./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b235f-7906-4155-8cc8-3a3afb3bfad4/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b235f-7906-4155-8cc8-3a3afb3bfad4/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b235f-7906-4155-8cc8-3a3afb3bfad4/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b235f-7906-4155-8cc8-3a3afb3bfad4/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b235f-7906-4155-8cc8-3a3afb3bfad4/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b235f-7906-4155-8cc8-3a3afb3bfad4/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d9dc4c1afb888b23c0ebc469c8090d62842d0a0c5570d5e56681453b5bd49afb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 13:45:11,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:45:11,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:45:11,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:45:11,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:45:11,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:45:11,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:45:11,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:45:11,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:45:11,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:45:11,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:45:11,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:45:11,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:45:11,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:45:11,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:45:11,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:45:11,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:45:11,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:45:11,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:45:11,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:45:11,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:45:11,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:45:11,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:45:11,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:45:11,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:45:11,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:45:11,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:45:11,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:45:11,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:45:11,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:45:11,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:45:11,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:45:11,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:45:11,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:45:11,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:45:11,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:45:11,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:45:11,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:45:11,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:45:11,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:45:11,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:45:11,246 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b235f-7906-4155-8cc8-3a3afb3bfad4/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 13:45:11,289 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:45:11,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:45:11,290 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:45:11,290 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:45:11,291 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:45:11,292 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:45:11,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:45:11,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:45:11,293 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:45:11,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:45:11,295 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:45:11,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:45:11,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:45:11,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:45:11,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:45:11,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:45:11,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:45:11,296 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:45:11,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:45:11,297 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:45:11,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:45:11,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:45:11,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:45:11,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:45:11,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:45:11,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:45:11,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:45:11,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:45:11,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:45:11,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:45:11,300 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:45:11,300 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:45:11,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:45:11,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b235f-7906-4155-8cc8-3a3afb3bfad4/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b235f-7906-4155-8cc8-3a3afb3bfad4/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9dc4c1afb888b23c0ebc469c8090d62842d0a0c5570d5e56681453b5bd49afb [2022-11-21 13:45:11,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:45:11,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:45:11,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:45:11,705 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:45:11,727 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:45:11,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b235f-7906-4155-8cc8-3a3afb3bfad4/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2022-11-21 13:45:14,899 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:45:15,268 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:45:15,269 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b235f-7906-4155-8cc8-3a3afb3bfad4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2022-11-21 13:45:15,289 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b235f-7906-4155-8cc8-3a3afb3bfad4/bin/uautomizer-vX5HgA9Q3a/data/669d54d03/894e46b1d9bb455d8c9aaf2c8079fcf4/FLAG9ae299949 [2022-11-21 13:45:15,311 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b235f-7906-4155-8cc8-3a3afb3bfad4/bin/uautomizer-vX5HgA9Q3a/data/669d54d03/894e46b1d9bb455d8c9aaf2c8079fcf4 [2022-11-21 13:45:15,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:45:15,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:45:15,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:45:15,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:45:15,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:45:15,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:45:15" (1/1) ... [2022-11-21 13:45:15,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@305d19a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:15, skipping insertion in model container [2022-11-21 13:45:15,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:45:15" (1/1) ... [2022-11-21 13:45:15,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:45:15,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:45:15,832 WARN L237 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_8b8b235f-7906-4155-8cc8-3a3afb3bfad4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c[15364,15377] [2022-11-21 13:45:15,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:45:16,003 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:45:16,173 WARN L237 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_8b8b235f-7906-4155-8cc8-3a3afb3bfad4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c[15364,15377] [2022-11-21 13:45:16,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:45:16,382 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:45:16,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:16 WrapperNode [2022-11-21 13:45:16,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:45:16,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:45:16,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:45:16,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:45:16,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:16" (1/1) ... [2022-11-21 13:45:16,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:16" (1/1) ... [2022-11-21 13:45:16,530 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1589 [2022-11-21 13:45:16,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:45:16,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:45:16,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:45:16,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:45:16,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:16" (1/1) ... [2022-11-21 13:45:16,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:16" (1/1) ... [2022-11-21 13:45:16,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:16" (1/1) ... [2022-11-21 13:45:16,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:16" (1/1) ... [2022-11-21 13:45:16,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:16" (1/1) ... [2022-11-21 13:45:16,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:16" (1/1) ... [2022-11-21 13:45:16,576 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:16" (1/1) ... [2022-11-21 13:45:16,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:16" (1/1) ... [2022-11-21 13:45:16,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:45:16,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:45:16,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:45:16,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:45:16,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:16" (1/1) ... [2022-11-21 13:45:16,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:45:16,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b235f-7906-4155-8cc8-3a3afb3bfad4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:45:16,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b235f-7906-4155-8cc8-3a3afb3bfad4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:45:16,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b235f-7906-4155-8cc8-3a3afb3bfad4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:45:16,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:45:16,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:45:16,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:45:16,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:45:16,962 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:45:16,965 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:45:18,454 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:45:18,471 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:45:18,471 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 13:45:18,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:45:18 BoogieIcfgContainer [2022-11-21 13:45:18,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:45:18,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:45:18,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:45:18,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:45:18,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:45:15" (1/3) ... [2022-11-21 13:45:18,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0f2dca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:45:18, skipping insertion in model container [2022-11-21 13:45:18,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:16" (2/3) ... [2022-11-21 13:45:18,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0f2dca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:45:18, skipping insertion in model container [2022-11-21 13:45:18,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:45:18" (3/3) ... [2022-11-21 13:45:18,503 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2022-11-21 13:45:18,529 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:45:18,530 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 13:45:18,692 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:45:18,708 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6592fced, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:45:18,708 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 13:45:18,722 INFO L276 IsEmpty]: Start isEmpty. Operand has 487 states, 485 states have (on average 1.6494845360824741) internal successors, (800), 486 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:18,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-21 13:45:18,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:45:18,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:18,742 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:45:18,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:18,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1982597538, now seen corresponding path program 1 times [2022-11-21 13:45:18,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:18,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120560390] [2022-11-21 13:45:18,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:18,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:19,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:45:19,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:19,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120560390] [2022-11-21 13:45:19,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120560390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:19,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:19,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 13:45:19,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163770426] [2022-11-21 13:45:19,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:19,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:45:19,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:19,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:45:19,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:45:19,492 INFO L87 Difference]: Start difference. First operand has 487 states, 485 states have (on average 1.6494845360824741) internal successors, (800), 486 states have internal predecessors, (800), 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 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:19,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:45:19,717 INFO L93 Difference]: Finished difference Result 937 states and 1520 transitions. [2022-11-21 13:45:19,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:45:19,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 119 [2022-11-21 13:45:19,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:45:19,747 INFO L225 Difference]: With dead ends: 937 [2022-11-21 13:45:19,747 INFO L226 Difference]: Without dead ends: 484 [2022-11-21 13:45:19,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:45:19,766 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 184 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:45:19,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 2155 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:45:19,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-11-21 13:45:19,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2022-11-21 13:45:19,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 483 states have (on average 1.5486542443064182) internal successors, (748), 483 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:19,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 748 transitions. [2022-11-21 13:45:19,900 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 748 transitions. Word has length 119 [2022-11-21 13:45:19,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:45:19,901 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 748 transitions. [2022-11-21 13:45:19,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:19,902 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 748 transitions. [2022-11-21 13:45:19,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-21 13:45:19,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:45:19,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:19,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:45:19,921 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:45:19,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:19,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1369129713, now seen corresponding path program 1 times [2022-11-21 13:45:19,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:19,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543262592] [2022-11-21 13:45:19,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:19,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:20,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:45:20,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:20,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543262592] [2022-11-21 13:45:20,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543262592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:20,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:20,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:45:20,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227157455] [2022-11-21 13:45:20,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:20,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:45:20,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:20,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:45:20,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:45:20,201 INFO L87 Difference]: Start difference. First operand 484 states and 748 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:20,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:45:20,343 INFO L93 Difference]: Finished difference Result 1159 states and 1827 transitions. [2022-11-21 13:45:20,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:45:20,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 159 [2022-11-21 13:45:20,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:45:20,355 INFO L225 Difference]: With dead ends: 1159 [2022-11-21 13:45:20,355 INFO L226 Difference]: Without dead ends: 746 [2022-11-21 13:45:20,361 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 [2022-11-21 13:45:20,362 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 505 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:45:20,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 1486 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:45:20,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-11-21 13:45:20,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 744. [2022-11-21 13:45:20,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 743 states have (on average 1.5625841184387619) internal successors, (1161), 743 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:20,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1161 transitions. [2022-11-21 13:45:20,469 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1161 transitions. Word has length 159 [2022-11-21 13:45:20,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:45:20,471 INFO L495 AbstractCegarLoop]: Abstraction has 744 states and 1161 transitions. [2022-11-21 13:45:20,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:20,472 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1161 transitions. [2022-11-21 13:45:20,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-21 13:45:20,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:45:20,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:20,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:45:20,488 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:45:20,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:20,491 INFO L85 PathProgramCache]: Analyzing trace with hash -319550929, now seen corresponding path program 1 times [2022-11-21 13:45:20,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:20,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388883043] [2022-11-21 13:45:20,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:20,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:20,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:45:20,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:20,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388883043] [2022-11-21 13:45:20,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388883043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:20,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:20,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:45:20,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49378308] [2022-11-21 13:45:20,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:20,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:45:20,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:20,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:45:20,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:45:20,684 INFO L87 Difference]: Start difference. First operand 744 states and 1161 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:20,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:45:20,831 INFO L93 Difference]: Finished difference Result 1863 states and 2947 transitions. [2022-11-21 13:45:20,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:45:20,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 161 [2022-11-21 13:45:20,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:45:20,838 INFO L225 Difference]: With dead ends: 1863 [2022-11-21 13:45:20,839 INFO L226 Difference]: Without dead ends: 1203 [2022-11-21 13:45:20,840 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 [2022-11-21 13:45:20,842 INFO L413 NwaCegarLoop]: 725 mSDtfsCounter, 491 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:45:20,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 1302 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:45:20,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-11-21 13:45:20,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1201. [2022-11-21 13:45:20,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1200 states have (on average 1.5708333333333333) internal successors, (1885), 1200 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:20,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1885 transitions. [2022-11-21 13:45:20,959 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1885 transitions. Word has length 161 [2022-11-21 13:45:20,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:45:20,960 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 1885 transitions. [2022-11-21 13:45:20,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:20,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1885 transitions. [2022-11-21 13:45:20,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-21 13:45:20,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:45:20,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:20,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 13:45:20,965 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:45:20,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:20,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1930829335, now seen corresponding path program 1 times [2022-11-21 13:45:20,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:20,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373150970] [2022-11-21 13:45:20,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:20,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:21,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:45:21,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:21,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373150970] [2022-11-21 13:45:21,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373150970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:21,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:21,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:45:21,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940067392] [2022-11-21 13:45:21,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:21,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:45:21,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:21,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:45:21,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:45:21,112 INFO L87 Difference]: Start difference. First operand 1201 states and 1885 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 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) [2022-11-21 13:45:21,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:45:21,336 INFO L93 Difference]: Finished difference Result 3090 states and 4890 transitions. [2022-11-21 13:45:21,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:45:21,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 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) Word has length 163 [2022-11-21 13:45:21,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:45:21,351 INFO L225 Difference]: With dead ends: 3090 [2022-11-21 13:45:21,351 INFO L226 Difference]: Without dead ends: 1986 [2022-11-21 13:45:21,356 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 [2022-11-21 13:45:21,367 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 476 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:45:21,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 1267 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:45:21,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2022-11-21 13:45:21,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1984. [2022-11-21 13:45:21,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1984 states, 1983 states have (on average 1.572869389813414) internal successors, (3119), 1983 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:21,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1984 states to 1984 states and 3119 transitions. [2022-11-21 13:45:21,643 INFO L78 Accepts]: Start accepts. Automaton has 1984 states and 3119 transitions. Word has length 163 [2022-11-21 13:45:21,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:45:21,644 INFO L495 AbstractCegarLoop]: Abstraction has 1984 states and 3119 transitions. [2022-11-21 13:45:21,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 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) [2022-11-21 13:45:21,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1984 states and 3119 transitions. [2022-11-21 13:45:21,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-21 13:45:21,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:45:21,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:21,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 13:45:21,653 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:45:21,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:21,654 INFO L85 PathProgramCache]: Analyzing trace with hash -329393929, now seen corresponding path program 1 times [2022-11-21 13:45:21,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:21,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459325339] [2022-11-21 13:45:21,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:21,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:21,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:45:21,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:21,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459325339] [2022-11-21 13:45:21,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459325339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:21,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:21,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:45:21,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36967040] [2022-11-21 13:45:21,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:21,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:45:21,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:21,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:45:21,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:45:21,818 INFO L87 Difference]: Start difference. First operand 1984 states and 3119 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:22,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:45:22,234 INFO L93 Difference]: Finished difference Result 5159 states and 8143 transitions. [2022-11-21 13:45:22,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:45:22,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 165 [2022-11-21 13:45:22,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:45:22,251 INFO L225 Difference]: With dead ends: 5159 [2022-11-21 13:45:22,252 INFO L226 Difference]: Without dead ends: 3285 [2022-11-21 13:45:22,256 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 [2022-11-21 13:45:22,257 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 460 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:45:22,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 1381 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:45:22,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3285 states. [2022-11-21 13:45:22,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3285 to 3283. [2022-11-21 13:45:22,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3283 states, 3282 states have (on average 1.568860450944546) internal successors, (5149), 3282 states have internal predecessors, (5149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:22,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3283 states to 3283 states and 5149 transitions. [2022-11-21 13:45:22,681 INFO L78 Accepts]: Start accepts. Automaton has 3283 states and 5149 transitions. Word has length 165 [2022-11-21 13:45:22,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:45:22,683 INFO L495 AbstractCegarLoop]: Abstraction has 3283 states and 5149 transitions. [2022-11-21 13:45:22,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:22,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3283 states and 5149 transitions. [2022-11-21 13:45:22,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-21 13:45:22,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:45:22,697 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:22,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 13:45:22,698 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:45:22,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:22,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1942661269, now seen corresponding path program 1 times [2022-11-21 13:45:22,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:22,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915045239] [2022-11-21 13:45:22,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:22,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:22,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:45:22,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:22,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915045239] [2022-11-21 13:45:22,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915045239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:22,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:22,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:45:22,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638620300] [2022-11-21 13:45:22,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:22,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:45:22,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:22,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:45:22,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:45:22,824 INFO L87 Difference]: Start difference. First operand 3283 states and 5149 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:23,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:45:23,457 INFO L93 Difference]: Finished difference Result 8504 states and 13344 transitions. [2022-11-21 13:45:23,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:45:23,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 167 [2022-11-21 13:45:23,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:45:23,481 INFO L225 Difference]: With dead ends: 8504 [2022-11-21 13:45:23,481 INFO L226 Difference]: Without dead ends: 5344 [2022-11-21 13:45:23,486 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 [2022-11-21 13:45:23,487 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 445 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:45:23,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 1346 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:45:23,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5344 states. [2022-11-21 13:45:24,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5344 to 5342. [2022-11-21 13:45:24,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5342 states, 5341 states have (on average 1.5583224115334207) internal successors, (8323), 5341 states have internal predecessors, (8323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:24,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5342 states to 5342 states and 8323 transitions. [2022-11-21 13:45:24,091 INFO L78 Accepts]: Start accepts. Automaton has 5342 states and 8323 transitions. Word has length 167 [2022-11-21 13:45:24,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:45:24,093 INFO L495 AbstractCegarLoop]: Abstraction has 5342 states and 8323 transitions. [2022-11-21 13:45:24,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:24,094 INFO L276 IsEmpty]: Start isEmpty. Operand 5342 states and 8323 transitions. [2022-11-21 13:45:24,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-21 13:45:24,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:45:24,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:24,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 13:45:24,115 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:45:24,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:24,116 INFO L85 PathProgramCache]: Analyzing trace with hash 667335103, now seen corresponding path program 1 times [2022-11-21 13:45:24,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:24,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197883445] [2022-11-21 13:45:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:24,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:45:24,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:24,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197883445] [2022-11-21 13:45:24,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197883445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:24,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:24,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:45:24,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540352610] [2022-11-21 13:45:24,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:24,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:45:24,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:24,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:45:24,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:45:24,565 INFO L87 Difference]: Start difference. First operand 5342 states and 8323 transitions. Second operand has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:29,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:45:29,072 INFO L93 Difference]: Finished difference Result 36365 states and 56593 transitions. [2022-11-21 13:45:29,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 13:45:29,072 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 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 169 [2022-11-21 13:45:29,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:45:29,171 INFO L225 Difference]: With dead ends: 36365 [2022-11-21 13:45:29,171 INFO L226 Difference]: Without dead ends: 31150 [2022-11-21 13:45:29,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:45:29,186 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 8353 mSDsluCounter, 6304 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8353 SdHoareTripleChecker+Valid, 7002 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:45:29,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8353 Valid, 7002 Invalid, 291 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 13:45:29,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31150 states. [2022-11-21 13:45:31,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31150 to 10625. [2022-11-21 13:45:31,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10625 states, 10624 states have (on average 1.5423569277108433) internal successors, (16386), 10624 states have internal predecessors, (16386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:31,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10625 states to 10625 states and 16386 transitions. [2022-11-21 13:45:31,433 INFO L78 Accepts]: Start accepts. Automaton has 10625 states and 16386 transitions. Word has length 169 [2022-11-21 13:45:31,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:45:31,434 INFO L495 AbstractCegarLoop]: Abstraction has 10625 states and 16386 transitions. [2022-11-21 13:45:31,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:31,434 INFO L276 IsEmpty]: Start isEmpty. Operand 10625 states and 16386 transitions. [2022-11-21 13:45:31,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-21 13:45:31,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:45:31,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:31,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 13:45:31,461 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:45:31,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:31,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1376750317, now seen corresponding path program 1 times [2022-11-21 13:45:31,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:31,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024331780] [2022-11-21 13:45:31,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:31,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:45:31,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:31,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024331780] [2022-11-21 13:45:31,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024331780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:31,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:31,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:45:31,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331615207] [2022-11-21 13:45:31,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:31,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:45:31,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:31,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:45:31,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:45:31,578 INFO L87 Difference]: Start difference. First operand 10625 states and 16386 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:34,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:45:34,691 INFO L93 Difference]: Finished difference Result 30001 states and 46188 transitions. [2022-11-21 13:45:34,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:45:34,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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 172 [2022-11-21 13:45:34,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:45:34,749 INFO L225 Difference]: With dead ends: 30001 [2022-11-21 13:45:34,750 INFO L226 Difference]: Without dead ends: 19429 [2022-11-21 13:45:34,769 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 [2022-11-21 13:45:34,771 INFO L413 NwaCegarLoop]: 995 mSDtfsCounter, 501 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:45:34,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 1594 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:45:34,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19429 states. [2022-11-21 13:45:37,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19429 to 19427. [2022-11-21 13:45:37,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19427 states, 19426 states have (on average 1.530371666838258) internal successors, (29729), 19426 states have internal predecessors, (29729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:37,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19427 states to 19427 states and 29729 transitions. [2022-11-21 13:45:37,469 INFO L78 Accepts]: Start accepts. Automaton has 19427 states and 29729 transitions. Word has length 172 [2022-11-21 13:45:37,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:45:37,469 INFO L495 AbstractCegarLoop]: Abstraction has 19427 states and 29729 transitions. [2022-11-21 13:45:37,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:37,470 INFO L276 IsEmpty]: Start isEmpty. Operand 19427 states and 29729 transitions. [2022-11-21 13:45:37,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-21 13:45:37,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:45:37,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:37,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 13:45:37,518 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:45:37,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:37,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1365392284, now seen corresponding path program 1 times [2022-11-21 13:45:37,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:37,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229694354] [2022-11-21 13:45:37,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:37,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:37,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:45:37,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:37,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229694354] [2022-11-21 13:45:37,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229694354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:37,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:37,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:45:37,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386946603] [2022-11-21 13:45:37,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:37,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:45:37,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:37,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:45:37,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:45:37,632 INFO L87 Difference]: Start difference. First operand 19427 states and 29729 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:42,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:45:42,530 INFO L93 Difference]: Finished difference Result 55497 states and 84710 transitions. [2022-11-21 13:45:42,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:45:42,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 173 [2022-11-21 13:45:42,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:45:42,655 INFO L225 Difference]: With dead ends: 55497 [2022-11-21 13:45:42,655 INFO L226 Difference]: Without dead ends: 36971 [2022-11-21 13:45:42,692 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 [2022-11-21 13:45:42,695 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 496 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:45:42,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 1317 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:45:42,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36971 states. [2022-11-21 13:45:47,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36971 to 36969. [2022-11-21 13:45:47,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36969 states, 36968 states have (on average 1.517447522181346) internal successors, (56097), 36968 states have internal predecessors, (56097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:47,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36969 states to 36969 states and 56097 transitions. [2022-11-21 13:45:47,253 INFO L78 Accepts]: Start accepts. Automaton has 36969 states and 56097 transitions. Word has length 173 [2022-11-21 13:45:47,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:45:47,254 INFO L495 AbstractCegarLoop]: Abstraction has 36969 states and 56097 transitions. [2022-11-21 13:45:47,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:47,254 INFO L276 IsEmpty]: Start isEmpty. Operand 36969 states and 56097 transitions. [2022-11-21 13:45:47,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-21 13:45:47,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:45:47,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:47,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 13:45:47,360 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:45:47,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:47,361 INFO L85 PathProgramCache]: Analyzing trace with hash 951048055, now seen corresponding path program 1 times [2022-11-21 13:45:47,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:47,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389463712] [2022-11-21 13:45:47,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:47,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:45:47,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:47,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389463712] [2022-11-21 13:45:47,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389463712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:47,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:47,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:45:47,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051585892] [2022-11-21 13:45:47,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:47,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:45:47,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:47,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:45:47,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:45:47,845 INFO L87 Difference]: Start difference. First operand 36969 states and 56097 transitions. Second operand has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 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)