./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e8b8c7-f3a7-42d6-a34e-f0320c7c2cc9/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e8b8c7-f3a7-42d6-a34e-f0320c7c2cc9/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e8b8c7-f3a7-42d6-a34e-f0320c7c2cc9/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e8b8c7-f3a7-42d6-a34e-f0320c7c2cc9/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e8b8c7-f3a7-42d6-a34e-f0320c7c2cc9/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e8b8c7-f3a7-42d6-a34e-f0320c7c2cc9/bin/uautomizer-IVEQpCNsaX --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 bf9b303f0455860ff73b360d674f9b56750c61e03c2589dbf0115b0e5bdacb76 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:58:35,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:58:35,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:58:35,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:58:35,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:58:35,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:58:35,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:58:35,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:58:35,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:58:35,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:58:35,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:58:35,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:58:35,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:58:35,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:58:35,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:58:35,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:58:35,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:58:35,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:58:35,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:58:35,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:58:35,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:58:35,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:58:35,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:58:35,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:58:35,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:58:35,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:58:35,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:58:35,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:58:35,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:58:35,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:58:35,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:58:35,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:58:35,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:58:35,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:58:35,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:58:35,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:58:35,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:58:35,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:58:35,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:58:35,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:58:35,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:58:35,211 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e8b8c7-f3a7-42d6-a34e-f0320c7c2cc9/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 08:58:35,257 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:58:35,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:58:35,258 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:58:35,258 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:58:35,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:58:35,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:58:35,260 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:58:35,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:58:35,261 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:58:35,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:58:35,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:58:35,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:58:35,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:58:35,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:58:35,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:58:35,263 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:58:35,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:58:35,264 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:58:35,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:58:35,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:58:35,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:58:35,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:58:35,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:58:35,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:58:35,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:58:35,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:58:35,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:58:35,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:58:35,266 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:58:35,268 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:58:35,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:58:35,269 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:58:35,269 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_b2e8b8c7-f3a7-42d6-a34e-f0320c7c2cc9/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e8b8c7-f3a7-42d6-a34e-f0320c7c2cc9/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf9b303f0455860ff73b360d674f9b56750c61e03c2589dbf0115b0e5bdacb76 [2021-11-09 08:58:35,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:58:35,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:58:35,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:58:35,574 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:58:35,575 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:58:35,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e8b8c7-f3a7-42d6-a34e-f0320c7c2cc9/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2021-11-09 08:58:35,666 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e8b8c7-f3a7-42d6-a34e-f0320c7c2cc9/bin/uautomizer-IVEQpCNsaX/data/e914d6240/95ccf8ad9591441e9a7e1b80997fdaf5/FLAG495b44f82 [2021-11-09 08:58:36,285 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:58:36,286 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e8b8c7-f3a7-42d6-a34e-f0320c7c2cc9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2021-11-09 08:58:36,318 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e8b8c7-f3a7-42d6-a34e-f0320c7c2cc9/bin/uautomizer-IVEQpCNsaX/data/e914d6240/95ccf8ad9591441e9a7e1b80997fdaf5/FLAG495b44f82 [2021-11-09 08:58:36,545 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e8b8c7-f3a7-42d6-a34e-f0320c7c2cc9/bin/uautomizer-IVEQpCNsaX/data/e914d6240/95ccf8ad9591441e9a7e1b80997fdaf5 [2021-11-09 08:58:36,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:58:36,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:58:36,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:58:36,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:58:36,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:58:36,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:58:36" (1/1) ... [2021-11-09 08:58:36,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da637b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:36, skipping insertion in model container [2021-11-09 08:58:36,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:58:36" (1/1) ... [2021-11-09 08:58:36,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:58:36,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:58:36,990 WARN L228 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_b2e8b8c7-f3a7-42d6-a34e-f0320c7c2cc9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c[11904,11917] [2021-11-09 08:58:37,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:58:37,065 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:58:37,240 WARN L228 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_b2e8b8c7-f3a7-42d6-a34e-f0320c7c2cc9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c[11904,11917] [2021-11-09 08:58:37,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:58:37,306 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:58:37,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:37 WrapperNode [2021-11-09 08:58:37,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:58:37,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:58:37,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:58:37,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:58:37,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:37" (1/1) ... [2021-11-09 08:58:37,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:37" (1/1) ... [2021-11-09 08:58:37,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:58:37,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:58:37,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:58:37,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:58:37,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:37" (1/1) ... [2021-11-09 08:58:37,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:37" (1/1) ... [2021-11-09 08:58:37,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:37" (1/1) ... [2021-11-09 08:58:37,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:37" (1/1) ... [2021-11-09 08:58:37,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:37" (1/1) ... [2021-11-09 08:58:37,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:37" (1/1) ... [2021-11-09 08:58:37,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:37" (1/1) ... [2021-11-09 08:58:37,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:58:37,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:58:37,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:58:37,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:58:37,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:37" (1/1) ... [2021-11-09 08:58:37,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:58:37,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e8b8c7-f3a7-42d6-a34e-f0320c7c2cc9/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:58:37,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e8b8c7-f3a7-42d6-a34e-f0320c7c2cc9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:58:37,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e8b8c7-f3a7-42d6-a34e-f0320c7c2cc9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:58:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:58:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:58:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:58:37,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:58:38,775 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:58:38,782 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-09 08:58:38,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:58:38 BoogieIcfgContainer [2021-11-09 08:58:38,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:58:38,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:58:38,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:58:38,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:58:38,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:58:36" (1/3) ... [2021-11-09 08:58:38,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b31387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:58:38, skipping insertion in model container [2021-11-09 08:58:38,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:37" (2/3) ... [2021-11-09 08:58:38,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b31387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:58:38, skipping insertion in model container [2021-11-09 08:58:38,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:58:38" (3/3) ... [2021-11-09 08:58:38,799 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2021-11-09 08:58:38,811 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:58:38,811 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 08:58:38,864 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:58:38,871 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 08:58:38,871 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 08:58:38,895 INFO L276 IsEmpty]: Start isEmpty. Operand has 254 states, 252 states have (on average 1.6785714285714286) internal successors, (423), 253 states have internal predecessors, (423), 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) [2021-11-09 08:58:38,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-09 08:58:38,908 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:38,908 INFO L513 BasicCegarLoop]: 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] [2021-11-09 08:58:38,909 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:38,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:38,914 INFO L85 PathProgramCache]: Analyzing trace with hash 526717400, now seen corresponding path program 1 times [2021-11-09 08:58:38,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:38,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035209794] [2021-11-09 08:58:38,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:38,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:39,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:39,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:39,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035209794] [2021-11-09 08:58:39,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035209794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:39,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:39,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:58:39,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954966288] [2021-11-09 08:58:39,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:58:39,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:39,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:58:39,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:58:39,357 INFO L87 Difference]: Start difference. First operand has 254 states, 252 states have (on average 1.6785714285714286) internal successors, (423), 253 states have internal predecessors, (423), 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 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2021-11-09 08:58:39,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:39,591 INFO L93 Difference]: Finished difference Result 472 states and 768 transitions. [2021-11-09 08:58:39,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:58:39,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 91 [2021-11-09 08:58:39,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:39,618 INFO L225 Difference]: With dead ends: 472 [2021-11-09 08:58:39,619 INFO L226 Difference]: Without dead ends: 251 [2021-11-09 08:58:39,625 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:58:39,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-09 08:58:39,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2021-11-09 08:58:39,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.496) internal successors, (374), 250 states have internal predecessors, (374), 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) [2021-11-09 08:58:39,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 374 transitions. [2021-11-09 08:58:39,719 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 374 transitions. Word has length 91 [2021-11-09 08:58:39,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:39,720 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 374 transitions. [2021-11-09 08:58:39,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2021-11-09 08:58:39,721 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 374 transitions. [2021-11-09 08:58:39,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-09 08:58:39,729 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:39,730 INFO L513 BasicCegarLoop]: 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] [2021-11-09 08:58:39,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:58:39,730 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:39,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:39,731 INFO L85 PathProgramCache]: Analyzing trace with hash 2028572103, now seen corresponding path program 1 times [2021-11-09 08:58:39,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:39,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822003247] [2021-11-09 08:58:39,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:39,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:39,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:39,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822003247] [2021-11-09 08:58:39,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822003247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:39,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:39,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:58:39,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258899951] [2021-11-09 08:58:39,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:58:39,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:39,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:58:39,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:58:39,969 INFO L87 Difference]: Start difference. First operand 251 states and 374 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2021-11-09 08:58:40,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:40,031 INFO L93 Difference]: Finished difference Result 569 states and 880 transitions. [2021-11-09 08:58:40,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:58:40,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 130 [2021-11-09 08:58:40,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:40,036 INFO L225 Difference]: With dead ends: 569 [2021-11-09 08:58:40,036 INFO L226 Difference]: Without dead ends: 368 [2021-11-09 08:58:40,042 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:58:40,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-11-09 08:58:40,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 366. [2021-11-09 08:58:40,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 365 states have (on average 1.5232876712328767) internal successors, (556), 365 states have internal predecessors, (556), 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) [2021-11-09 08:58:40,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 556 transitions. [2021-11-09 08:58:40,085 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 556 transitions. Word has length 130 [2021-11-09 08:58:40,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:40,088 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 556 transitions. [2021-11-09 08:58:40,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2021-11-09 08:58:40,088 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 556 transitions. [2021-11-09 08:58:40,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-09 08:58:40,102 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:40,103 INFO L513 BasicCegarLoop]: 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] [2021-11-09 08:58:40,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:58:40,104 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:40,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:40,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1858506137, now seen corresponding path program 1 times [2021-11-09 08:58:40,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:40,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108714751] [2021-11-09 08:58:40,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:40,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:40,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:40,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108714751] [2021-11-09 08:58:40,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108714751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:40,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:40,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:58:40,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882937062] [2021-11-09 08:58:40,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:58:40,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:40,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:58:40,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:58:40,287 INFO L87 Difference]: Start difference. First operand 366 states and 556 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2021-11-09 08:58:40,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:40,360 INFO L93 Difference]: Finished difference Result 884 states and 1381 transitions. [2021-11-09 08:58:40,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:58:40,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 132 [2021-11-09 08:58:40,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:40,366 INFO L225 Difference]: With dead ends: 884 [2021-11-09 08:58:40,366 INFO L226 Difference]: Without dead ends: 574 [2021-11-09 08:58:40,368 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:58:40,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-11-09 08:58:40,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 572. [2021-11-09 08:58:40,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 1.5446584938704029) internal successors, (882), 571 states have internal predecessors, (882), 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) [2021-11-09 08:58:40,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 882 transitions. [2021-11-09 08:58:40,422 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 882 transitions. Word has length 132 [2021-11-09 08:58:40,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:40,423 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 882 transitions. [2021-11-09 08:58:40,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2021-11-09 08:58:40,423 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 882 transitions. [2021-11-09 08:58:40,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-09 08:58:40,426 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:40,426 INFO L513 BasicCegarLoop]: 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] [2021-11-09 08:58:40,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 08:58:40,426 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:40,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:40,427 INFO L85 PathProgramCache]: Analyzing trace with hash -84400586, now seen corresponding path program 1 times [2021-11-09 08:58:40,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:40,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164323248] [2021-11-09 08:58:40,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:40,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:40,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:40,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164323248] [2021-11-09 08:58:40,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164323248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:40,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:40,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:58:40,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183886964] [2021-11-09 08:58:40,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:58:40,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:40,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:58:40,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:58:40,535 INFO L87 Difference]: Start difference. First operand 572 states and 882 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-11-09 08:58:40,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:40,616 INFO L93 Difference]: Finished difference Result 1444 states and 2269 transitions. [2021-11-09 08:58:40,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:58:40,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 134 [2021-11-09 08:58:40,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:40,627 INFO L225 Difference]: With dead ends: 1444 [2021-11-09 08:58:40,628 INFO L226 Difference]: Without dead ends: 934 [2021-11-09 08:58:40,630 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:58:40,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-11-09 08:58:40,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 932. [2021-11-09 08:58:40,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 931 states have (on average 1.5574650912996777) internal successors, (1450), 931 states have internal predecessors, (1450), 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) [2021-11-09 08:58:40,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1450 transitions. [2021-11-09 08:58:40,687 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1450 transitions. Word has length 134 [2021-11-09 08:58:40,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:40,689 INFO L470 AbstractCegarLoop]: Abstraction has 932 states and 1450 transitions. [2021-11-09 08:58:40,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-11-09 08:58:40,712 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1450 transitions. [2021-11-09 08:58:40,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-09 08:58:40,715 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:40,715 INFO L513 BasicCegarLoop]: 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] [2021-11-09 08:58:40,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 08:58:40,716 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:40,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:40,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2009321658, now seen corresponding path program 1 times [2021-11-09 08:58:40,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:40,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879488013] [2021-11-09 08:58:40,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:40,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:40,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:40,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:40,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879488013] [2021-11-09 08:58:40,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879488013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:40,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:40,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:58:40,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739541341] [2021-11-09 08:58:40,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:58:40,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:40,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:58:40,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:58:40,849 INFO L87 Difference]: Start difference. First operand 932 states and 1450 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2021-11-09 08:58:40,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:40,956 INFO L93 Difference]: Finished difference Result 2410 states and 3793 transitions. [2021-11-09 08:58:40,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:58:40,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 136 [2021-11-09 08:58:40,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:40,967 INFO L225 Difference]: With dead ends: 2410 [2021-11-09 08:58:40,968 INFO L226 Difference]: Without dead ends: 1546 [2021-11-09 08:58:40,970 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:58:40,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2021-11-09 08:58:41,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1544. [2021-11-09 08:58:41,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1543 states have (on average 1.561892417368762) internal successors, (2410), 1543 states have internal predecessors, (2410), 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) [2021-11-09 08:58:41,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2410 transitions. [2021-11-09 08:58:41,082 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2410 transitions. Word has length 136 [2021-11-09 08:58:41,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:41,082 INFO L470 AbstractCegarLoop]: Abstraction has 1544 states and 2410 transitions. [2021-11-09 08:58:41,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2021-11-09 08:58:41,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2410 transitions. [2021-11-09 08:58:41,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-09 08:58:41,090 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:41,090 INFO L513 BasicCegarLoop]: 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] [2021-11-09 08:58:41,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 08:58:41,091 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:41,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:41,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1215616482, now seen corresponding path program 1 times [2021-11-09 08:58:41,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:41,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59148333] [2021-11-09 08:58:41,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:41,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:41,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:41,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:41,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59148333] [2021-11-09 08:58:41,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59148333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:41,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:41,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:58:41,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582105077] [2021-11-09 08:58:41,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:58:41,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:41,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:58:41,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:58:41,218 INFO L87 Difference]: Start difference. First operand 1544 states and 2410 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2021-11-09 08:58:41,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:41,365 INFO L93 Difference]: Finished difference Result 4020 states and 6313 transitions. [2021-11-09 08:58:41,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:58:41,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 138 [2021-11-09 08:58:41,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:41,393 INFO L225 Difference]: With dead ends: 4020 [2021-11-09 08:58:41,394 INFO L226 Difference]: Without dead ends: 2550 [2021-11-09 08:58:41,397 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:58:41,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2021-11-09 08:58:41,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 2548. [2021-11-09 08:58:41,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2547 states have (on average 1.558696505692972) internal successors, (3970), 2547 states have internal predecessors, (3970), 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) [2021-11-09 08:58:41,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 3970 transitions. [2021-11-09 08:58:41,563 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 3970 transitions. Word has length 138 [2021-11-09 08:58:41,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:41,564 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 3970 transitions. [2021-11-09 08:58:41,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2021-11-09 08:58:41,565 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 3970 transitions. [2021-11-09 08:58:41,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-09 08:58:41,571 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:41,571 INFO L513 BasicCegarLoop]: 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] [2021-11-09 08:58:41,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 08:58:41,572 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:41,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:41,573 INFO L85 PathProgramCache]: Analyzing trace with hash 2020324179, now seen corresponding path program 1 times [2021-11-09 08:58:41,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:41,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775931037] [2021-11-09 08:58:41,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:41,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:41,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:41,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775931037] [2021-11-09 08:58:41,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775931037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:41,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:41,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:58:41,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656451839] [2021-11-09 08:58:41,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:58:41,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:41,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:58:41,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:58:41,674 INFO L87 Difference]: Start difference. First operand 2548 states and 3970 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2021-11-09 08:58:41,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:41,921 INFO L93 Difference]: Finished difference Result 6582 states and 10273 transitions. [2021-11-09 08:58:41,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:58:41,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 140 [2021-11-09 08:58:41,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:41,947 INFO L225 Difference]: With dead ends: 6582 [2021-11-09 08:58:41,947 INFO L226 Difference]: Without dead ends: 4114 [2021-11-09 08:58:41,954 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:58:41,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4114 states. [2021-11-09 08:58:42,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4114 to 4112. [2021-11-09 08:58:42,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4112 states, 4111 states have (on average 1.5475553393334955) internal successors, (6362), 4111 states have internal predecessors, (6362), 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) [2021-11-09 08:58:42,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4112 states to 4112 states and 6362 transitions. [2021-11-09 08:58:42,234 INFO L78 Accepts]: Start accepts. Automaton has 4112 states and 6362 transitions. Word has length 140 [2021-11-09 08:58:42,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:42,234 INFO L470 AbstractCegarLoop]: Abstraction has 4112 states and 6362 transitions. [2021-11-09 08:58:42,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2021-11-09 08:58:42,235 INFO L276 IsEmpty]: Start isEmpty. Operand 4112 states and 6362 transitions. [2021-11-09 08:58:42,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-09 08:58:42,269 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:42,269 INFO L513 BasicCegarLoop]: 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] [2021-11-09 08:58:42,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 08:58:42,270 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:42,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:42,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1664881719, now seen corresponding path program 1 times [2021-11-09 08:58:42,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:42,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837925955] [2021-11-09 08:58:42,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:42,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:42,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:42,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:42,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837925955] [2021-11-09 08:58:42,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837925955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:42,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:42,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:58:42,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558777973] [2021-11-09 08:58:42,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:58:42,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:42,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:58:42,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:58:42,344 INFO L87 Difference]: Start difference. First operand 4112 states and 6362 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2021-11-09 08:58:43,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:43,030 INFO L93 Difference]: Finished difference Result 11580 states and 17919 transitions. [2021-11-09 08:58:43,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:58:43,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 142 [2021-11-09 08:58:43,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:43,084 INFO L225 Difference]: With dead ends: 11580 [2021-11-09 08:58:43,085 INFO L226 Difference]: Without dead ends: 8136 [2021-11-09 08:58:43,091 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:58:43,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8136 states. [2021-11-09 08:58:43,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8136 to 8134. [2021-11-09 08:58:43,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8134 states, 8133 states have (on average 1.544694454690766) internal successors, (12563), 8133 states have internal predecessors, (12563), 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) [2021-11-09 08:58:43,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8134 states to 8134 states and 12563 transitions. [2021-11-09 08:58:43,674 INFO L78 Accepts]: Start accepts. Automaton has 8134 states and 12563 transitions. Word has length 142 [2021-11-09 08:58:43,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:43,675 INFO L470 AbstractCegarLoop]: Abstraction has 8134 states and 12563 transitions. [2021-11-09 08:58:43,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2021-11-09 08:58:43,675 INFO L276 IsEmpty]: Start isEmpty. Operand 8134 states and 12563 transitions. [2021-11-09 08:58:43,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-09 08:58:43,697 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:43,697 INFO L513 BasicCegarLoop]: 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] [2021-11-09 08:58:43,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 08:58:43,698 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:43,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:43,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1939070940, now seen corresponding path program 1 times [2021-11-09 08:58:43,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:43,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366110086] [2021-11-09 08:58:43,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:43,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:43,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:43,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:43,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366110086] [2021-11-09 08:58:43,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366110086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:43,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:43,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:58:43,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825042027] [2021-11-09 08:58:43,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:58:43,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:43,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:58:43,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:58:43,841 INFO L87 Difference]: Start difference. First operand 8134 states and 12563 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2021-11-09 08:58:44,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:44,892 INFO L93 Difference]: Finished difference Result 22708 states and 34973 transitions. [2021-11-09 08:58:44,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:58:44,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 142 [2021-11-09 08:58:44,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:44,963 INFO L225 Difference]: With dead ends: 22708 [2021-11-09 08:58:44,964 INFO L226 Difference]: Without dead ends: 16082 [2021-11-09 08:58:44,975 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:58:44,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16082 states. [2021-11-09 08:58:45,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16082 to 16080. [2021-11-09 08:58:45,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16080 states, 16079 states have (on average 1.5380931649978233) internal successors, (24731), 16079 states have internal predecessors, (24731), 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) [2021-11-09 08:58:45,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16080 states to 16080 states and 24731 transitions. [2021-11-09 08:58:45,996 INFO L78 Accepts]: Start accepts. Automaton has 16080 states and 24731 transitions. Word has length 142 [2021-11-09 08:58:45,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:45,997 INFO L470 AbstractCegarLoop]: Abstraction has 16080 states and 24731 transitions. [2021-11-09 08:58:45,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2021-11-09 08:58:45,998 INFO L276 IsEmpty]: Start isEmpty. Operand 16080 states and 24731 transitions. [2021-11-09 08:58:46,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-09 08:58:46,047 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:46,047 INFO L513 BasicCegarLoop]: 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] [2021-11-09 08:58:46,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 08:58:46,048 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:46,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:46,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1442401375, now seen corresponding path program 1 times [2021-11-09 08:58:46,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:46,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314473502] [2021-11-09 08:58:46,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:46,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:46,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:46,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:46,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314473502] [2021-11-09 08:58:46,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314473502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:46,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:46,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:58:46,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796606619] [2021-11-09 08:58:46,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:58:46,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:46,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:58:46,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:58:46,161 INFO L87 Difference]: Start difference. First operand 16080 states and 24731 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 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) [2021-11-09 08:58:47,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:47,295 INFO L93 Difference]: Finished difference Result 32046 states and 49324 transitions. [2021-11-09 08:58:47,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:58:47,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 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 142 [2021-11-09 08:58:47,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:47,343 INFO L225 Difference]: With dead ends: 32046 [2021-11-09 08:58:47,343 INFO L226 Difference]: Without dead ends: 16080 [2021-11-09 08:58:47,371 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:58:47,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16080 states. [2021-11-09 08:58:48,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16080 to 16080. [2021-11-09 08:58:48,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16080 states, 16079 states have (on average 1.5219230051620125) internal successors, (24471), 16079 states have internal predecessors, (24471), 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) [2021-11-09 08:58:48,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16080 states to 16080 states and 24471 transitions. [2021-11-09 08:58:48,443 INFO L78 Accepts]: Start accepts. Automaton has 16080 states and 24471 transitions. Word has length 142 [2021-11-09 08:58:48,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:48,444 INFO L470 AbstractCegarLoop]: Abstraction has 16080 states and 24471 transitions. [2021-11-09 08:58:48,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 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) [2021-11-09 08:58:48,444 INFO L276 IsEmpty]: Start isEmpty. Operand 16080 states and 24471 transitions. [2021-11-09 08:58:48,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-09 08:58:48,486 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:48,486 INFO L513 BasicCegarLoop]: 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] [2021-11-09 08:58:48,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 08:58:48,487 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:48,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:48,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1983642689, now seen corresponding path program 1 times [2021-11-09 08:58:48,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:48,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434452790] [2021-11-09 08:58:48,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:48,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:48,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:48,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:48,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434452790] [2021-11-09 08:58:48,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434452790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:48,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:48,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:58:48,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904478252] [2021-11-09 08:58:48,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:58:48,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:48,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:58:48,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:58:48,603 INFO L87 Difference]: Start difference. First operand 16080 states and 24471 transitions. Second operand has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 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) [2021-11-09 08:58:50,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:50,067 INFO L93 Difference]: Finished difference Result 32428 states and 49185 transitions. [2021-11-09 08:58:50,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:58:50,068 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 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 142 [2021-11-09 08:58:50,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:50,118 INFO L225 Difference]: With dead ends: 32428 [2021-11-09 08:58:50,118 INFO L226 Difference]: Without dead ends: 17612 [2021-11-09 08:58:50,137 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:58:50,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17612 states. [2021-11-09 08:58:51,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17612 to 17610. [2021-11-09 08:58:51,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17610 states, 17609 states have (on average 1.510477596683514) internal successors, (26598), 17609 states have internal predecessors, (26598), 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) [2021-11-09 08:58:51,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17610 states to 17610 states and 26598 transitions. [2021-11-09 08:58:51,138 INFO L78 Accepts]: Start accepts. Automaton has 17610 states and 26598 transitions. Word has length 142 [2021-11-09 08:58:51,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:51,138 INFO L470 AbstractCegarLoop]: Abstraction has 17610 states and 26598 transitions. [2021-11-09 08:58:51,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 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) [2021-11-09 08:58:51,139 INFO L276 IsEmpty]: Start isEmpty. Operand 17610 states and 26598 transitions. [2021-11-09 08:58:51,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-09 08:58:51,177 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:51,178 INFO L513 BasicCegarLoop]: 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] [2021-11-09 08:58:51,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 08:58:51,178 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:51,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:51,179 INFO L85 PathProgramCache]: Analyzing trace with hash -962409377, now seen corresponding path program 1 times [2021-11-09 08:58:51,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:51,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944267725] [2021-11-09 08:58:51,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:51,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:51,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:51,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:51,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944267725] [2021-11-09 08:58:51,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944267725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:51,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:51,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:58:51,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907195347] [2021-11-09 08:58:51,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:58:51,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:51,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:58:51,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:58:51,312 INFO L87 Difference]: Start difference. First operand 17610 states and 26598 transitions. Second operand has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 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) [2021-11-09 08:58:53,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:53,391 INFO L93 Difference]: Finished difference Result 50624 states and 76312 transitions. [2021-11-09 08:58:53,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:58:53,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 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 142 [2021-11-09 08:58:53,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:53,462 INFO L225 Difference]: With dead ends: 50624 [2021-11-09 08:58:53,462 INFO L226 Difference]: Without dead ends: 33080 [2021-11-09 08:58:53,486 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:58:53,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33080 states. [2021-11-09 08:58:55,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33080 to 33078. [2021-11-09 08:58:55,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33078 states, 33077 states have (on average 1.4995616289264444) internal successors, (49601), 33077 states have internal predecessors, (49601), 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) [2021-11-09 08:58:55,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33078 states to 33078 states and 49601 transitions. [2021-11-09 08:58:55,158 INFO L78 Accepts]: Start accepts. Automaton has 33078 states and 49601 transitions. Word has length 142 [2021-11-09 08:58:55,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:55,159 INFO L470 AbstractCegarLoop]: Abstraction has 33078 states and 49601 transitions. [2021-11-09 08:58:55,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 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) [2021-11-09 08:58:55,159 INFO L276 IsEmpty]: Start isEmpty. Operand 33078 states and 49601 transitions. [2021-11-09 08:58:55,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-09 08:58:55,208 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:55,208 INFO L513 BasicCegarLoop]: 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] [2021-11-09 08:58:55,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 08:58:55,209 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:55,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:55,210 INFO L85 PathProgramCache]: Analyzing trace with hash 754973141, now seen corresponding path program 1 times [2021-11-09 08:58:55,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:55,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842492949] [2021-11-09 08:58:55,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:55,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:55,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:55,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842492949] [2021-11-09 08:58:55,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842492949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:55,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:55,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 08:58:55,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945178367] [2021-11-09 08:58:55,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:58:55,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:55,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:58:55,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:58:55,446 INFO L87 Difference]: Start difference. First operand 33078 states and 49601 transitions. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2021-11-09 08:59:10,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:10,584 INFO L93 Difference]: Finished difference Result 302936 states and 452744 transitions. [2021-11-09 08:59:10,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 08:59:10,584 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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 142 [2021-11-09 08:59:10,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:11,334 INFO L225 Difference]: With dead ends: 302936 [2021-11-09 08:59:11,334 INFO L226 Difference]: Without dead ends: 269958 [2021-11-09 08:59:11,524 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:59:11,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269958 states. [2021-11-09 08:59:18,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269958 to 65732. [2021-11-09 08:59:19,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65732 states, 65731 states have (on average 1.4713453317308425) internal successors, (96713), 65731 states have internal predecessors, (96713), 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) [2021-11-09 08:59:19,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65732 states to 65732 states and 96713 transitions. [2021-11-09 08:59:19,160 INFO L78 Accepts]: Start accepts. Automaton has 65732 states and 96713 transitions. Word has length 142 [2021-11-09 08:59:19,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:19,160 INFO L470 AbstractCegarLoop]: Abstraction has 65732 states and 96713 transitions. [2021-11-09 08:59:19,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2021-11-09 08:59:19,160 INFO L276 IsEmpty]: Start isEmpty. Operand 65732 states and 96713 transitions. [2021-11-09 08:59:19,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-09 08:59:19,243 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:19,243 INFO L513 BasicCegarLoop]: 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] [2021-11-09 08:59:19,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 08:59:19,244 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:59:19,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:19,245 INFO L85 PathProgramCache]: Analyzing trace with hash -595879626, now seen corresponding path program 1 times [2021-11-09 08:59:19,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:59:19,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043922483] [2021-11-09 08:59:19,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:19,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:59:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:19,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:19,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:59:19,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043922483] [2021-11-09 08:59:19,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043922483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:19,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:19,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 08:59:19,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279502175] [2021-11-09 08:59:19,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:59:19,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:59:19,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:59:19,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:59:19,451 INFO L87 Difference]: Start difference. First operand 65732 states and 96713 transitions. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 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)