./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-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_c51d2029-d16f-4b8f-9a03-11a71595721b/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c51d2029-d16f-4b8f-9a03-11a71595721b/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_c51d2029-d16f-4b8f-9a03-11a71595721b/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c51d2029-d16f-4b8f-9a03-11a71595721b/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c51d2029-d16f-4b8f-9a03-11a71595721b/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_c51d2029-d16f-4b8f-9a03-11a71595721b/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 f4319f1617264b859ec72b12374ecf2c184fa129f0736ad4fd8fa304d4c3211b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:58:55,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:58:55,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:58:55,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:58:55,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:58:55,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:58:55,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:58:55,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:58:55,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:58:55,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:58:55,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:58:55,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:58:55,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:58:55,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:58:55,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:58:55,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:58:55,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:58:55,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:58:55,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:58:55,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:58:55,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:58:55,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:58:55,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:58:55,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:58:55,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:58:55,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:58:55,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:58:55,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:58:55,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:58:55,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:58:55,375 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:58:55,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:58:55,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:58:55,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:58:55,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:58:55,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:58:55,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:58:55,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:58:55,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:58:55,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:58:55,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:58:55,386 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c51d2029-d16f-4b8f-9a03-11a71595721b/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 08:58:55,432 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:58:55,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:58:55,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:58:55,434 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:58:55,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:58:55,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:58:55,443 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:58:55,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:58:55,443 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:58:55,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:58:55,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:58:55,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:58:55,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:58:55,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:58:55,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:58:55,445 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:58:55,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:58:55,446 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:58:55,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:58:55,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:58:55,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:58:55,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:58:55,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:58:55,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:58:55,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:58:55,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:58:55,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:58:55,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:58:55,448 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:58:55,449 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:58:55,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:58:55,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:58:55,450 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_c51d2029-d16f-4b8f-9a03-11a71595721b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c51d2029-d16f-4b8f-9a03-11a71595721b/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4319f1617264b859ec72b12374ecf2c184fa129f0736ad4fd8fa304d4c3211b [2021-11-09 08:58:55,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:58:55,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:58:55,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:58:55,773 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:58:55,774 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:58:55,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c51d2029-d16f-4b8f-9a03-11a71595721b/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-11-09 08:58:55,845 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c51d2029-d16f-4b8f-9a03-11a71595721b/bin/uautomizer-IVEQpCNsaX/data/570036181/1727bd9717614c3dad443f48f14d81a2/FLAG016ad747e [2021-11-09 08:58:56,526 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:58:56,535 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c51d2029-d16f-4b8f-9a03-11a71595721b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-11-09 08:58:56,564 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c51d2029-d16f-4b8f-9a03-11a71595721b/bin/uautomizer-IVEQpCNsaX/data/570036181/1727bd9717614c3dad443f48f14d81a2/FLAG016ad747e [2021-11-09 08:58:56,684 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c51d2029-d16f-4b8f-9a03-11a71595721b/bin/uautomizer-IVEQpCNsaX/data/570036181/1727bd9717614c3dad443f48f14d81a2 [2021-11-09 08:58:56,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:58:56,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:58:56,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:58:56,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:58:56,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:58:56,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:58:56" (1/1) ... [2021-11-09 08:58:56,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424ef041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:56, skipping insertion in model container [2021-11-09 08:58:56,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:58:56" (1/1) ... [2021-11-09 08:58:56,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:58:56,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:58:57,259 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_c51d2029-d16f-4b8f-9a03-11a71595721b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[21524,21537] [2021-11-09 08:58:57,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:58:57,495 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:58:57,766 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_c51d2029-d16f-4b8f-9a03-11a71595721b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[21524,21537] [2021-11-09 08:58:57,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:58:57,932 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:58:57,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:57 WrapperNode [2021-11-09 08:58:57,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:58:57,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:58:57,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:58:57,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:58:57,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:57" (1/1) ... [2021-11-09 08:58:57,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:57" (1/1) ... [2021-11-09 08:58:58,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:58:58,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:58:58,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:58:58,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:58:58,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:57" (1/1) ... [2021-11-09 08:58:58,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:57" (1/1) ... [2021-11-09 08:58:58,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:57" (1/1) ... [2021-11-09 08:58:58,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:57" (1/1) ... [2021-11-09 08:58:58,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:57" (1/1) ... [2021-11-09 08:58:58,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:57" (1/1) ... [2021-11-09 08:58:58,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:57" (1/1) ... [2021-11-09 08:58:58,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:58:58,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:58:58,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:58:58,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:58:58,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:57" (1/1) ... [2021-11-09 08:58:58,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:58:58,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c51d2029-d16f-4b8f-9a03-11a71595721b/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:58:58,282 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c51d2029-d16f-4b8f-9a03-11a71595721b/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:58:58,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c51d2029-d16f-4b8f-9a03-11a71595721b/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:58:58,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:58:58,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:58:58,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:58:58,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:59:00,224 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:59:00,227 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-09 08:59:00,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:59:00 BoogieIcfgContainer [2021-11-09 08:59:00,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:59:00,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:59:00,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:59:00,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:59:00,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:58:56" (1/3) ... [2021-11-09 08:59:00,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722a5e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:59:00, skipping insertion in model container [2021-11-09 08:59:00,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:57" (2/3) ... [2021-11-09 08:59:00,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722a5e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:59:00, skipping insertion in model container [2021-11-09 08:59:00,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:59:00" (3/3) ... [2021-11-09 08:59:00,240 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-11-09 08:59:00,250 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:59:00,250 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 08:59:00,301 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:59:00,307 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 08:59:00,308 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 08:59:00,340 INFO L276 IsEmpty]: Start isEmpty. Operand has 716 states, 714 states have (on average 1.8375350140056022) internal successors, (1312), 715 states have internal predecessors, (1312), 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 08:59:00,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-09 08:59:00,379 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:00,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:00,381 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:59:00,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:00,387 INFO L85 PathProgramCache]: Analyzing trace with hash 898129935, now seen corresponding path program 1 times [2021-11-09 08:59:00,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:59:00,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502174180] [2021-11-09 08:59:00,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:00,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:59:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:01,105 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 08:59:01,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:59:01,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502174180] [2021-11-09 08:59:01,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502174180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:01,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:01,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:59:01,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466241537] [2021-11-09 08:59:01,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:59:01,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:59:01,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:59:01,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:59:01,137 INFO L87 Difference]: Start difference. First operand has 716 states, 714 states have (on average 1.8375350140056022) internal successors, (1312), 715 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 08:59:01,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:01,290 INFO L93 Difference]: Finished difference Result 1089 states and 1943 transitions. [2021-11-09 08:59:01,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:59:01,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 184 [2021-11-09 08:59:01,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:01,324 INFO L225 Difference]: With dead ends: 1089 [2021-11-09 08:59:01,324 INFO L226 Difference]: Without dead ends: 890 [2021-11-09 08:59:01,329 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 08:59:01,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-11-09 08:59:01,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 888. [2021-11-09 08:59:01,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 887 states have (on average 1.7587373167981961) internal successors, (1560), 887 states have internal predecessors, (1560), 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 08:59:01,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1560 transitions. [2021-11-09 08:59:01,467 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1560 transitions. Word has length 184 [2021-11-09 08:59:01,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:01,468 INFO L470 AbstractCegarLoop]: Abstraction has 888 states and 1560 transitions. [2021-11-09 08:59:01,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 08:59:01,469 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1560 transitions. [2021-11-09 08:59:01,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-09 08:59:01,476 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:01,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:01,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:59:01,477 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:59:01,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:01,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1119640315, now seen corresponding path program 1 times [2021-11-09 08:59:01,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:59:01,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267758801] [2021-11-09 08:59:01,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:01,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:59:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:01,739 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 08:59:01,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:59:01,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267758801] [2021-11-09 08:59:01,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267758801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:01,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:01,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:59:01,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020433716] [2021-11-09 08:59:01,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:59:01,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:59:01,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:59:01,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:59:01,747 INFO L87 Difference]: Start difference. First operand 888 states and 1560 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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 08:59:01,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:01,824 INFO L93 Difference]: Finished difference Result 1237 states and 2155 transitions. [2021-11-09 08:59:01,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:59:01,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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 188 [2021-11-09 08:59:01,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:01,834 INFO L225 Difference]: With dead ends: 1237 [2021-11-09 08:59:01,834 INFO L226 Difference]: Without dead ends: 1047 [2021-11-09 08:59:01,840 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 08:59:01,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2021-11-09 08:59:01,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1045. [2021-11-09 08:59:01,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 1044 states have (on average 1.7509578544061302) internal successors, (1828), 1044 states have internal predecessors, (1828), 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 08:59:01,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1828 transitions. [2021-11-09 08:59:01,913 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1828 transitions. Word has length 188 [2021-11-09 08:59:01,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:01,915 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 1828 transitions. [2021-11-09 08:59:01,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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 08:59:01,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1828 transitions. [2021-11-09 08:59:01,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-09 08:59:01,920 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:01,921 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:01,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:59:01,922 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:59:01,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:01,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2018051092, now seen corresponding path program 1 times [2021-11-09 08:59:01,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:59:01,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528260736] [2021-11-09 08:59:01,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:01,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:59:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:02,169 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 08:59:02,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:59:02,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528260736] [2021-11-09 08:59:02,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528260736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:02,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:02,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:59:02,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208993812] [2021-11-09 08:59:02,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:59:02,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:59:02,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:59:02,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:59:02,183 INFO L87 Difference]: Start difference. First operand 1045 states and 1828 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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 08:59:02,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:02,268 INFO L93 Difference]: Finished difference Result 2052 states and 3531 transitions. [2021-11-09 08:59:02,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:59:02,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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 188 [2021-11-09 08:59:02,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:02,284 INFO L225 Difference]: With dead ends: 2052 [2021-11-09 08:59:02,284 INFO L226 Difference]: Without dead ends: 1532 [2021-11-09 08:59:02,286 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 08:59:02,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2021-11-09 08:59:02,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1530. [2021-11-09 08:59:02,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1529 states have (on average 1.7292347939829955) internal successors, (2644), 1529 states have internal predecessors, (2644), 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 08:59:02,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 2644 transitions. [2021-11-09 08:59:02,358 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 2644 transitions. Word has length 188 [2021-11-09 08:59:02,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:02,359 INFO L470 AbstractCegarLoop]: Abstraction has 1530 states and 2644 transitions. [2021-11-09 08:59:02,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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 08:59:02,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 2644 transitions. [2021-11-09 08:59:02,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-09 08:59:02,364 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:02,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:02,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 08:59:02,365 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:59:02,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:02,368 INFO L85 PathProgramCache]: Analyzing trace with hash -689859409, now seen corresponding path program 1 times [2021-11-09 08:59:02,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:59:02,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045198557] [2021-11-09 08:59:02,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:02,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:59:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:02,565 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 08:59:02,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:59:02,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045198557] [2021-11-09 08:59:02,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045198557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:02,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:02,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:59:02,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471925387] [2021-11-09 08:59:02,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:59:02,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:59:02,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:59:02,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:59:02,574 INFO L87 Difference]: Start difference. First operand 1530 states and 2644 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 08:59:02,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:02,692 INFO L93 Difference]: Finished difference Result 3474 states and 5916 transitions. [2021-11-09 08:59:02,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:59:02,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 192 [2021-11-09 08:59:02,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:02,710 INFO L225 Difference]: With dead ends: 3474 [2021-11-09 08:59:02,710 INFO L226 Difference]: Without dead ends: 2469 [2021-11-09 08:59:02,714 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 08:59:02,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2021-11-09 08:59:02,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2467. [2021-11-09 08:59:02,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2466 states have (on average 1.7072181670721818) internal successors, (4210), 2466 states have internal predecessors, (4210), 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 08:59:02,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 4210 transitions. [2021-11-09 08:59:02,890 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 4210 transitions. Word has length 192 [2021-11-09 08:59:02,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:02,890 INFO L470 AbstractCegarLoop]: Abstraction has 2467 states and 4210 transitions. [2021-11-09 08:59:02,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 08:59:02,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 4210 transitions. [2021-11-09 08:59:02,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-09 08:59:02,896 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:02,896 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:02,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 08:59:02,897 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:59:02,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:02,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1139258805, now seen corresponding path program 1 times [2021-11-09 08:59:02,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:59:02,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654941766] [2021-11-09 08:59:02,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:02,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:59:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:03,055 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 08:59:03,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:59:03,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654941766] [2021-11-09 08:59:03,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654941766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:03,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:03,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:59:03,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562160413] [2021-11-09 08:59:03,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:59:03,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:59:03,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:59:03,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:59:03,059 INFO L87 Difference]: Start difference. First operand 2467 states and 4210 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 08:59:03,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:03,244 INFO L93 Difference]: Finished difference Result 4337 states and 7367 transitions. [2021-11-09 08:59:03,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:59:03,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 196 [2021-11-09 08:59:03,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:03,267 INFO L225 Difference]: With dead ends: 4337 [2021-11-09 08:59:03,268 INFO L226 Difference]: Without dead ends: 3332 [2021-11-09 08:59:03,270 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 08:59:03,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3332 states. [2021-11-09 08:59:03,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3332 to 3330. [2021-11-09 08:59:03,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3330 states, 3329 states have (on average 1.699909882847702) internal successors, (5659), 3329 states have internal predecessors, (5659), 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 08:59:03,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3330 states to 3330 states and 5659 transitions. [2021-11-09 08:59:03,456 INFO L78 Accepts]: Start accepts. Automaton has 3330 states and 5659 transitions. Word has length 196 [2021-11-09 08:59:03,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:03,457 INFO L470 AbstractCegarLoop]: Abstraction has 3330 states and 5659 transitions. [2021-11-09 08:59:03,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 08:59:03,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3330 states and 5659 transitions. [2021-11-09 08:59:03,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-09 08:59:03,462 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:03,462 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:03,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 08:59:03,463 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:59:03,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:03,463 INFO L85 PathProgramCache]: Analyzing trace with hash -939390388, now seen corresponding path program 1 times [2021-11-09 08:59:03,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:59:03,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362760963] [2021-11-09 08:59:03,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:03,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:59:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:03,614 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 08:59:03,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:59:03,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362760963] [2021-11-09 08:59:03,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362760963] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:03,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:03,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:59:03,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563663076] [2021-11-09 08:59:03,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:59:03,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:59:03,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:59:03,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:59:03,623 INFO L87 Difference]: Start difference. First operand 3330 states and 5659 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 08:59:03,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:03,931 INFO L93 Difference]: Finished difference Result 8626 states and 14523 transitions. [2021-11-09 08:59:03,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:59:03,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 196 [2021-11-09 08:59:03,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:03,977 INFO L225 Difference]: With dead ends: 8626 [2021-11-09 08:59:03,978 INFO L226 Difference]: Without dead ends: 5879 [2021-11-09 08:59:03,987 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 08:59:03,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5879 states. [2021-11-09 08:59:04,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5879 to 5877. [2021-11-09 08:59:04,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5877 states, 5876 states have (on average 1.681926480599047) internal successors, (9883), 5876 states have internal predecessors, (9883), 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 08:59:04,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5877 states to 5877 states and 9883 transitions. [2021-11-09 08:59:04,351 INFO L78 Accepts]: Start accepts. Automaton has 5877 states and 9883 transitions. Word has length 196 [2021-11-09 08:59:04,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:04,351 INFO L470 AbstractCegarLoop]: Abstraction has 5877 states and 9883 transitions. [2021-11-09 08:59:04,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 08:59:04,352 INFO L276 IsEmpty]: Start isEmpty. Operand 5877 states and 9883 transitions. [2021-11-09 08:59:04,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-09 08:59:04,356 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:04,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:04,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 08:59:04,357 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:59:04,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:04,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1438127064, now seen corresponding path program 1 times [2021-11-09 08:59:04,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:59:04,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589312916] [2021-11-09 08:59:04,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:04,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:59:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:04,522 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 08:59:04,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:59:04,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589312916] [2021-11-09 08:59:04,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589312916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:04,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:04,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:59:04,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789214256] [2021-11-09 08:59:04,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:59:04,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:59:04,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:59:04,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:59:04,526 INFO L87 Difference]: Start difference. First operand 5877 states and 9883 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 08:59:04,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:04,992 INFO L93 Difference]: Finished difference Result 10823 states and 18189 transitions. [2021-11-09 08:59:04,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:59:04,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 200 [2021-11-09 08:59:04,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:05,069 INFO L225 Difference]: With dead ends: 10823 [2021-11-09 08:59:05,069 INFO L226 Difference]: Without dead ends: 8076 [2021-11-09 08:59:05,077 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 08:59:05,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8076 states. [2021-11-09 08:59:05,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8076 to 8074. [2021-11-09 08:59:05,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8074 states, 8073 states have (on average 1.6780626780626782) internal successors, (13547), 8073 states have internal predecessors, (13547), 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 08:59:05,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8074 states to 8074 states and 13547 transitions. [2021-11-09 08:59:05,631 INFO L78 Accepts]: Start accepts. Automaton has 8074 states and 13547 transitions. Word has length 200 [2021-11-09 08:59:05,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:05,632 INFO L470 AbstractCegarLoop]: Abstraction has 8074 states and 13547 transitions. [2021-11-09 08:59:05,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 08:59:05,633 INFO L276 IsEmpty]: Start isEmpty. Operand 8074 states and 13547 transitions. [2021-11-09 08:59:05,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-09 08:59:05,636 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:05,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:05,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 08:59:05,637 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:59:05,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:05,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1388814671, now seen corresponding path program 1 times [2021-11-09 08:59:05,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:59:05,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060166505] [2021-11-09 08:59:05,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:05,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:59:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:05,747 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 08:59:05,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:59:05,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060166505] [2021-11-09 08:59:05,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060166505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:05,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:05,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:59:05,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364247834] [2021-11-09 08:59:05,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:59:05,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:59:05,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:59:05,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:59:05,750 INFO L87 Difference]: Start difference. First operand 8074 states and 13547 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 08:59:06,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:06,601 INFO L93 Difference]: Finished difference Result 22370 states and 37291 transitions. [2021-11-09 08:59:06,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:59:06,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 200 [2021-11-09 08:59:06,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:06,646 INFO L225 Difference]: With dead ends: 22370 [2021-11-09 08:59:06,646 INFO L226 Difference]: Without dead ends: 14925 [2021-11-09 08:59:06,659 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 08:59:06,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14925 states. [2021-11-09 08:59:07,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14925 to 14923. [2021-11-09 08:59:07,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14923 states, 14922 states have (on average 1.6617745610507975) internal successors, (24797), 14922 states have internal predecessors, (24797), 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 08:59:07,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14923 states to 14923 states and 24797 transitions. [2021-11-09 08:59:07,567 INFO L78 Accepts]: Start accepts. Automaton has 14923 states and 24797 transitions. Word has length 200 [2021-11-09 08:59:07,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:07,568 INFO L470 AbstractCegarLoop]: Abstraction has 14923 states and 24797 transitions. [2021-11-09 08:59:07,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 08:59:07,569 INFO L276 IsEmpty]: Start isEmpty. Operand 14923 states and 24797 transitions. [2021-11-09 08:59:07,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-09 08:59:07,574 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:07,574 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:07,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 08:59:07,574 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:59:07,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:07,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1584670309, now seen corresponding path program 1 times [2021-11-09 08:59:07,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:59:07,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776906135] [2021-11-09 08:59:07,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:07,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:59:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:07,739 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 08:59:07,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:59:07,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776906135] [2021-11-09 08:59:07,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776906135] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:07,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:07,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:59:07,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410862086] [2021-11-09 08:59:07,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:59:07,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:59:07,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:59:07,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:59:07,742 INFO L87 Difference]: Start difference. First operand 14923 states and 24797 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 08:59:08,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:08,724 INFO L93 Difference]: Finished difference Result 28077 states and 46723 transitions. [2021-11-09 08:59:08,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:59:08,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 204 [2021-11-09 08:59:08,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:08,784 INFO L225 Difference]: With dead ends: 28077 [2021-11-09 08:59:08,785 INFO L226 Difference]: Without dead ends: 20632 [2021-11-09 08:59:08,804 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 08:59:08,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20632 states. [2021-11-09 08:59:09,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20632 to 20630. [2021-11-09 08:59:09,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20630 states, 20629 states have (on average 1.6591691308352319) internal successors, (34227), 20629 states have internal predecessors, (34227), 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 08:59:09,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20630 states to 20630 states and 34227 transitions. [2021-11-09 08:59:09,998 INFO L78 Accepts]: Start accepts. Automaton has 20630 states and 34227 transitions. Word has length 204 [2021-11-09 08:59:09,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:09,999 INFO L470 AbstractCegarLoop]: Abstraction has 20630 states and 34227 transitions. [2021-11-09 08:59:09,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 08:59:10,000 INFO L276 IsEmpty]: Start isEmpty. Operand 20630 states and 34227 transitions. [2021-11-09 08:59:10,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-09 08:59:10,005 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:10,005 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:10,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 08:59:10,006 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:59:10,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:10,007 INFO L85 PathProgramCache]: Analyzing trace with hash -247447380, now seen corresponding path program 1 times [2021-11-09 08:59:10,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:59:10,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979391419] [2021-11-09 08:59:10,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:10,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:59:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:10,245 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 08:59:10,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:59:10,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979391419] [2021-11-09 08:59:10,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979391419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:10,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:10,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 08:59:10,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749576009] [2021-11-09 08:59:10,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:59:10,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:59:10,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:59:10,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:59:10,249 INFO L87 Difference]: Start difference. First operand 20630 states and 34227 transitions. Second operand has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 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 08:59:15,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:15,182 INFO L93 Difference]: Finished difference Result 126543 states and 210523 transitions. [2021-11-09 08:59:15,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 08:59:15,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 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 204 [2021-11-09 08:59:15,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:15,583 INFO L225 Difference]: With dead ends: 126543 [2021-11-09 08:59:15,583 INFO L226 Difference]: Without dead ends: 106588 [2021-11-09 08:59:15,688 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:59:15,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106588 states. [2021-11-09 08:59:18,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106588 to 40500. [2021-11-09 08:59:18,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40500 states, 40499 states have (on average 1.6512012642287464) internal successors, (66872), 40499 states have internal predecessors, (66872), 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 08:59:18,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40500 states to 40500 states and 66872 transitions. [2021-11-09 08:59:18,912 INFO L78 Accepts]: Start accepts. Automaton has 40500 states and 66872 transitions. Word has length 204 [2021-11-09 08:59:18,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:18,912 INFO L470 AbstractCegarLoop]: Abstraction has 40500 states and 66872 transitions. [2021-11-09 08:59:18,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 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 08:59:18,913 INFO L276 IsEmpty]: Start isEmpty. Operand 40500 states and 66872 transitions. [2021-11-09 08:59:18,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-09 08:59:18,917 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:18,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:18,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 08:59:18,918 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:59:18,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:18,918 INFO L85 PathProgramCache]: Analyzing trace with hash 847446003, now seen corresponding path program 1 times [2021-11-09 08:59:18,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:59:18,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871663905] [2021-11-09 08:59:18,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:18,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:59:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:19,053 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 08:59:19,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:59:19,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871663905] [2021-11-09 08:59:19,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871663905] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:19,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:19,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:59:19,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035191295] [2021-11-09 08:59:19,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:59:19,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:59:19,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:59:19,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:59:19,058 INFO L87 Difference]: Start difference. First operand 40500 states and 66872 transitions. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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 08:59:23,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:23,116 INFO L93 Difference]: Finished difference Result 119299 states and 197712 transitions. [2021-11-09 08:59:23,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:59:23,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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 205 [2021-11-09 08:59:23,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:23,549 INFO L225 Difference]: With dead ends: 119299 [2021-11-09 08:59:23,550 INFO L226 Difference]: Without dead ends: 79522 [2021-11-09 08:59:23,646 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 08:59:23,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79522 states. [2021-11-09 08:59:27,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79522 to 66490. [2021-11-09 08:59:27,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66490 states, 66489 states have (on average 1.6526041901667945) internal successors, (109880), 66489 states have internal predecessors, (109880), 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 08:59:27,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66490 states to 66490 states and 109880 transitions. [2021-11-09 08:59:27,769 INFO L78 Accepts]: Start accepts. Automaton has 66490 states and 109880 transitions. Word has length 205 [2021-11-09 08:59:27,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:27,770 INFO L470 AbstractCegarLoop]: Abstraction has 66490 states and 109880 transitions. [2021-11-09 08:59:27,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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 08:59:27,771 INFO L276 IsEmpty]: Start isEmpty. Operand 66490 states and 109880 transitions. [2021-11-09 08:59:27,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-09 08:59:27,777 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:27,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:27,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 08:59:27,778 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:59:27,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:27,779 INFO L85 PathProgramCache]: Analyzing trace with hash -258860870, now seen corresponding path program 1 times [2021-11-09 08:59:27,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:59:27,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874144993] [2021-11-09 08:59:27,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:27,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:59:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:27,913 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 08:59:27,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:59:27,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874144993] [2021-11-09 08:59:27,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874144993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:27,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:27,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:59:27,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518717957] [2021-11-09 08:59:27,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:59:27,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:59:27,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:59:27,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:59:27,916 INFO L87 Difference]: Start difference. First operand 66490 states and 109880 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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 08:59:32,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:32,491 INFO L93 Difference]: Finished difference Result 126704 states and 209944 transitions. [2021-11-09 08:59:32,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:59:32,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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 205 [2021-11-09 08:59:32,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:32,746 INFO L225 Difference]: With dead ends: 126704 [2021-11-09 08:59:32,746 INFO L226 Difference]: Without dead ends: 92036 [2021-11-09 08:59:32,788 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 08:59:32,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92036 states. [2021-11-09 08:59:37,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92036 to 92034. [2021-11-09 08:59:38,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92034 states, 92033 states have (on average 1.6506687818499886) internal successors, (151916), 92033 states have internal predecessors, (151916), 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 08:59:38,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92034 states to 92034 states and 151916 transitions. [2021-11-09 08:59:38,240 INFO L78 Accepts]: Start accepts. Automaton has 92034 states and 151916 transitions. Word has length 205 [2021-11-09 08:59:38,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:38,240 INFO L470 AbstractCegarLoop]: Abstraction has 92034 states and 151916 transitions. [2021-11-09 08:59:38,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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 08:59:38,241 INFO L276 IsEmpty]: Start isEmpty. Operand 92034 states and 151916 transitions. [2021-11-09 08:59:38,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-09 08:59:38,245 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:38,246 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:38,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 08:59:38,246 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:59:38,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:38,247 INFO L85 PathProgramCache]: Analyzing trace with hash 433960531, now seen corresponding path program 1 times [2021-11-09 08:59:38,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:59:38,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883548278] [2021-11-09 08:59:38,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:38,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:59:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:38,386 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 08:59:38,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:59:38,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883548278] [2021-11-09 08:59:38,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883548278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:38,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:38,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:59:38,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842196579] [2021-11-09 08:59:38,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:59:38,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:59:38,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:59:38,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:59:38,389 INFO L87 Difference]: Start difference. First operand 92034 states and 151916 transitions. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 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)