFO L93 Difference]: Finished difference Result 20590 states and 28817 transitions. [2023-11-19 07:32:59,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:32:59,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-19 07:32:59,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:32:59,815 INFO L225 Difference]: With dead ends: 20590 [2023-11-19 07:32:59,816 INFO L226 Difference]: Without dead ends: 18052 [2023-11-19 07:32:59,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:32:59,953 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 454 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:32:59,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 621 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:32:59,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18052 states. [2023-11-19 07:33:00,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18052 to 13462. [2023-11-19 07:33:00,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13462 states, 13461 states have (on average 1.3922442611990193) internal successors, (18741), 13461 states have internal predecessors, (18741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:00,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13462 states to 13462 states and 18741 transitions. [2023-11-19 07:33:00,281 INFO L78 Accepts]: Start accepts. Automaton has 13462 states and 18741 transitions. Word has length 76 [2023-11-19 07:33:00,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:00,282 INFO L495 AbstractCegarLoop]: Abstraction has 13462 states and 18741 transitions. [2023-11-19 07:33:00,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:00,282 INFO L276 IsEmpty]: Start isEmpty. Operand 13462 states and 18741 transitions. [2023-11-19 07:33:00,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-19 07:33:00,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:00,287 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:00,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:33:00,287 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:00,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:00,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2122663330, now seen corresponding path program 1 times [2023-11-19 07:33:00,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:00,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699803186] [2023-11-19 07:33:00,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:00,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:00,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:00,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699803186] [2023-11-19 07:33:00,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699803186] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:00,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877076023] [2023-11-19 07:33:00,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:00,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:00,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741c3282-6d89-480e-8da5-09e1459ba4f9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:00,883 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741c3282-6d89-480e-8da5-09e1459ba4f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:00,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741c3282-6d89-480e-8da5-09e1459ba4f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:33:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:01,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:33:01,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:01,854 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:01,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:33:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:02,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877076023] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:33:02,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:33:02,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-11-19 07:33:02,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696555785] [2023-11-19 07:33:02,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:33:02,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-19 07:33:02,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:02,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-19 07:33:02,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2023-11-19 07:33:02,863 INFO L87 Difference]: Start difference. First operand 13462 states and 18741 transitions. Second operand has 25 states, 25 states have (on average 8.36) internal successors, (209), 24 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:31,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:31,454 INFO L93 Difference]: Finished difference Result 262916 states and 355113 transitions. [2023-11-19 07:33:31,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 415 states. [2023-11-19 07:33:31,455 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.36) internal successors, (209), 24 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-19 07:33:31,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:32,369 INFO L225 Difference]: With dead ends: 262916 [2023-11-19 07:33:32,370 INFO L226 Difference]: Without dead ends: 249482 [2023-11-19 07:33:32,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 433 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85436 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=18314, Invalid=170476, Unknown=0, NotChecked=0, Total=188790 [2023-11-19 07:33:32,476 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 11183 mSDsluCounter, 3285 mSDsCounter, 0 mSdLazyCounter, 4856 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11183 SdHoareTripleChecker+Valid, 3564 SdHoareTripleChecker+Invalid, 4903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 4856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:32,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11183 Valid, 3564 Invalid, 4903 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 4856 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-19 07:33:32,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249482 states. [2023-11-19 07:33:35,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249482 to 56228. [2023-11-19 07:33:36,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56228 states, 56227 states have (on average 1.3745531506215876) internal successors, (77287), 56227 states have internal predecessors, (77287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:36,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56228 states to 56228 states and 77287 transitions. [2023-11-19 07:33:36,493 INFO L78 Accepts]: Start accepts. Automaton has 56228 states and 77287 transitions. Word has length 78 [2023-11-19 07:33:36,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:36,493 INFO L495 AbstractCegarLoop]: Abstraction has 56228 states and 77287 transitions. [2023-11-19 07:33:36,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.36) internal successors, (209), 24 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:36,494 INFO L276 IsEmpty]: Start isEmpty. Operand 56228 states and 77287 transitions. [2023-11-19 07:33:36,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-19 07:33:36,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:36,503 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:36,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741c3282-6d89-480e-8da5-09e1459ba4f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:33:36,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741c3282-6d89-480e-8da5-09e1459ba4f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 07:33:36,717 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:36,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:36,719 INFO L85 PathProgramCache]: Analyzing trace with hash 635552222, now seen corresponding path program 1 times [2023-11-19 07:33:36,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:36,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622294050] [2023-11-19 07:33:36,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:36,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:37,390 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:37,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:37,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622294050] [2023-11-19 07:33:37,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622294050] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:37,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137885105] [2023-11-19 07:33:37,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:37,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:37,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741c3282-6d89-480e-8da5-09e1459ba4f9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:37,393 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741c3282-6d89-480e-8da5-09e1459ba4f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:37,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741c3282-6d89-480e-8da5-09e1459ba4f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:33:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:37,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:33:37,555 INFO L285 TraceCheckSpWp]: Computing forward predicates...