./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY --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 5c6d968f3bfd626cfd1fff51fa64657ab37ae457da61332877d0ea5ab7fc90f2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:24:04,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:24:04,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:24:04,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:24:04,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:24:04,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:24:04,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:24:04,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:24:04,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:24:04,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:24:04,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:24:04,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:24:04,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:24:04,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:24:04,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:24:04,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:24:04,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:24:04,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:24:04,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:24:04,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:24:04,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:24:04,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:24:04,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:24:04,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:24:04,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:24:04,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:24:04,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:24:04,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:24:04,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:24:04,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:24:04,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:24:04,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:24:04,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:24:04,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:24:04,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:24:04,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:24:04,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:24:04,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:24:04,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:24:04,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:24:04,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:24:04,373 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 08:24:04,430 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:24:04,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:24:04,431 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:24:04,440 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:24:04,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:24:04,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:24:04,442 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:24:04,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:24:04,443 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:24:04,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:24:04,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:24:04,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:24:04,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:24:04,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:24:04,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:24:04,447 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:24:04,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:24:04,447 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:24:04,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:24:04,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:24:04,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:24:04,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:24:04,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:24:04,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:24:04,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:24:04,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:24:04,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:24:04,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:24:04,451 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:24:04,453 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:24:04,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:24:04,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:24:04,455 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_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c6d968f3bfd626cfd1fff51fa64657ab37ae457da61332877d0ea5ab7fc90f2 [2021-11-07 08:24:04,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:24:04,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:24:04,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:24:04,855 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:24:04,856 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:24:04,858 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2021-11-07 08:24:04,987 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/data/0e77b2b25/b679be30919b4519ac9cd759244ff436/FLAGa371f79d3 [2021-11-07 08:24:05,782 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:24:05,785 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2021-11-07 08:24:05,815 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/data/0e77b2b25/b679be30919b4519ac9cd759244ff436/FLAGa371f79d3 [2021-11-07 08:24:06,037 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/data/0e77b2b25/b679be30919b4519ac9cd759244ff436 [2021-11-07 08:24:06,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:24:06,043 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:24:06,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:24:06,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:24:06,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:24:06,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:24:06" (1/1) ... [2021-11-07 08:24:06,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f89eaf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:06, skipping insertion in model container [2021-11-07 08:24:06,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:24:06" (1/1) ... [2021-11-07 08:24:06,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:24:06,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:24:06,629 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_0af97d40-ddda-413a-b7e0-07247d87d1c3/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c[14698,14711] [2021-11-07 08:24:06,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:24:06,656 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:24:06,742 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_0af97d40-ddda-413a-b7e0-07247d87d1c3/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c[14698,14711] [2021-11-07 08:24:06,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:24:06,765 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:24:06,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:06 WrapperNode [2021-11-07 08:24:06,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:24:06,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:24:06,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:24:06,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:24:06,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:06" (1/1) ... [2021-11-07 08:24:06,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:06" (1/1) ... [2021-11-07 08:24:06,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:24:06,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:24:06,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:24:06,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:24:06,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:06" (1/1) ... [2021-11-07 08:24:06,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:06" (1/1) ... [2021-11-07 08:24:06,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:06" (1/1) ... [2021-11-07 08:24:06,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:06" (1/1) ... [2021-11-07 08:24:06,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:06" (1/1) ... [2021-11-07 08:24:06,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:06" (1/1) ... [2021-11-07 08:24:06,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:06" (1/1) ... [2021-11-07 08:24:06,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:24:06,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:24:06,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:24:06,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:24:06,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:06" (1/1) ... [2021-11-07 08:24:07,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:24:07,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:24:07,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:24:07,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:24:07,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:24:07,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:24:07,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:24:07,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:24:08,558 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:24:08,558 INFO L299 CfgBuilder]: Removed 123 assume(true) statements. [2021-11-07 08:24:08,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:24:08 BoogieIcfgContainer [2021-11-07 08:24:08,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:24:08,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:24:08,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:24:08,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:24:08,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:24:06" (1/3) ... [2021-11-07 08:24:08,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c65d989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:24:08, skipping insertion in model container [2021-11-07 08:24:08,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:24:06" (2/3) ... [2021-11-07 08:24:08,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c65d989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:24:08, skipping insertion in model container [2021-11-07 08:24:08,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:24:08" (3/3) ... [2021-11-07 08:24:08,574 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2021-11-07 08:24:08,581 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:24:08,581 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-11-07 08:24:08,645 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:24:08,654 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 [2021-11-07 08:24:08,654 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-11-07 08:24:08,683 INFO L276 IsEmpty]: Start isEmpty. Operand has 297 states, 273 states have (on average 1.7032967032967032) internal successors, (465), 296 states have internal predecessors, (465), 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) [2021-11-07 08:24:08,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 08:24:08,693 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:08,694 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] [2021-11-07 08:24:08,695 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:08,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:08,702 INFO L85 PathProgramCache]: Analyzing trace with hash 349506240, now seen corresponding path program 1 times [2021-11-07 08:24:08,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:08,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572684518] [2021-11-07 08:24:08,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:08,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:08,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:08,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:08,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572684518] [2021-11-07 08:24:08,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572684518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:08,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:08,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:24:08,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458184600] [2021-11-07 08:24:08,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:24:08,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:09,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:24:09,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:24:09,010 INFO L87 Difference]: Start difference. First operand has 297 states, 273 states have (on average 1.7032967032967032) internal successors, (465), 296 states have internal predecessors, (465), 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 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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) [2021-11-07 08:24:09,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:09,070 INFO L93 Difference]: Finished difference Result 578 states and 901 transitions. [2021-11-07 08:24:09,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:24:09,072 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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 33 [2021-11-07 08:24:09,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:09,148 INFO L225 Difference]: With dead ends: 578 [2021-11-07 08:24:09,159 INFO L226 Difference]: Without dead ends: 293 [2021-11-07 08:24:09,195 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:24:09,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-07 08:24:09,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2021-11-07 08:24:09,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 270 states have (on average 1.5888888888888888) internal successors, (429), 292 states have internal predecessors, (429), 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) [2021-11-07 08:24:09,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 429 transitions. [2021-11-07 08:24:09,289 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 429 transitions. Word has length 33 [2021-11-07 08:24:09,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:09,291 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 429 transitions. [2021-11-07 08:24:09,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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) [2021-11-07 08:24:09,292 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 429 transitions. [2021-11-07 08:24:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 08:24:09,296 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:09,297 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] [2021-11-07 08:24:09,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:24:09,298 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:09,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:09,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1047215368, now seen corresponding path program 1 times [2021-11-07 08:24:09,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:09,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263120555] [2021-11-07 08:24:09,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:09,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:09,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:09,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:09,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263120555] [2021-11-07 08:24:09,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263120555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:09,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:09,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:24:09,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058765691] [2021-11-07 08:24:09,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:24:09,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:09,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:24:09,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:24:09,509 INFO L87 Difference]: Start difference. First operand 293 states and 429 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2021-11-07 08:24:09,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:09,586 INFO L93 Difference]: Finished difference Result 572 states and 832 transitions. [2021-11-07 08:24:09,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:24:09,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 33 [2021-11-07 08:24:09,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:09,594 INFO L225 Difference]: With dead ends: 572 [2021-11-07 08:24:09,595 INFO L226 Difference]: Without dead ends: 293 [2021-11-07 08:24:09,599 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:24:09,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-07 08:24:09,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2021-11-07 08:24:09,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 270 states have (on average 1.5444444444444445) internal successors, (417), 292 states have internal predecessors, (417), 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) [2021-11-07 08:24:09,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 417 transitions. [2021-11-07 08:24:09,643 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 417 transitions. Word has length 33 [2021-11-07 08:24:09,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:09,644 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 417 transitions. [2021-11-07 08:24:09,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2021-11-07 08:24:09,644 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 417 transitions. [2021-11-07 08:24:09,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 08:24:09,650 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:09,651 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] [2021-11-07 08:24:09,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:24:09,653 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:09,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:09,661 INFO L85 PathProgramCache]: Analyzing trace with hash -600938825, now seen corresponding path program 1 times [2021-11-07 08:24:09,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:09,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547258243] [2021-11-07 08:24:09,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:09,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:09,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:09,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:09,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547258243] [2021-11-07 08:24:09,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547258243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:09,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:09,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:24:09,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896854072] [2021-11-07 08:24:09,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:24:09,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:09,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:24:09,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:24:09,893 INFO L87 Difference]: Start difference. First operand 293 states and 417 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-11-07 08:24:09,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:09,983 INFO L93 Difference]: Finished difference Result 603 states and 867 transitions. [2021-11-07 08:24:09,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:24:09,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2021-11-07 08:24:09,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:09,989 INFO L225 Difference]: With dead ends: 603 [2021-11-07 08:24:09,989 INFO L226 Difference]: Without dead ends: 327 [2021-11-07 08:24:09,990 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:24:09,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-11-07 08:24:10,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 269. [2021-11-07 08:24:10,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 250 states have (on average 1.524) internal successors, (381), 268 states have internal predecessors, (381), 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) [2021-11-07 08:24:10,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 381 transitions. [2021-11-07 08:24:10,013 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 381 transitions. Word has length 44 [2021-11-07 08:24:10,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:10,014 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 381 transitions. [2021-11-07 08:24:10,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-11-07 08:24:10,014 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 381 transitions. [2021-11-07 08:24:10,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 08:24:10,017 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:10,017 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] [2021-11-07 08:24:10,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:24:10,018 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:10,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:10,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1585020226, now seen corresponding path program 1 times [2021-11-07 08:24:10,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:10,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67504302] [2021-11-07 08:24:10,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:10,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:10,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:10,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:10,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67504302] [2021-11-07 08:24:10,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67504302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:10,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:10,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:24:10,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653330368] [2021-11-07 08:24:10,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:24:10,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:10,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:24:10,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:24:10,135 INFO L87 Difference]: Start difference. First operand 269 states and 381 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:24:10,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:10,178 INFO L93 Difference]: Finished difference Result 750 states and 1074 transitions. [2021-11-07 08:24:10,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:24:10,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-07 08:24:10,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:10,184 INFO L225 Difference]: With dead ends: 750 [2021-11-07 08:24:10,184 INFO L226 Difference]: Without dead ends: 498 [2021-11-07 08:24:10,185 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 [2021-11-07 08:24:10,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-11-07 08:24:10,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 304. [2021-11-07 08:24:10,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 285 states have (on average 1.5192982456140351) internal successors, (433), 303 states have internal predecessors, (433), 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) [2021-11-07 08:24:10,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 433 transitions. [2021-11-07 08:24:10,220 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 433 transitions. Word has length 53 [2021-11-07 08:24:10,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:10,222 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 433 transitions. [2021-11-07 08:24:10,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:24:10,223 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 433 transitions. [2021-11-07 08:24:10,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 08:24:10,235 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:10,236 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] [2021-11-07 08:24:10,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 08:24:10,236 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:10,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:10,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1396202520, now seen corresponding path program 1 times [2021-11-07 08:24:10,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:10,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769499840] [2021-11-07 08:24:10,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:10,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:10,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:10,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:10,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769499840] [2021-11-07 08:24:10,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769499840] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:10,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:10,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:24:10,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414434600] [2021-11-07 08:24:10,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:24:10,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:10,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:24:10,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:24:10,384 INFO L87 Difference]: Start difference. First operand 304 states and 433 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:24:10,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:10,430 INFO L93 Difference]: Finished difference Result 834 states and 1199 transitions. [2021-11-07 08:24:10,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:24:10,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-07 08:24:10,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:10,436 INFO L225 Difference]: With dead ends: 834 [2021-11-07 08:24:10,436 INFO L226 Difference]: Without dead ends: 547 [2021-11-07 08:24:10,438 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 [2021-11-07 08:24:10,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-11-07 08:24:10,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 329. [2021-11-07 08:24:10,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 310 states have (on average 1.5193548387096774) internal successors, (471), 328 states have internal predecessors, (471), 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) [2021-11-07 08:24:10,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 471 transitions. [2021-11-07 08:24:10,457 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 471 transitions. Word has length 54 [2021-11-07 08:24:10,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:10,458 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 471 transitions. [2021-11-07 08:24:10,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:24:10,458 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 471 transitions. [2021-11-07 08:24:10,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 08:24:10,460 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:10,460 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] [2021-11-07 08:24:10,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 08:24:10,460 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:10,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:10,461 INFO L85 PathProgramCache]: Analyzing trace with hash -716144150, now seen corresponding path program 1 times [2021-11-07 08:24:10,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:10,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761957049] [2021-11-07 08:24:10,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:10,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:10,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:10,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761957049] [2021-11-07 08:24:10,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761957049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:10,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:10,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:24:10,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839806688] [2021-11-07 08:24:10,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:24:10,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:10,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:24:10,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:24:10,629 INFO L87 Difference]: Start difference. First operand 329 states and 471 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:24:10,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:10,931 INFO L93 Difference]: Finished difference Result 1023 states and 1476 transitions. [2021-11-07 08:24:10,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:24:10,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-07 08:24:10,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:10,943 INFO L225 Difference]: With dead ends: 1023 [2021-11-07 08:24:10,943 INFO L226 Difference]: Without dead ends: 711 [2021-11-07 08:24:10,944 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:24:10,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2021-11-07 08:24:10,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 427. [2021-11-07 08:24:10,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 408 states have (on average 1.4901960784313726) internal successors, (608), 426 states have internal predecessors, (608), 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) [2021-11-07 08:24:10,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 608 transitions. [2021-11-07 08:24:10,977 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 608 transitions. Word has length 54 [2021-11-07 08:24:10,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:10,977 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 608 transitions. [2021-11-07 08:24:10,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:24:10,978 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 608 transitions. [2021-11-07 08:24:10,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 08:24:10,979 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:10,980 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] [2021-11-07 08:24:10,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 08:24:10,980 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:10,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:10,981 INFO L85 PathProgramCache]: Analyzing trace with hash 153208358, now seen corresponding path program 1 times [2021-11-07 08:24:10,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:10,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873016587] [2021-11-07 08:24:10,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:10,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:11,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:11,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:11,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873016587] [2021-11-07 08:24:11,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873016587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:11,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:11,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:24:11,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791250170] [2021-11-07 08:24:11,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:24:11,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:11,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:24:11,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:24:11,121 INFO L87 Difference]: Start difference. First operand 427 states and 608 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-11-07 08:24:11,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:11,406 INFO L93 Difference]: Finished difference Result 1027 states and 1476 transitions. [2021-11-07 08:24:11,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:24:11,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2021-11-07 08:24:11,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:11,413 INFO L225 Difference]: With dead ends: 1027 [2021-11-07 08:24:11,413 INFO L226 Difference]: Without dead ends: 715 [2021-11-07 08:24:11,415 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:24:11,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2021-11-07 08:24:11,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 435. [2021-11-07 08:24:11,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 416 states have (on average 1.4807692307692308) internal successors, (616), 434 states have internal predecessors, (616), 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) [2021-11-07 08:24:11,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 616 transitions. [2021-11-07 08:24:11,448 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 616 transitions. Word has length 55 [2021-11-07 08:24:11,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:11,449 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 616 transitions. [2021-11-07 08:24:11,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-11-07 08:24:11,449 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 616 transitions. [2021-11-07 08:24:11,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 08:24:11,451 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:11,451 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] [2021-11-07 08:24:11,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 08:24:11,452 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:11,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:11,452 INFO L85 PathProgramCache]: Analyzing trace with hash -748848364, now seen corresponding path program 1 times [2021-11-07 08:24:11,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:11,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441025172] [2021-11-07 08:24:11,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:11,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:11,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:11,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:11,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441025172] [2021-11-07 08:24:11,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441025172] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:11,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:11,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:24:11,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063625978] [2021-11-07 08:24:11,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:24:11,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:11,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:24:11,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:24:11,626 INFO L87 Difference]: Start difference. First operand 435 states and 616 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-11-07 08:24:11,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:11,896 INFO L93 Difference]: Finished difference Result 1027 states and 1468 transitions. [2021-11-07 08:24:11,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:24:11,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 57 [2021-11-07 08:24:11,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:11,903 INFO L225 Difference]: With dead ends: 1027 [2021-11-07 08:24:11,904 INFO L226 Difference]: Without dead ends: 715 [2021-11-07 08:24:11,906 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:24:11,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2021-11-07 08:24:11,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 435. [2021-11-07 08:24:11,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 416 states have (on average 1.4711538461538463) internal successors, (612), 434 states have internal predecessors, (612), 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) [2021-11-07 08:24:11,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 612 transitions. [2021-11-07 08:24:11,949 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 612 transitions. Word has length 57 [2021-11-07 08:24:11,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:11,950 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 612 transitions. [2021-11-07 08:24:11,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-11-07 08:24:11,951 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 612 transitions. [2021-11-07 08:24:11,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 08:24:11,952 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:11,953 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] [2021-11-07 08:24:11,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 08:24:11,954 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:11,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:11,954 INFO L85 PathProgramCache]: Analyzing trace with hash 2035065116, now seen corresponding path program 1 times [2021-11-07 08:24:11,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:11,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131833970] [2021-11-07 08:24:11,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:11,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:12,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:12,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:12,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131833970] [2021-11-07 08:24:12,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131833970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:12,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:12,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:24:12,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210001596] [2021-11-07 08:24:12,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:24:12,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:12,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:24:12,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:24:12,122 INFO L87 Difference]: Start difference. First operand 435 states and 612 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-07 08:24:12,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:12,189 INFO L93 Difference]: Finished difference Result 875 states and 1255 transitions. [2021-11-07 08:24:12,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:24:12,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2021-11-07 08:24:12,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:12,196 INFO L225 Difference]: With dead ends: 875 [2021-11-07 08:24:12,196 INFO L226 Difference]: Without dead ends: 563 [2021-11-07 08:24:12,197 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:24:12,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-11-07 08:24:12,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 430. [2021-11-07 08:24:12,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 412 states have (on average 1.4660194174757282) internal successors, (604), 429 states have internal predecessors, (604), 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) [2021-11-07 08:24:12,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 604 transitions. [2021-11-07 08:24:12,230 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 604 transitions. Word has length 58 [2021-11-07 08:24:12,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:12,231 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 604 transitions. [2021-11-07 08:24:12,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-07 08:24:12,231 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 604 transitions. [2021-11-07 08:24:12,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 08:24:12,232 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:12,233 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] [2021-11-07 08:24:12,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 08:24:12,233 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:12,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:12,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1833641356, now seen corresponding path program 1 times [2021-11-07 08:24:12,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:12,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225533114] [2021-11-07 08:24:12,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:12,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:12,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:12,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225533114] [2021-11-07 08:24:12,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225533114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:12,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:12,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:24:12,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633905057] [2021-11-07 08:24:12,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:24:12,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:12,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:24:12,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:24:12,360 INFO L87 Difference]: Start difference. First operand 430 states and 604 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-11-07 08:24:12,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:12,462 INFO L93 Difference]: Finished difference Result 874 states and 1254 transitions. [2021-11-07 08:24:12,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:24:12,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2021-11-07 08:24:12,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:12,468 INFO L225 Difference]: With dead ends: 874 [2021-11-07 08:24:12,468 INFO L226 Difference]: Without dead ends: 567 [2021-11-07 08:24:12,469 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:24:12,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-11-07 08:24:12,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 410. [2021-11-07 08:24:12,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 396 states have (on average 1.4444444444444444) internal successors, (572), 409 states have internal predecessors, (572), 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) [2021-11-07 08:24:12,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 572 transitions. [2021-11-07 08:24:12,502 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 572 transitions. Word has length 62 [2021-11-07 08:24:12,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:12,502 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 572 transitions. [2021-11-07 08:24:12,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-11-07 08:24:12,503 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 572 transitions. [2021-11-07 08:24:12,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 08:24:12,504 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:12,505 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] [2021-11-07 08:24:12,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 08:24:12,505 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:12,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:12,506 INFO L85 PathProgramCache]: Analyzing trace with hash -532758708, now seen corresponding path program 1 times [2021-11-07 08:24:12,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:12,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255001078] [2021-11-07 08:24:12,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:12,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:12,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:12,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255001078] [2021-11-07 08:24:12,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255001078] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:12,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:12,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:24:12,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64370553] [2021-11-07 08:24:12,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:24:12,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:12,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:24:12,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:24:12,584 INFO L87 Difference]: Start difference. First operand 410 states and 572 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-11-07 08:24:12,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:12,665 INFO L93 Difference]: Finished difference Result 842 states and 1198 transitions. [2021-11-07 08:24:12,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:24:12,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2021-11-07 08:24:12,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:12,670 INFO L225 Difference]: With dead ends: 842 [2021-11-07 08:24:12,670 INFO L226 Difference]: Without dead ends: 555 [2021-11-07 08:24:12,671 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:24:12,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-11-07 08:24:12,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 398. [2021-11-07 08:24:12,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 386 states have (on average 1.4352331606217616) internal successors, (554), 397 states have internal predecessors, (554), 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) [2021-11-07 08:24:12,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 554 transitions. [2021-11-07 08:24:12,715 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 554 transitions. Word has length 66 [2021-11-07 08:24:12,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:12,716 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 554 transitions. [2021-11-07 08:24:12,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-11-07 08:24:12,716 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 554 transitions. [2021-11-07 08:24:12,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 08:24:12,717 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:12,718 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] [2021-11-07 08:24:12,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 08:24:12,718 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:12,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:12,719 INFO L85 PathProgramCache]: Analyzing trace with hash 949999250, now seen corresponding path program 1 times [2021-11-07 08:24:12,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:12,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759880325] [2021-11-07 08:24:12,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:12,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:12,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:12,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:12,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759880325] [2021-11-07 08:24:12,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759880325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:12,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:12,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:24:12,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330696937] [2021-11-07 08:24:12,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:24:12,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:12,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:24:12,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:24:12,819 INFO L87 Difference]: Start difference. First operand 398 states and 554 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-11-07 08:24:12,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:12,919 INFO L93 Difference]: Finished difference Result 838 states and 1190 transitions. [2021-11-07 08:24:12,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:24:12,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2021-11-07 08:24:12,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:12,924 INFO L225 Difference]: With dead ends: 838 [2021-11-07 08:24:12,924 INFO L226 Difference]: Without dead ends: 563 [2021-11-07 08:24:12,925 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:24:12,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-11-07 08:24:12,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 378. [2021-11-07 08:24:12,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 370 states have (on average 1.4108108108108108) internal successors, (522), 377 states have internal predecessors, (522), 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) [2021-11-07 08:24:12,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 522 transitions. [2021-11-07 08:24:12,960 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 522 transitions. Word has length 67 [2021-11-07 08:24:12,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:12,961 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 522 transitions. [2021-11-07 08:24:12,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-11-07 08:24:12,961 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 522 transitions. [2021-11-07 08:24:12,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 08:24:12,962 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:12,963 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] [2021-11-07 08:24:12,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 08:24:12,963 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:12,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:12,964 INFO L85 PathProgramCache]: Analyzing trace with hash -448644128, now seen corresponding path program 1 times [2021-11-07 08:24:12,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:12,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828282772] [2021-11-07 08:24:12,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:12,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:13,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:13,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:13,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828282772] [2021-11-07 08:24:13,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828282772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:13,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:13,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:24:13,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874898034] [2021-11-07 08:24:13,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:24:13,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:13,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:24:13,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:24:13,120 INFO L87 Difference]: Start difference. First operand 378 states and 522 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:24:13,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:13,386 INFO L93 Difference]: Finished difference Result 1133 states and 1588 transitions. [2021-11-07 08:24:13,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 08:24:13,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-07 08:24:13,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:13,394 INFO L225 Difference]: With dead ends: 1133 [2021-11-07 08:24:13,394 INFO L226 Difference]: Without dead ends: 878 [2021-11-07 08:24:13,395 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:24:13,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2021-11-07 08:24:13,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 428. [2021-11-07 08:24:13,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 420 states have (on average 1.4047619047619047) internal successors, (590), 427 states have internal predecessors, (590), 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) [2021-11-07 08:24:13,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 590 transitions. [2021-11-07 08:24:13,457 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 590 transitions. Word has length 72 [2021-11-07 08:24:13,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:13,457 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 590 transitions. [2021-11-07 08:24:13,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:24:13,458 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 590 transitions. [2021-11-07 08:24:13,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 08:24:13,459 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:13,460 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] [2021-11-07 08:24:13,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 08:24:13,460 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:13,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:13,461 INFO L85 PathProgramCache]: Analyzing trace with hash 534764451, now seen corresponding path program 1 times [2021-11-07 08:24:13,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:13,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266129199] [2021-11-07 08:24:13,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:13,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:13,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:13,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:13,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266129199] [2021-11-07 08:24:13,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266129199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:13,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:13,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:24:13,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770468829] [2021-11-07 08:24:13,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:24:13,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:13,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:24:13,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:24:13,579 INFO L87 Difference]: Start difference. First operand 428 states and 590 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:24:13,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:13,651 INFO L93 Difference]: Finished difference Result 763 states and 1069 transitions. [2021-11-07 08:24:13,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:24:13,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 08:24:13,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:13,656 INFO L225 Difference]: With dead ends: 763 [2021-11-07 08:24:13,656 INFO L226 Difference]: Without dead ends: 508 [2021-11-07 08:24:13,658 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:24:13,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-11-07 08:24:13,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 424. [2021-11-07 08:24:13,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 417 states have (on average 1.3980815347721822) internal successors, (583), 423 states have internal predecessors, (583), 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) [2021-11-07 08:24:13,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 583 transitions. [2021-11-07 08:24:13,701 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 583 transitions. Word has length 73 [2021-11-07 08:24:13,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:13,702 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 583 transitions. [2021-11-07 08:24:13,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:24:13,702 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 583 transitions. [2021-11-07 08:24:13,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 08:24:13,703 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:13,703 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] [2021-11-07 08:24:13,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 08:24:13,704 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:13,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:13,705 INFO L85 PathProgramCache]: Analyzing trace with hash -344815767, now seen corresponding path program 1 times [2021-11-07 08:24:13,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:13,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351543565] [2021-11-07 08:24:13,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:13,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:13,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:13,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:13,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351543565] [2021-11-07 08:24:13,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351543565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:13,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:13,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:24:13,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353722854] [2021-11-07 08:24:13,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:24:13,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:13,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:24:13,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:24:13,812 INFO L87 Difference]: Start difference. First operand 424 states and 583 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:24:13,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:13,917 INFO L93 Difference]: Finished difference Result 862 states and 1206 transitions. [2021-11-07 08:24:13,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:24:13,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 08:24:13,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:13,923 INFO L225 Difference]: With dead ends: 862 [2021-11-07 08:24:13,923 INFO L226 Difference]: Without dead ends: 594 [2021-11-07 08:24:13,926 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:24:13,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-11-07 08:24:13,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 408. [2021-11-07 08:24:13,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 403 states have (on average 1.382133995037221) internal successors, (557), 407 states have internal predecessors, (557), 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) [2021-11-07 08:24:13,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 557 transitions. [2021-11-07 08:24:13,969 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 557 transitions. Word has length 73 [2021-11-07 08:24:13,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:13,970 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 557 transitions. [2021-11-07 08:24:13,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:24:13,970 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 557 transitions. [2021-11-07 08:24:13,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 08:24:13,971 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:13,972 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] [2021-11-07 08:24:13,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 08:24:13,972 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:13,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:13,975 INFO L85 PathProgramCache]: Analyzing trace with hash 317146558, now seen corresponding path program 1 times [2021-11-07 08:24:13,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:13,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094803966] [2021-11-07 08:24:13,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:13,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:14,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:14,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:14,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094803966] [2021-11-07 08:24:14,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094803966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:14,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:14,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:24:14,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636957650] [2021-11-07 08:24:14,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:24:14,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:14,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:24:14,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:24:14,158 INFO L87 Difference]: Start difference. First operand 408 states and 557 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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) [2021-11-07 08:24:14,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:14,595 INFO L93 Difference]: Finished difference Result 1404 states and 1944 transitions. [2021-11-07 08:24:14,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 08:24:14,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-07 08:24:14,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:14,604 INFO L225 Difference]: With dead ends: 1404 [2021-11-07 08:24:14,604 INFO L226 Difference]: Without dead ends: 1147 [2021-11-07 08:24:14,605 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-07 08:24:14,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2021-11-07 08:24:14,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 436. [2021-11-07 08:24:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 431 states have (on average 1.3665893271461718) internal successors, (589), 435 states have internal predecessors, (589), 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) [2021-11-07 08:24:14,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 589 transitions. [2021-11-07 08:24:14,662 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 589 transitions. Word has length 76 [2021-11-07 08:24:14,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:14,663 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 589 transitions. [2021-11-07 08:24:14,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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) [2021-11-07 08:24:14,663 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 589 transitions. [2021-11-07 08:24:14,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 08:24:14,664 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:14,665 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] [2021-11-07 08:24:14,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 08:24:14,665 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:14,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:14,666 INFO L85 PathProgramCache]: Analyzing trace with hash 917353494, now seen corresponding path program 1 times [2021-11-07 08:24:14,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:14,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613162988] [2021-11-07 08:24:14,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:14,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:14,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:14,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:14,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613162988] [2021-11-07 08:24:14,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613162988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:14,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:14,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:24:14,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565814799] [2021-11-07 08:24:14,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:24:14,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:14,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:24:14,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:24:14,761 INFO L87 Difference]: Start difference. First operand 436 states and 589 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2021-11-07 08:24:14,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:14,945 INFO L93 Difference]: Finished difference Result 1115 states and 1519 transitions. [2021-11-07 08:24:14,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:24:14,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-07 08:24:14,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:14,952 INFO L225 Difference]: With dead ends: 1115 [2021-11-07 08:24:14,952 INFO L226 Difference]: Without dead ends: 852 [2021-11-07 08:24:14,954 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 [2021-11-07 08:24:14,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2021-11-07 08:24:15,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 657. [2021-11-07 08:24:15,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 652 states have (on average 1.348159509202454) internal successors, (879), 656 states have internal predecessors, (879), 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) [2021-11-07 08:24:15,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 879 transitions. [2021-11-07 08:24:15,050 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 879 transitions. Word has length 76 [2021-11-07 08:24:15,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:15,051 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 879 transitions. [2021-11-07 08:24:15,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2021-11-07 08:24:15,051 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 879 transitions. [2021-11-07 08:24:15,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 08:24:15,057 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:15,057 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] [2021-11-07 08:24:15,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 08:24:15,058 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:15,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:15,059 INFO L85 PathProgramCache]: Analyzing trace with hash -480894404, now seen corresponding path program 1 times [2021-11-07 08:24:15,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:15,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176130145] [2021-11-07 08:24:15,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:15,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:15,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:15,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176130145] [2021-11-07 08:24:15,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176130145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:15,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:15,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:24:15,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978810577] [2021-11-07 08:24:15,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:24:15,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:15,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:24:15,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:24:15,173 INFO L87 Difference]: Start difference. First operand 657 states and 879 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2021-11-07 08:24:15,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:15,404 INFO L93 Difference]: Finished difference Result 1021 states and 1390 transitions. [2021-11-07 08:24:15,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:24:15,405 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 77 [2021-11-07 08:24:15,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:15,413 INFO L225 Difference]: With dead ends: 1021 [2021-11-07 08:24:15,413 INFO L226 Difference]: Without dead ends: 1019 [2021-11-07 08:24:15,414 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:24:15,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2021-11-07 08:24:15,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 659. [2021-11-07 08:24:15,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 654 states have (on average 1.3470948012232415) internal successors, (881), 658 states have internal predecessors, (881), 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) [2021-11-07 08:24:15,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 881 transitions. [2021-11-07 08:24:15,531 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 881 transitions. Word has length 77 [2021-11-07 08:24:15,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:15,532 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 881 transitions. [2021-11-07 08:24:15,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2021-11-07 08:24:15,532 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 881 transitions. [2021-11-07 08:24:15,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 08:24:15,534 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:15,535 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] [2021-11-07 08:24:15,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 08:24:15,536 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:15,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:15,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1699767669, now seen corresponding path program 1 times [2021-11-07 08:24:15,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:15,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742465439] [2021-11-07 08:24:15,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:15,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:15,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:15,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:15,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742465439] [2021-11-07 08:24:15,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742465439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:15,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:15,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:24:15,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102664063] [2021-11-07 08:24:15,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:24:15,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:15,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:24:15,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:24:15,719 INFO L87 Difference]: Start difference. First operand 659 states and 881 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2021-11-07 08:24:16,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:16,176 INFO L93 Difference]: Finished difference Result 1988 states and 2739 transitions. [2021-11-07 08:24:16,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 08:24:16,177 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 77 [2021-11-07 08:24:16,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:16,189 INFO L225 Difference]: With dead ends: 1988 [2021-11-07 08:24:16,190 INFO L226 Difference]: Without dead ends: 1608 [2021-11-07 08:24:16,191 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:24:16,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2021-11-07 08:24:16,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 647. [2021-11-07 08:24:16,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 642 states have (on average 1.3504672897196262) internal successors, (867), 646 states have internal predecessors, (867), 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) [2021-11-07 08:24:16,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 867 transitions. [2021-11-07 08:24:16,322 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 867 transitions. Word has length 77 [2021-11-07 08:24:16,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:16,323 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 867 transitions. [2021-11-07 08:24:16,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2021-11-07 08:24:16,323 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 867 transitions. [2021-11-07 08:24:16,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 08:24:16,325 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:16,325 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] [2021-11-07 08:24:16,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 08:24:16,326 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:16,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:16,327 INFO L85 PathProgramCache]: Analyzing trace with hash 239208754, now seen corresponding path program 1 times [2021-11-07 08:24:16,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:16,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184633245] [2021-11-07 08:24:16,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:16,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:16,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:16,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:16,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184633245] [2021-11-07 08:24:16,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184633245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:16,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:16,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:24:16,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031414311] [2021-11-07 08:24:16,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:24:16,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:16,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:24:16,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:24:16,441 INFO L87 Difference]: Start difference. First operand 647 states and 867 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2021-11-07 08:24:16,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:16,745 INFO L93 Difference]: Finished difference Result 1542 states and 2165 transitions. [2021-11-07 08:24:16,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 08:24:16,746 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-07 08:24:16,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:16,755 INFO L225 Difference]: With dead ends: 1542 [2021-11-07 08:24:16,756 INFO L226 Difference]: Without dead ends: 1162 [2021-11-07 08:24:16,757 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:24:16,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2021-11-07 08:24:16,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 653. [2021-11-07 08:24:16,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 648 states have (on average 1.3472222222222223) internal successors, (873), 652 states have internal predecessors, (873), 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) [2021-11-07 08:24:16,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 873 transitions. [2021-11-07 08:24:16,883 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 873 transitions. Word has length 78 [2021-11-07 08:24:16,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:16,883 INFO L470 AbstractCegarLoop]: Abstraction has 653 states and 873 transitions. [2021-11-07 08:24:16,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2021-11-07 08:24:16,884 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 873 transitions. [2021-11-07 08:24:16,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 08:24:16,885 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:16,886 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] [2021-11-07 08:24:16,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 08:24:16,888 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:16,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:16,889 INFO L85 PathProgramCache]: Analyzing trace with hash 341178161, now seen corresponding path program 1 times [2021-11-07 08:24:16,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:16,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931350378] [2021-11-07 08:24:16,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:16,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:16,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:16,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:16,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931350378] [2021-11-07 08:24:16,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931350378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:16,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:16,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:24:16,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771222570] [2021-11-07 08:24:16,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:24:16,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:16,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:24:16,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:24:16,953 INFO L87 Difference]: Start difference. First operand 653 states and 873 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2021-11-07 08:24:17,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:17,194 INFO L93 Difference]: Finished difference Result 1511 states and 2028 transitions. [2021-11-07 08:24:17,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:24:17,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-07 08:24:17,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:17,203 INFO L225 Difference]: With dead ends: 1511 [2021-11-07 08:24:17,203 INFO L226 Difference]: Without dead ends: 1107 [2021-11-07 08:24:17,204 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 [2021-11-07 08:24:17,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2021-11-07 08:24:17,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 851. [2021-11-07 08:24:17,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 846 states have (on average 1.339243498817967) internal successors, (1133), 850 states have internal predecessors, (1133), 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) [2021-11-07 08:24:17,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1133 transitions. [2021-11-07 08:24:17,332 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1133 transitions. Word has length 78 [2021-11-07 08:24:17,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:17,333 INFO L470 AbstractCegarLoop]: Abstraction has 851 states and 1133 transitions. [2021-11-07 08:24:17,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2021-11-07 08:24:17,334 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1133 transitions. [2021-11-07 08:24:17,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 08:24:17,335 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:17,336 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] [2021-11-07 08:24:17,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 08:24:17,336 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:17,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:17,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1360037685, now seen corresponding path program 1 times [2021-11-07 08:24:17,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:17,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184984627] [2021-11-07 08:24:17,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:17,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:17,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:17,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:17,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184984627] [2021-11-07 08:24:17,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184984627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:17,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:17,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:24:17,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430729024] [2021-11-07 08:24:17,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:24:17,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:17,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:24:17,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:24:17,487 INFO L87 Difference]: Start difference. First operand 851 states and 1133 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2021-11-07 08:24:18,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:18,238 INFO L93 Difference]: Finished difference Result 3248 states and 4372 transitions. [2021-11-07 08:24:18,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 08:24:18,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-07 08:24:18,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:18,260 INFO L225 Difference]: With dead ends: 3248 [2021-11-07 08:24:18,260 INFO L226 Difference]: Without dead ends: 2713 [2021-11-07 08:24:18,263 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-07 08:24:18,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2021-11-07 08:24:18,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 901. [2021-11-07 08:24:18,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 896 states have (on average 1.3359375) internal successors, (1197), 900 states have internal predecessors, (1197), 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) [2021-11-07 08:24:18,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1197 transitions. [2021-11-07 08:24:18,430 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1197 transitions. Word has length 78 [2021-11-07 08:24:18,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:18,431 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1197 transitions. [2021-11-07 08:24:18,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2021-11-07 08:24:18,431 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1197 transitions. [2021-11-07 08:24:18,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 08:24:18,433 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:18,433 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] [2021-11-07 08:24:18,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 08:24:18,434 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:18,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:18,435 INFO L85 PathProgramCache]: Analyzing trace with hash -504696615, now seen corresponding path program 1 times [2021-11-07 08:24:18,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:18,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168039938] [2021-11-07 08:24:18,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:18,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:18,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:18,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:18,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168039938] [2021-11-07 08:24:18,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168039938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:18,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:18,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:24:18,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863628649] [2021-11-07 08:24:18,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:24:18,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:18,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:24:18,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:24:18,512 INFO L87 Difference]: Start difference. First operand 901 states and 1197 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2021-11-07 08:24:18,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:18,853 INFO L93 Difference]: Finished difference Result 2319 states and 3089 transitions. [2021-11-07 08:24:18,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:24:18,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 79 [2021-11-07 08:24:18,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:18,866 INFO L225 Difference]: With dead ends: 2319 [2021-11-07 08:24:18,866 INFO L226 Difference]: Without dead ends: 1731 [2021-11-07 08:24:18,868 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 [2021-11-07 08:24:18,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2021-11-07 08:24:19,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1256. [2021-11-07 08:24:19,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 1251 states have (on average 1.3245403677058354) internal successors, (1657), 1255 states have internal predecessors, (1657), 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) [2021-11-07 08:24:19,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1657 transitions. [2021-11-07 08:24:19,085 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1657 transitions. Word has length 79 [2021-11-07 08:24:19,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:19,086 INFO L470 AbstractCegarLoop]: Abstraction has 1256 states and 1657 transitions. [2021-11-07 08:24:19,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2021-11-07 08:24:19,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1657 transitions. [2021-11-07 08:24:19,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 08:24:19,089 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:19,089 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] [2021-11-07 08:24:19,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 08:24:19,090 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:19,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:19,090 INFO L85 PathProgramCache]: Analyzing trace with hash -676572605, now seen corresponding path program 1 times [2021-11-07 08:24:19,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:19,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519965451] [2021-11-07 08:24:19,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:19,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:19,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:19,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:19,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519965451] [2021-11-07 08:24:19,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519965451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:19,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:19,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:24:19,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633725005] [2021-11-07 08:24:19,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:24:19,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:19,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:24:19,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:24:19,159 INFO L87 Difference]: Start difference. First operand 1256 states and 1657 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-11-07 08:24:19,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:19,570 INFO L93 Difference]: Finished difference Result 3064 states and 4044 transitions. [2021-11-07 08:24:19,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:24:19,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2021-11-07 08:24:19,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:19,586 INFO L225 Difference]: With dead ends: 3064 [2021-11-07 08:24:19,586 INFO L226 Difference]: Without dead ends: 2078 [2021-11-07 08:24:19,588 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 [2021-11-07 08:24:19,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2021-11-07 08:24:19,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 1258. [2021-11-07 08:24:19,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1253 states have (on average 1.324022346368715) internal successors, (1659), 1257 states have internal predecessors, (1659), 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) [2021-11-07 08:24:19,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1659 transitions. [2021-11-07 08:24:19,781 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1659 transitions. Word has length 80 [2021-11-07 08:24:19,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:19,782 INFO L470 AbstractCegarLoop]: Abstraction has 1258 states and 1659 transitions. [2021-11-07 08:24:19,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-11-07 08:24:19,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1659 transitions. [2021-11-07 08:24:19,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 08:24:19,785 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:19,785 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] [2021-11-07 08:24:19,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 08:24:19,786 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:19,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:19,786 INFO L85 PathProgramCache]: Analyzing trace with hash -659983772, now seen corresponding path program 1 times [2021-11-07 08:24:19,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:19,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131410483] [2021-11-07 08:24:19,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:19,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:19,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:19,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:19,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131410483] [2021-11-07 08:24:19,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131410483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:19,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:19,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:24:19,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980350100] [2021-11-07 08:24:19,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:24:19,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:19,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:24:19,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:24:19,889 INFO L87 Difference]: Start difference. First operand 1258 states and 1659 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2021-11-07 08:24:20,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:20,177 INFO L93 Difference]: Finished difference Result 2600 states and 3430 transitions. [2021-11-07 08:24:20,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:24:20,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 81 [2021-11-07 08:24:20,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:20,188 INFO L225 Difference]: With dead ends: 2600 [2021-11-07 08:24:20,189 INFO L226 Difference]: Without dead ends: 1418 [2021-11-07 08:24:20,191 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 [2021-11-07 08:24:20,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2021-11-07 08:24:20,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1055. [2021-11-07 08:24:20,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 1050 states have (on average 1.3209523809523809) internal successors, (1387), 1054 states have internal predecessors, (1387), 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) [2021-11-07 08:24:20,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1387 transitions. [2021-11-07 08:24:20,373 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1387 transitions. Word has length 81 [2021-11-07 08:24:20,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:20,374 INFO L470 AbstractCegarLoop]: Abstraction has 1055 states and 1387 transitions. [2021-11-07 08:24:20,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2021-11-07 08:24:20,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1387 transitions. [2021-11-07 08:24:20,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 08:24:20,376 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:20,377 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] [2021-11-07 08:24:20,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-07 08:24:20,377 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:20,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:20,378 INFO L85 PathProgramCache]: Analyzing trace with hash -63459148, now seen corresponding path program 1 times [2021-11-07 08:24:20,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:20,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067840894] [2021-11-07 08:24:20,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:20,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:20,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:20,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:20,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067840894] [2021-11-07 08:24:20,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067840894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:20,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:20,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:24:20,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727488622] [2021-11-07 08:24:20,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:24:20,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:20,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:24:20,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:24:20,441 INFO L87 Difference]: Start difference. First operand 1055 states and 1387 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-11-07 08:24:20,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:20,852 INFO L93 Difference]: Finished difference Result 2491 states and 3293 transitions. [2021-11-07 08:24:20,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:24:20,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2021-11-07 08:24:20,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:20,864 INFO L225 Difference]: With dead ends: 2491 [2021-11-07 08:24:20,864 INFO L226 Difference]: Without dead ends: 1585 [2021-11-07 08:24:20,867 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 [2021-11-07 08:24:20,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2021-11-07 08:24:21,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1061. [2021-11-07 08:24:21,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1056 states have (on average 1.3191287878787878) internal successors, (1393), 1060 states have internal predecessors, (1393), 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) [2021-11-07 08:24:21,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1393 transitions. [2021-11-07 08:24:21,044 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1393 transitions. Word has length 82 [2021-11-07 08:24:21,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:21,044 INFO L470 AbstractCegarLoop]: Abstraction has 1061 states and 1393 transitions. [2021-11-07 08:24:21,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-11-07 08:24:21,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1393 transitions. [2021-11-07 08:24:21,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 08:24:21,047 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:21,047 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:24:21,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-07 08:24:21,048 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:21,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:21,048 INFO L85 PathProgramCache]: Analyzing trace with hash -753963456, now seen corresponding path program 1 times [2021-11-07 08:24:21,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:21,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017136834] [2021-11-07 08:24:21,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:21,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:21,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:21,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:21,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017136834] [2021-11-07 08:24:21,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017136834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:21,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:21,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:24:21,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52073324] [2021-11-07 08:24:21,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:24:21,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:21,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:24:21,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:24:21,138 INFO L87 Difference]: Start difference. First operand 1061 states and 1393 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2021-11-07 08:24:21,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:21,440 INFO L93 Difference]: Finished difference Result 2440 states and 3214 transitions. [2021-11-07 08:24:21,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:24:21,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 82 [2021-11-07 08:24:21,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:21,462 INFO L225 Difference]: With dead ends: 2440 [2021-11-07 08:24:21,469 INFO L226 Difference]: Without dead ends: 1478 [2021-11-07 08:24:21,472 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 [2021-11-07 08:24:21,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2021-11-07 08:24:21,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1001. [2021-11-07 08:24:21,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 996 states have (on average 1.3142570281124497) internal successors, (1309), 1000 states have internal predecessors, (1309), 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) [2021-11-07 08:24:21,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1309 transitions. [2021-11-07 08:24:21,643 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1309 transitions. Word has length 82 [2021-11-07 08:24:21,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:21,644 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1309 transitions. [2021-11-07 08:24:21,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2021-11-07 08:24:21,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1309 transitions. [2021-11-07 08:24:21,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-07 08:24:21,650 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:21,651 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:24:21,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-07 08:24:21,652 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:21,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:21,652 INFO L85 PathProgramCache]: Analyzing trace with hash -508619245, now seen corresponding path program 1 times [2021-11-07 08:24:21,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:21,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794097362] [2021-11-07 08:24:21,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:21,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:21,866 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:21,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:21,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794097362] [2021-11-07 08:24:21,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794097362] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:24:21,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732391392] [2021-11-07 08:24:21,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:21,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:24:21,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:24:21,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:24:21,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 08:24:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:22,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 08:24:22,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:24:22,805 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 08:24:22,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732391392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:22,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:24:22,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2021-11-07 08:24:22,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560518535] [2021-11-07 08:24:22,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:24:22,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:22,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:24:22,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-11-07 08:24:22,809 INFO L87 Difference]: Start difference. First operand 1001 states and 1309 transitions. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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) [2021-11-07 08:24:23,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:23,421 INFO L93 Difference]: Finished difference Result 2598 states and 3526 transitions. [2021-11-07 08:24:23,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 08:24:23,421 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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 128 [2021-11-07 08:24:23,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:23,430 INFO L225 Difference]: With dead ends: 2598 [2021-11-07 08:24:23,430 INFO L226 Difference]: Without dead ends: 1784 [2021-11-07 08:24:23,433 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-07 08:24:23,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2021-11-07 08:24:23,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1001. [2021-11-07 08:24:23,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 996 states have (on average 1.3132530120481927) internal successors, (1308), 1000 states have internal predecessors, (1308), 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) [2021-11-07 08:24:23,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1308 transitions. [2021-11-07 08:24:23,639 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1308 transitions. Word has length 128 [2021-11-07 08:24:23,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:23,640 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1308 transitions. [2021-11-07 08:24:23,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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) [2021-11-07 08:24:23,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1308 transitions. [2021-11-07 08:24:23,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-07 08:24:23,644 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:23,644 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:24:23,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:24:23,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-07 08:24:23,871 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:23,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:23,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1477169230, now seen corresponding path program 1 times [2021-11-07 08:24:23,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:23,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265137082] [2021-11-07 08:24:23,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:23,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:24,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:24,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265137082] [2021-11-07 08:24:24,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265137082] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:24:24,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951652817] [2021-11-07 08:24:24,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:24,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:24:24,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:24:24,114 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:24:24,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 08:24:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:24,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 08:24:24,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:24:25,076 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:25,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951652817] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:24:25,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:24:25,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-07 08:24:25,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955092506] [2021-11-07 08:24:25,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 08:24:25,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:25,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 08:24:25,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-11-07 08:24:25,080 INFO L87 Difference]: Start difference. First operand 1001 states and 1308 transitions. Second operand has 13 states, 13 states have (on average 19.846153846153847) internal successors, (258), 13 states have internal predecessors, (258), 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) [2021-11-07 08:24:39,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:39,964 INFO L93 Difference]: Finished difference Result 16835 states and 22497 transitions. [2021-11-07 08:24:39,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2021-11-07 08:24:39,965 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 19.846153846153847) internal successors, (258), 13 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-07 08:24:39,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:40,032 INFO L225 Difference]: With dead ends: 16835 [2021-11-07 08:24:40,033 INFO L226 Difference]: Without dead ends: 16027 [2021-11-07 08:24:40,079 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28995 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=8289, Invalid=55467, Unknown=0, NotChecked=0, Total=63756 [2021-11-07 08:24:40,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16027 states. [2021-11-07 08:24:40,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16027 to 2722. [2021-11-07 08:24:40,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2722 states, 2717 states have (on average 1.3106367316893632) internal successors, (3561), 2721 states have internal predecessors, (3561), 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) [2021-11-07 08:24:40,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2722 states to 2722 states and 3561 transitions. [2021-11-07 08:24:40,903 INFO L78 Accepts]: Start accepts. Automaton has 2722 states and 3561 transitions. Word has length 132 [2021-11-07 08:24:40,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:40,904 INFO L470 AbstractCegarLoop]: Abstraction has 2722 states and 3561 transitions. [2021-11-07 08:24:40,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.846153846153847) internal successors, (258), 13 states have internal predecessors, (258), 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) [2021-11-07 08:24:40,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2722 states and 3561 transitions. [2021-11-07 08:24:40,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 08:24:40,913 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:40,913 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:24:40,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 08:24:41,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-07 08:24:41,139 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:41,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:41,140 INFO L85 PathProgramCache]: Analyzing trace with hash 199325748, now seen corresponding path program 1 times [2021-11-07 08:24:41,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:41,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493792447] [2021-11-07 08:24:41,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:41,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:41,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:41,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493792447] [2021-11-07 08:24:41,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493792447] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:24:41,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673589443] [2021-11-07 08:24:41,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:41,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:24:41,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:24:41,375 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:24:41,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 08:24:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:41,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 08:24:41,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:24:42,523 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:42,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673589443] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:24:42,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:24:42,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2021-11-07 08:24:42,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411893182] [2021-11-07 08:24:42,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:24:42,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:42,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:24:42,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:24:42,527 INFO L87 Difference]: Start difference. First operand 2722 states and 3561 transitions. Second operand has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:24:44,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:44,833 INFO L93 Difference]: Finished difference Result 9813 states and 13401 transitions. [2021-11-07 08:24:44,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 08:24:44,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-07 08:24:44,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:44,855 INFO L225 Difference]: With dead ends: 9813 [2021-11-07 08:24:44,855 INFO L226 Difference]: Without dead ends: 7318 [2021-11-07 08:24:44,861 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2021-11-07 08:24:44,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7318 states. [2021-11-07 08:24:45,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7318 to 2327. [2021-11-07 08:24:45,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2327 states, 2322 states have (on average 1.313953488372093) internal successors, (3051), 2326 states have internal predecessors, (3051), 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) [2021-11-07 08:24:45,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2327 states to 2327 states and 3051 transitions. [2021-11-07 08:24:45,312 INFO L78 Accepts]: Start accepts. Automaton has 2327 states and 3051 transitions. Word has length 133 [2021-11-07 08:24:45,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:45,312 INFO L470 AbstractCegarLoop]: Abstraction has 2327 states and 3051 transitions. [2021-11-07 08:24:45,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:24:45,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2327 states and 3051 transitions. [2021-11-07 08:24:45,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-07 08:24:45,320 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:45,321 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:24:45,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 08:24:45,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:24:45,547 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:45,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:45,548 INFO L85 PathProgramCache]: Analyzing trace with hash 99406826, now seen corresponding path program 1 times [2021-11-07 08:24:45,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:45,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557058853] [2021-11-07 08:24:45,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:45,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:45,719 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 08:24:45,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:45,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557058853] [2021-11-07 08:24:45,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557058853] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:45,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:45,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:24:45,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227508548] [2021-11-07 08:24:45,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:24:45,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:45,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:24:45,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:24:45,722 INFO L87 Difference]: Start difference. First operand 2327 states and 3051 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2021-11-07 08:24:48,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:48,224 INFO L93 Difference]: Finished difference Result 13295 states and 17793 transitions. [2021-11-07 08:24:48,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 08:24:48,225 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-07 08:24:48,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:48,254 INFO L225 Difference]: With dead ends: 13295 [2021-11-07 08:24:48,254 INFO L226 Difference]: Without dead ends: 11215 [2021-11-07 08:24:48,261 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-11-07 08:24:48,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11215 states. [2021-11-07 08:24:48,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11215 to 2747. [2021-11-07 08:24:48,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2747 states, 2742 states have (on average 1.2939460247994166) internal successors, (3548), 2746 states have internal predecessors, (3548), 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) [2021-11-07 08:24:48,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2747 states to 2747 states and 3548 transitions. [2021-11-07 08:24:48,881 INFO L78 Accepts]: Start accepts. Automaton has 2747 states and 3548 transitions. Word has length 134 [2021-11-07 08:24:48,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:48,882 INFO L470 AbstractCegarLoop]: Abstraction has 2747 states and 3548 transitions. [2021-11-07 08:24:48,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2021-11-07 08:24:48,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2747 states and 3548 transitions. [2021-11-07 08:24:48,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-07 08:24:48,892 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:48,892 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:24:48,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-07 08:24:48,893 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:48,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:48,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1092691825, now seen corresponding path program 1 times [2021-11-07 08:24:48,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:48,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458193723] [2021-11-07 08:24:48,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:48,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:49,061 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:49,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:49,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458193723] [2021-11-07 08:24:49,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458193723] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:24:49,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398444008] [2021-11-07 08:24:49,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:49,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:24:49,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:24:49,071 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:24:49,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 08:24:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:49,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 08:24:49,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:24:49,940 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-07 08:24:49,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398444008] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:24:49,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:24:49,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-11-07 08:24:49,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915925940] [2021-11-07 08:24:49,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 08:24:49,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:49,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 08:24:49,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:24:49,944 INFO L87 Difference]: Start difference. First operand 2747 states and 3548 transitions. Second operand has 11 states, 11 states have (on average 21.09090909090909) internal successors, (232), 11 states have internal predecessors, (232), 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) [2021-11-07 08:24:52,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:52,548 INFO L93 Difference]: Finished difference Result 5998 states and 7876 transitions. [2021-11-07 08:24:52,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-07 08:24:52,549 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 21.09090909090909) internal successors, (232), 11 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2021-11-07 08:24:52,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:52,558 INFO L225 Difference]: With dead ends: 5998 [2021-11-07 08:24:52,559 INFO L226 Difference]: Without dead ends: 3346 [2021-11-07 08:24:52,565 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=525, Invalid=1545, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 08:24:52,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3346 states. [2021-11-07 08:24:52,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3346 to 1880. [2021-11-07 08:24:52,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1875 states have (on average 1.2816) internal successors, (2403), 1879 states have internal predecessors, (2403), 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) [2021-11-07 08:24:52,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 2403 transitions. [2021-11-07 08:24:52,905 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 2403 transitions. Word has length 136 [2021-11-07 08:24:52,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:52,906 INFO L470 AbstractCegarLoop]: Abstraction has 1880 states and 2403 transitions. [2021-11-07 08:24:52,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.09090909090909) internal successors, (232), 11 states have internal predecessors, (232), 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) [2021-11-07 08:24:52,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 2403 transitions. [2021-11-07 08:24:52,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-07 08:24:52,912 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:52,912 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:24:52,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 08:24:53,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-11-07 08:24:53,139 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:53,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:53,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1966931344, now seen corresponding path program 1 times [2021-11-07 08:24:53,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:53,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509415407] [2021-11-07 08:24:53,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:53,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:53,405 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:53,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:53,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509415407] [2021-11-07 08:24:53,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509415407] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:24:53,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210423425] [2021-11-07 08:24:53,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:53,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:24:53,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:24:53,408 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:24:53,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 08:24:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:53,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 08:24:53,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:24:54,311 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 08:24:54,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210423425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:54,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:24:54,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2021-11-07 08:24:54,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922626357] [2021-11-07 08:24:54,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:24:54,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:54,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:24:54,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-11-07 08:24:54,321 INFO L87 Difference]: Start difference. First operand 1880 states and 2403 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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) [2021-11-07 08:24:55,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:55,552 INFO L93 Difference]: Finished difference Result 5962 states and 7867 transitions. [2021-11-07 08:24:55,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 08:24:55,553 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2021-11-07 08:24:55,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:55,564 INFO L225 Difference]: With dead ends: 5962 [2021-11-07 08:24:55,564 INFO L226 Difference]: Without dead ends: 4237 [2021-11-07 08:24:55,569 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-11-07 08:24:55,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4237 states. [2021-11-07 08:24:56,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4237 to 1880. [2021-11-07 08:24:56,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1875 states have (on average 1.28) internal successors, (2400), 1879 states have internal predecessors, (2400), 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) [2021-11-07 08:24:56,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 2400 transitions. [2021-11-07 08:24:56,013 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 2400 transitions. Word has length 136 [2021-11-07 08:24:56,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:56,014 INFO L470 AbstractCegarLoop]: Abstraction has 1880 states and 2400 transitions. [2021-11-07 08:24:56,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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) [2021-11-07 08:24:56,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 2400 transitions. [2021-11-07 08:24:56,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 08:24:56,020 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:56,020 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:24:56,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 08:24:56,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:24:56,235 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:56,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:56,236 INFO L85 PathProgramCache]: Analyzing trace with hash 2092133653, now seen corresponding path program 1 times [2021-11-07 08:24:56,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:56,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885882439] [2021-11-07 08:24:56,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:56,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:56,512 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:56,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:56,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885882439] [2021-11-07 08:24:56,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885882439] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:24:56,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306737670] [2021-11-07 08:24:56,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:56,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:24:56,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:24:56,519 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:24:56,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 08:24:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:57,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 08:24:57,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:24:57,594 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 08:24:57,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306737670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:57,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:24:57,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2021-11-07 08:24:57,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255751577] [2021-11-07 08:24:57,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:24:57,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:57,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:24:57,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-11-07 08:24:57,597 INFO L87 Difference]: Start difference. First operand 1880 states and 2400 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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) [2021-11-07 08:24:58,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:58,443 INFO L93 Difference]: Finished difference Result 5402 states and 7038 transitions. [2021-11-07 08:24:58,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 08:24:58,444 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-07 08:24:58,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:58,452 INFO L225 Difference]: With dead ends: 5402 [2021-11-07 08:24:58,452 INFO L226 Difference]: Without dead ends: 3677 [2021-11-07 08:24:58,456 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-11-07 08:24:58,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2021-11-07 08:24:58,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 1880. [2021-11-07 08:24:58,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1875 states have (on average 1.2784) internal successors, (2397), 1879 states have internal predecessors, (2397), 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) [2021-11-07 08:24:58,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 2397 transitions. [2021-11-07 08:24:58,903 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 2397 transitions. Word has length 140 [2021-11-07 08:24:58,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:58,903 INFO L470 AbstractCegarLoop]: Abstraction has 1880 states and 2397 transitions. [2021-11-07 08:24:58,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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) [2021-11-07 08:24:58,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 2397 transitions. [2021-11-07 08:24:58,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-07 08:24:58,909 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:58,909 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:24:58,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-07 08:24:59,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-07 08:24:59,123 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:24:59,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:59,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1655490771, now seen corresponding path program 1 times [2021-11-07 08:24:59,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:59,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769021298] [2021-11-07 08:24:59,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:59,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:59,401 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:59,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:59,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769021298] [2021-11-07 08:24:59,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769021298] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:24:59,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614443879] [2021-11-07 08:24:59,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:59,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:24:59,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:24:59,407 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:24:59,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 08:24:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:59,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 08:24:59,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:01,485 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:01,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614443879] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:25:01,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:25:01,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2021-11-07 08:25:01,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507155565] [2021-11-07 08:25:01,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 08:25:01,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:01,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 08:25:01,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-07 08:25:01,489 INFO L87 Difference]: Start difference. First operand 1880 states and 2397 transitions. Second operand has 15 states, 15 states have (on average 16.333333333333332) internal successors, (245), 14 states have internal predecessors, (245), 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) [2021-11-07 08:25:04,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:04,976 INFO L93 Difference]: Finished difference Result 5855 states and 7539 transitions. [2021-11-07 08:25:04,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-07 08:25:04,976 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 16.333333333333332) internal successors, (245), 14 states have internal predecessors, (245), 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 143 [2021-11-07 08:25:04,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:25:04,981 INFO L225 Difference]: With dead ends: 5855 [2021-11-07 08:25:04,982 INFO L226 Difference]: Without dead ends: 4170 [2021-11-07 08:25:04,985 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1627 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=942, Invalid=4314, Unknown=0, NotChecked=0, Total=5256 [2021-11-07 08:25:04,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2021-11-07 08:25:05,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 2118. [2021-11-07 08:25:05,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2118 states, 2113 states have (on average 1.2688121154756271) internal successors, (2681), 2117 states have internal predecessors, (2681), 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) [2021-11-07 08:25:05,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 2681 transitions. [2021-11-07 08:25:05,537 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 2681 transitions. Word has length 143 [2021-11-07 08:25:05,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:25:05,538 INFO L470 AbstractCegarLoop]: Abstraction has 2118 states and 2681 transitions. [2021-11-07 08:25:05,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 16.333333333333332) internal successors, (245), 14 states have internal predecessors, (245), 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) [2021-11-07 08:25:05,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 2681 transitions. [2021-11-07 08:25:05,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-07 08:25:05,544 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:25:05,544 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:05,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:05,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-07 08:25:05,771 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:25:05,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:05,772 INFO L85 PathProgramCache]: Analyzing trace with hash 783931677, now seen corresponding path program 1 times [2021-11-07 08:25:05,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:05,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787321070] [2021-11-07 08:25:05,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:05,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:05,904 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-07 08:25:05,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:05,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787321070] [2021-11-07 08:25:05,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787321070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:25:05,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:25:05,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:25:05,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040520180] [2021-11-07 08:25:05,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:25:05,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:05,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:25:05,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:25:05,908 INFO L87 Difference]: Start difference. First operand 2118 states and 2681 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 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) [2021-11-07 08:25:06,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:06,495 INFO L93 Difference]: Finished difference Result 3974 states and 5071 transitions. [2021-11-07 08:25:06,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:25:06,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 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 144 [2021-11-07 08:25:06,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:25:06,499 INFO L225 Difference]: With dead ends: 3974 [2021-11-07 08:25:06,500 INFO L226 Difference]: Without dead ends: 1990 [2021-11-07 08:25:06,503 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:25:06,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2021-11-07 08:25:07,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1990. [2021-11-07 08:25:07,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1990 states, 1985 states have (on average 1.2730478589420655) internal successors, (2527), 1989 states have internal predecessors, (2527), 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) [2021-11-07 08:25:07,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 2527 transitions. [2021-11-07 08:25:07,150 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 2527 transitions. Word has length 144 [2021-11-07 08:25:07,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:25:07,152 INFO L470 AbstractCegarLoop]: Abstraction has 1990 states and 2527 transitions. [2021-11-07 08:25:07,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 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) [2021-11-07 08:25:07,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 2527 transitions. [2021-11-07 08:25:07,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-07 08:25:07,158 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:25:07,158 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:07,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-07 08:25:07,159 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:25:07,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:07,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1816010656, now seen corresponding path program 1 times [2021-11-07 08:25:07,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:07,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147894889] [2021-11-07 08:25:07,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:07,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 08:25:07,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:07,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147894889] [2021-11-07 08:25:07,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147894889] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:25:07,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:25:07,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:25:07,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868629072] [2021-11-07 08:25:07,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:25:07,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:07,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:25:07,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:25:07,282 INFO L87 Difference]: Start difference. First operand 1990 states and 2527 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:09,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:09,055 INFO L93 Difference]: Finished difference Result 8573 states and 11196 transitions. [2021-11-07 08:25:09,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 08:25:09,056 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-07 08:25:09,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:25:09,067 INFO L225 Difference]: With dead ends: 8573 [2021-11-07 08:25:09,067 INFO L226 Difference]: Without dead ends: 6778 [2021-11-07 08:25:09,071 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-11-07 08:25:09,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6778 states. [2021-11-07 08:25:09,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6778 to 2343. [2021-11-07 08:25:09,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2343 states, 2338 states have (on average 1.257912745936698) internal successors, (2941), 2342 states have internal predecessors, (2941), 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) [2021-11-07 08:25:09,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2343 states to 2343 states and 2941 transitions. [2021-11-07 08:25:09,635 INFO L78 Accepts]: Start accepts. Automaton has 2343 states and 2941 transitions. Word has length 144 [2021-11-07 08:25:09,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:25:09,635 INFO L470 AbstractCegarLoop]: Abstraction has 2343 states and 2941 transitions. [2021-11-07 08:25:09,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:09,636 INFO L276 IsEmpty]: Start isEmpty. Operand 2343 states and 2941 transitions. [2021-11-07 08:25:09,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-07 08:25:09,641 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:25:09,641 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:09,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-07 08:25:09,642 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:25:09,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:09,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1158709565, now seen corresponding path program 1 times [2021-11-07 08:25:09,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:09,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499740750] [2021-11-07 08:25:09,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:09,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:09,877 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:09,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:09,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499740750] [2021-11-07 08:25:09,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499740750] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:25:09,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591074066] [2021-11-07 08:25:09,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:09,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:25:09,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:09,883 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:25:09,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 08:25:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:10,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 08:25:10,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:11,045 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 34 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:11,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591074066] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:25:11,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:25:11,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2021-11-07 08:25:11,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777086087] [2021-11-07 08:25:11,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 08:25:11,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:11,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 08:25:11,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-11-07 08:25:11,049 INFO L87 Difference]: Start difference. First operand 2343 states and 2941 transitions. Second operand has 17 states, 17 states have (on average 15.529411764705882) internal successors, (264), 17 states have internal predecessors, (264), 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) [2021-11-07 08:25:20,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:20,282 INFO L93 Difference]: Finished difference Result 15638 states and 19733 transitions. [2021-11-07 08:25:20,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2021-11-07 08:25:20,283 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 15.529411764705882) internal successors, (264), 17 states have internal predecessors, (264), 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 145 [2021-11-07 08:25:20,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:25:20,304 INFO L225 Difference]: With dead ends: 15638 [2021-11-07 08:25:20,304 INFO L226 Difference]: Without dead ends: 13490 [2021-11-07 08:25:20,314 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11702 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3629, Invalid=26821, Unknown=0, NotChecked=0, Total=30450 [2021-11-07 08:25:20,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13490 states. [2021-11-07 08:25:21,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13490 to 4497. [2021-11-07 08:25:21,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4497 states, 4492 states have (on average 1.2546749777382011) internal successors, (5636), 4496 states have internal predecessors, (5636), 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) [2021-11-07 08:25:21,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4497 states to 4497 states and 5636 transitions. [2021-11-07 08:25:21,275 INFO L78 Accepts]: Start accepts. Automaton has 4497 states and 5636 transitions. Word has length 145 [2021-11-07 08:25:21,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:25:21,276 INFO L470 AbstractCegarLoop]: Abstraction has 4497 states and 5636 transitions. [2021-11-07 08:25:21,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.529411764705882) internal successors, (264), 17 states have internal predecessors, (264), 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) [2021-11-07 08:25:21,277 INFO L276 IsEmpty]: Start isEmpty. Operand 4497 states and 5636 transitions. [2021-11-07 08:25:21,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-07 08:25:21,287 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:25:21,288 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:21,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-07 08:25:21,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:25:21,515 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:25:21,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:21,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1349160761, now seen corresponding path program 1 times [2021-11-07 08:25:21,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:21,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222268430] [2021-11-07 08:25:21,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:21,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:21,660 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 08:25:21,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:21,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222268430] [2021-11-07 08:25:21,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222268430] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:25:21,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:25:21,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:25:21,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358578387] [2021-11-07 08:25:21,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:25:21,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:21,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:25:21,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:25:21,663 INFO L87 Difference]: Start difference. First operand 4497 states and 5636 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2021-11-07 08:25:22,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:22,595 INFO L93 Difference]: Finished difference Result 8246 states and 10387 transitions. [2021-11-07 08:25:22,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:25:22,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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 145 [2021-11-07 08:25:22,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:25:22,601 INFO L225 Difference]: With dead ends: 8246 [2021-11-07 08:25:22,602 INFO L226 Difference]: Without dead ends: 3932 [2021-11-07 08:25:22,607 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:25:22,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3932 states. [2021-11-07 08:25:23,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3932 to 3916. [2021-11-07 08:25:23,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3916 states, 3911 states have (on average 1.2518537458450525) internal successors, (4896), 3915 states have internal predecessors, (4896), 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) [2021-11-07 08:25:23,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3916 states to 3916 states and 4896 transitions. [2021-11-07 08:25:23,462 INFO L78 Accepts]: Start accepts. Automaton has 3916 states and 4896 transitions. Word has length 145 [2021-11-07 08:25:23,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:25:23,462 INFO L470 AbstractCegarLoop]: Abstraction has 3916 states and 4896 transitions. [2021-11-07 08:25:23,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2021-11-07 08:25:23,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3916 states and 4896 transitions. [2021-11-07 08:25:23,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-07 08:25:23,471 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:25:23,472 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:23,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-07 08:25:23,472 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:25:23,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:23,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1375736921, now seen corresponding path program 1 times [2021-11-07 08:25:23,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:23,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330340372] [2021-11-07 08:25:23,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:23,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:23,593 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:23,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:23,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330340372] [2021-11-07 08:25:23,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330340372] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:25:23,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326101732] [2021-11-07 08:25:23,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:23,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:25:23,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:23,596 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:25:23,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 08:25:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:24,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 08:25:24,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:24,735 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:24,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326101732] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:25:24,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:25:24,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-11-07 08:25:24,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357946897] [2021-11-07 08:25:24,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:25:24,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:24,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:25:24,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:25:24,739 INFO L87 Difference]: Start difference. First operand 3916 states and 4896 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 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) [2021-11-07 08:25:27,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:27,339 INFO L93 Difference]: Finished difference Result 14888 states and 19007 transitions. [2021-11-07 08:25:27,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 08:25:27,340 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 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 145 [2021-11-07 08:25:27,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:25:27,352 INFO L225 Difference]: With dead ends: 14888 [2021-11-07 08:25:27,352 INFO L226 Difference]: Without dead ends: 11271 [2021-11-07 08:25:27,358 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-07 08:25:27,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11271 states. [2021-11-07 08:25:29,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11271 to 7260. [2021-11-07 08:25:29,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7260 states, 7255 states have (on average 1.2501722949689869) internal successors, (9070), 7259 states have internal predecessors, (9070), 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) [2021-11-07 08:25:29,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7260 states to 7260 states and 9070 transitions. [2021-11-07 08:25:29,128 INFO L78 Accepts]: Start accepts. Automaton has 7260 states and 9070 transitions. Word has length 145 [2021-11-07 08:25:29,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:25:29,129 INFO L470 AbstractCegarLoop]: Abstraction has 7260 states and 9070 transitions. [2021-11-07 08:25:29,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 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) [2021-11-07 08:25:29,129 INFO L276 IsEmpty]: Start isEmpty. Operand 7260 states and 9070 transitions. [2021-11-07 08:25:29,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-07 08:25:29,138 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:25:29,138 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:29,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:29,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-07 08:25:29,363 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:25:29,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:29,364 INFO L85 PathProgramCache]: Analyzing trace with hash -415965278, now seen corresponding path program 1 times [2021-11-07 08:25:29,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:29,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622881678] [2021-11-07 08:25:29,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:29,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:29,663 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 45 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:29,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:29,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622881678] [2021-11-07 08:25:29,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622881678] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:25:29,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248961437] [2021-11-07 08:25:29,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:29,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:25:29,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:29,666 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:25:29,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 08:25:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:30,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 08:25:30,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:30,878 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 08:25:30,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248961437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:25:30,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:25:30,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2021-11-07 08:25:30,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500870575] [2021-11-07 08:25:30,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:25:30,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:30,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:25:30,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-11-07 08:25:30,881 INFO L87 Difference]: Start difference. First operand 7260 states and 9070 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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) [2021-11-07 08:25:33,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:33,470 INFO L93 Difference]: Finished difference Result 16318 states and 20691 transitions. [2021-11-07 08:25:33,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 08:25:33,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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 145 [2021-11-07 08:25:33,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:25:33,483 INFO L225 Difference]: With dead ends: 16318 [2021-11-07 08:25:33,483 INFO L226 Difference]: Without dead ends: 10707 [2021-11-07 08:25:33,490 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2021-11-07 08:25:33,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10707 states. [2021-11-07 08:25:35,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10707 to 7260. [2021-11-07 08:25:35,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7260 states, 7255 states have (on average 1.236526533425224) internal successors, (8971), 7259 states have internal predecessors, (8971), 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) [2021-11-07 08:25:35,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7260 states to 7260 states and 8971 transitions. [2021-11-07 08:25:35,080 INFO L78 Accepts]: Start accepts. Automaton has 7260 states and 8971 transitions. Word has length 145 [2021-11-07 08:25:35,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:25:35,080 INFO L470 AbstractCegarLoop]: Abstraction has 7260 states and 8971 transitions. [2021-11-07 08:25:35,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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) [2021-11-07 08:25:35,081 INFO L276 IsEmpty]: Start isEmpty. Operand 7260 states and 8971 transitions. [2021-11-07 08:25:35,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-07 08:25:35,089 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:25:35,090 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:35,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:35,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:25:35,303 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:25:35,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:35,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1640034952, now seen corresponding path program 1 times [2021-11-07 08:25:35,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:35,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096718589] [2021-11-07 08:25:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:35,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-07 08:25:35,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:35,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096718589] [2021-11-07 08:25:35,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096718589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:25:35,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:25:35,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:25:35,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600722589] [2021-11-07 08:25:35,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:25:35,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:35,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:25:35,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:25:35,372 INFO L87 Difference]: Start difference. First operand 7260 states and 8971 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2021-11-07 08:25:36,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:36,723 INFO L93 Difference]: Finished difference Result 11834 states and 14668 transitions. [2021-11-07 08:25:36,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:25:36,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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 146 [2021-11-07 08:25:36,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:25:36,728 INFO L225 Difference]: With dead ends: 11834 [2021-11-07 08:25:36,729 INFO L226 Difference]: Without dead ends: 5214 [2021-11-07 08:25:36,735 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:25:36,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5214 states. [2021-11-07 08:25:37,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5214 to 5186. [2021-11-07 08:25:37,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5186 states, 5181 states have (on average 1.2374059061957152) internal successors, (6411), 5185 states have internal predecessors, (6411), 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) [2021-11-07 08:25:37,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5186 states to 5186 states and 6411 transitions. [2021-11-07 08:25:37,783 INFO L78 Accepts]: Start accepts. Automaton has 5186 states and 6411 transitions. Word has length 146 [2021-11-07 08:25:37,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:25:37,784 INFO L470 AbstractCegarLoop]: Abstraction has 5186 states and 6411 transitions. [2021-11-07 08:25:37,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2021-11-07 08:25:37,784 INFO L276 IsEmpty]: Start isEmpty. Operand 5186 states and 6411 transitions. [2021-11-07 08:25:37,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-07 08:25:37,790 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:25:37,790 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:37,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-07 08:25:37,791 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:25:37,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:37,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1660310691, now seen corresponding path program 1 times [2021-11-07 08:25:37,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:37,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496565424] [2021-11-07 08:25:37,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:37,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 45 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:38,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:38,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496565424] [2021-11-07 08:25:38,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496565424] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:25:38,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020743875] [2021-11-07 08:25:38,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:38,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:25:38,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:38,107 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:25:38,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 08:25:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:39,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 08:25:39,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:39,532 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 08:25:39,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020743875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:25:39,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:25:39,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2021-11-07 08:25:39,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692468488] [2021-11-07 08:25:39,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:25:39,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:39,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:25:39,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-11-07 08:25:39,535 INFO L87 Difference]: Start difference. First operand 5186 states and 6411 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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) [2021-11-07 08:25:41,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:41,752 INFO L93 Difference]: Finished difference Result 13298 states and 16552 transitions. [2021-11-07 08:25:41,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 08:25:41,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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 149 [2021-11-07 08:25:41,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:25:41,762 INFO L225 Difference]: With dead ends: 13298 [2021-11-07 08:25:41,763 INFO L226 Difference]: Without dead ends: 8957 [2021-11-07 08:25:41,769 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-11-07 08:25:41,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8957 states. [2021-11-07 08:25:42,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8957 to 5186. [2021-11-07 08:25:42,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5186 states, 5181 states have (on average 1.2370198803319823) internal successors, (6409), 5185 states have internal predecessors, (6409), 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) [2021-11-07 08:25:42,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5186 states to 5186 states and 6409 transitions. [2021-11-07 08:25:42,933 INFO L78 Accepts]: Start accepts. Automaton has 5186 states and 6409 transitions. Word has length 149 [2021-11-07 08:25:42,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:25:42,933 INFO L470 AbstractCegarLoop]: Abstraction has 5186 states and 6409 transitions. [2021-11-07 08:25:42,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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) [2021-11-07 08:25:42,934 INFO L276 IsEmpty]: Start isEmpty. Operand 5186 states and 6409 transitions. [2021-11-07 08:25:42,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-07 08:25:42,939 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:25:42,939 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:42,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:43,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:25:43,143 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:25:43,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:43,144 INFO L85 PathProgramCache]: Analyzing trace with hash -2043778853, now seen corresponding path program 1 times [2021-11-07 08:25:43,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:43,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786566461] [2021-11-07 08:25:43,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:43,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:43,286 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 08:25:43,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:43,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786566461] [2021-11-07 08:25:43,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786566461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:25:43,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:25:43,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:25:43,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534148830] [2021-11-07 08:25:43,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:25:43,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:43,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:25:43,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:25:43,290 INFO L87 Difference]: Start difference. First operand 5186 states and 6409 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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) [2021-11-07 08:25:46,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:46,005 INFO L93 Difference]: Finished difference Result 13191 states and 16550 transitions. [2021-11-07 08:25:46,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 08:25:46,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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 150 [2021-11-07 08:25:46,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:25:46,016 INFO L225 Difference]: With dead ends: 13191 [2021-11-07 08:25:46,016 INFO L226 Difference]: Without dead ends: 10244 [2021-11-07 08:25:46,020 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-07 08:25:46,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10244 states. [2021-11-07 08:25:47,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10244 to 5312. [2021-11-07 08:25:47,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5312 states, 5307 states have (on average 1.2353495383455813) internal successors, (6556), 5311 states have internal predecessors, (6556), 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) [2021-11-07 08:25:47,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5312 states to 5312 states and 6556 transitions. [2021-11-07 08:25:47,099 INFO L78 Accepts]: Start accepts. Automaton has 5312 states and 6556 transitions. Word has length 150 [2021-11-07 08:25:47,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:25:47,099 INFO L470 AbstractCegarLoop]: Abstraction has 5312 states and 6556 transitions. [2021-11-07 08:25:47,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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) [2021-11-07 08:25:47,100 INFO L276 IsEmpty]: Start isEmpty. Operand 5312 states and 6556 transitions. [2021-11-07 08:25:47,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-07 08:25:47,104 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:25:47,104 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:47,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-07 08:25:47,104 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:25:47,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:47,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1490980259, now seen corresponding path program 1 times [2021-11-07 08:25:47,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:47,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248668355] [2021-11-07 08:25:47,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:47,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:47,272 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:47,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:47,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248668355] [2021-11-07 08:25:47,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248668355] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:25:47,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002893068] [2021-11-07 08:25:47,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:47,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:25:47,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:47,279 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:25:47,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 08:25:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:48,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 08:25:48,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:48,926 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:48,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002893068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:25:48,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:25:48,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 12 [2021-11-07 08:25:48,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357789913] [2021-11-07 08:25:48,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:25:48,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:48,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:25:48,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-07 08:25:48,930 INFO L87 Difference]: Start difference. First operand 5312 states and 6556 transitions. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 8 states have internal predecessors, (151), 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) [2021-11-07 08:25:50,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:50,860 INFO L93 Difference]: Finished difference Result 11390 states and 14008 transitions. [2021-11-07 08:25:50,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 08:25:50,861 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 8 states have internal predecessors, (151), 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 151 [2021-11-07 08:25:50,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:25:50,868 INFO L225 Difference]: With dead ends: 11390 [2021-11-07 08:25:50,869 INFO L226 Difference]: Without dead ends: 7045 [2021-11-07 08:25:50,875 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2021-11-07 08:25:50,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7045 states. [2021-11-07 08:25:52,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7045 to 5013. [2021-11-07 08:25:52,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5013 states, 5008 states have (on average 1.2344249201277955) internal successors, (6182), 5012 states have internal predecessors, (6182), 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) [2021-11-07 08:25:52,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 6182 transitions. [2021-11-07 08:25:52,109 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 6182 transitions. Word has length 151 [2021-11-07 08:25:52,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:25:52,109 INFO L470 AbstractCegarLoop]: Abstraction has 5013 states and 6182 transitions. [2021-11-07 08:25:52,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 8 states have internal predecessors, (151), 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) [2021-11-07 08:25:52,110 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 6182 transitions. [2021-11-07 08:25:52,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-07 08:25:52,115 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:25:52,115 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:52,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:52,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-11-07 08:25:52,323 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:25:52,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:52,324 INFO L85 PathProgramCache]: Analyzing trace with hash -253041123, now seen corresponding path program 1 times [2021-11-07 08:25:52,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:52,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661803143] [2021-11-07 08:25:52,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:52,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:52,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:52,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661803143] [2021-11-07 08:25:52,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661803143] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:25:52,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71695100] [2021-11-07 08:25:52,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:52,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:25:52,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:52,549 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:25:52,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 08:25:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:53,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 08:25:53,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:54,076 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:54,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71695100] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:25:54,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:25:54,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2021-11-07 08:25:54,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660013582] [2021-11-07 08:25:54,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:25:54,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:54,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:25:54,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:25:54,079 INFO L87 Difference]: Start difference. First operand 5013 states and 6182 transitions. Second operand has 8 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 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) [2021-11-07 08:25:56,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:56,292 INFO L93 Difference]: Finished difference Result 11103 states and 13888 transitions. [2021-11-07 08:25:56,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 08:25:56,293 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 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 151 [2021-11-07 08:25:56,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:25:56,303 INFO L225 Difference]: With dead ends: 11103 [2021-11-07 08:25:56,303 INFO L226 Difference]: Without dead ends: 8128 [2021-11-07 08:25:56,307 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2021-11-07 08:25:56,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8128 states. [2021-11-07 08:25:57,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8128 to 5013. [2021-11-07 08:25:57,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5013 states, 5008 states have (on average 1.2280351437699681) internal successors, (6150), 5012 states have internal predecessors, (6150), 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) [2021-11-07 08:25:57,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 6150 transitions. [2021-11-07 08:25:57,432 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 6150 transitions. Word has length 151 [2021-11-07 08:25:57,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:25:57,432 INFO L470 AbstractCegarLoop]: Abstraction has 5013 states and 6150 transitions. [2021-11-07 08:25:57,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 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) [2021-11-07 08:25:57,433 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 6150 transitions. [2021-11-07 08:25:57,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-07 08:25:57,437 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:25:57,437 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:57,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:57,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-11-07 08:25:57,638 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:25:57,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:57,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1858726963, now seen corresponding path program 1 times [2021-11-07 08:25:57,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:57,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974631272] [2021-11-07 08:25:57,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:57,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:57,724 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 08:25:57,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:57,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974631272] [2021-11-07 08:25:57,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974631272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:25:57,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:25:57,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:25:57,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678490539] [2021-11-07 08:25:57,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:25:57,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:57,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:25:57,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:25:57,727 INFO L87 Difference]: Start difference. First operand 5013 states and 6150 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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) [2021-11-07 08:25:59,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:59,302 INFO L93 Difference]: Finished difference Result 10641 states and 13165 transitions. [2021-11-07 08:25:59,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:25:59,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 152 [2021-11-07 08:25:59,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:25:59,311 INFO L225 Difference]: With dead ends: 10641 [2021-11-07 08:25:59,311 INFO L226 Difference]: Without dead ends: 7682 [2021-11-07 08:25:59,315 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 [2021-11-07 08:25:59,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7682 states. [2021-11-07 08:26:00,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7682 to 6237. [2021-11-07 08:26:00,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6237 states, 6232 states have (on average 1.2252888318356867) internal successors, (7636), 6236 states have internal predecessors, (7636), 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) [2021-11-07 08:26:00,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6237 states to 6237 states and 7636 transitions. [2021-11-07 08:26:00,738 INFO L78 Accepts]: Start accepts. Automaton has 6237 states and 7636 transitions. Word has length 152 [2021-11-07 08:26:00,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:26:00,738 INFO L470 AbstractCegarLoop]: Abstraction has 6237 states and 7636 transitions. [2021-11-07 08:26:00,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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) [2021-11-07 08:26:00,738 INFO L276 IsEmpty]: Start isEmpty. Operand 6237 states and 7636 transitions. [2021-11-07 08:26:00,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-07 08:26:00,743 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:26:00,743 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:26:00,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-07 08:26:00,743 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:26:00,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:26:00,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1980669719, now seen corresponding path program 1 times [2021-11-07 08:26:00,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:26:00,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234361710] [2021-11-07 08:26:00,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:26:00,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:26:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:26:00,991 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 45 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:26:00,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:26:00,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234361710] [2021-11-07 08:26:00,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234361710] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:26:00,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306932540] [2021-11-07 08:26:00,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:26:00,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:26:00,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:26:00,993 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:26:01,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 08:26:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:26:01,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 08:26:01,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:26:02,414 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 35 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:26:02,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306932540] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:26:02,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:26:02,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2021-11-07 08:26:02,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978696847] [2021-11-07 08:26:02,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 08:26:02,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:26:02,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 08:26:02,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2021-11-07 08:26:02,417 INFO L87 Difference]: Start difference. First operand 6237 states and 7636 transitions. Second operand has 17 states, 17 states have (on average 16.058823529411764) internal successors, (273), 17 states have internal predecessors, (273), 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) [2021-11-07 08:26:16,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:26:16,328 INFO L93 Difference]: Finished difference Result 29479 states and 36561 transitions. [2021-11-07 08:26:16,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2021-11-07 08:26:16,329 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 16.058823529411764) internal successors, (273), 17 states have internal predecessors, (273), 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 152 [2021-11-07 08:26:16,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:26:16,358 INFO L225 Difference]: With dead ends: 29479 [2021-11-07 08:26:16,358 INFO L226 Difference]: Without dead ends: 24633 [2021-11-07 08:26:16,369 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17586 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=5753, Invalid=37303, Unknown=0, NotChecked=0, Total=43056 [2021-11-07 08:26:16,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24633 states. [2021-11-07 08:26:18,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24633 to 10013. [2021-11-07 08:26:18,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10013 states, 10008 states have (on average 1.2216227018385293) internal successors, (12226), 10012 states have internal predecessors, (12226), 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) [2021-11-07 08:26:18,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10013 states to 10013 states and 12226 transitions. [2021-11-07 08:26:18,713 INFO L78 Accepts]: Start accepts. Automaton has 10013 states and 12226 transitions. Word has length 152 [2021-11-07 08:26:18,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:26:18,714 INFO L470 AbstractCegarLoop]: Abstraction has 10013 states and 12226 transitions. [2021-11-07 08:26:18,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 16.058823529411764) internal successors, (273), 17 states have internal predecessors, (273), 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) [2021-11-07 08:26:18,715 INFO L276 IsEmpty]: Start isEmpty. Operand 10013 states and 12226 transitions. [2021-11-07 08:26:18,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-07 08:26:18,724 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:26:18,725 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:26:18,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-07 08:26:18,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-11-07 08:26:18,939 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:26:18,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:26:18,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1886969573, now seen corresponding path program 1 times [2021-11-07 08:26:18,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:26:18,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626421893] [2021-11-07 08:26:18,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:26:18,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:26:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:26:19,035 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-07 08:26:19,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:26:19,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626421893] [2021-11-07 08:26:19,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626421893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:26:19,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:26:19,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:26:19,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329396029] [2021-11-07 08:26:19,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:26:19,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:26:19,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:26:19,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:26:19,038 INFO L87 Difference]: Start difference. First operand 10013 states and 12226 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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) [2021-11-07 08:26:21,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:26:21,228 INFO L93 Difference]: Finished difference Result 18224 states and 22385 transitions. [2021-11-07 08:26:21,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:26:21,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 152 [2021-11-07 08:26:21,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:26:21,239 INFO L225 Difference]: With dead ends: 18224 [2021-11-07 08:26:21,239 INFO L226 Difference]: Without dead ends: 9089 [2021-11-07 08:26:21,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:26:21,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9089 states. [2021-11-07 08:26:23,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9089 to 9089. [2021-11-07 08:26:23,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9089 states, 9084 states have (on average 1.2267723469837075) internal successors, (11144), 9088 states have internal predecessors, (11144), 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) [2021-11-07 08:26:23,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9089 states to 9089 states and 11144 transitions. [2021-11-07 08:26:23,382 INFO L78 Accepts]: Start accepts. Automaton has 9089 states and 11144 transitions. Word has length 152 [2021-11-07 08:26:23,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:26:23,382 INFO L470 AbstractCegarLoop]: Abstraction has 9089 states and 11144 transitions. [2021-11-07 08:26:23,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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) [2021-11-07 08:26:23,383 INFO L276 IsEmpty]: Start isEmpty. Operand 9089 states and 11144 transitions. [2021-11-07 08:26:23,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-07 08:26:23,390 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:26:23,390 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:26:23,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-07 08:26:23,390 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:26:23,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:26:23,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1169656938, now seen corresponding path program 1 times [2021-11-07 08:26:23,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:26:23,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678920845] [2021-11-07 08:26:23,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:26:23,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:26:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:26:23,663 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:26:23,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:26:23,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678920845] [2021-11-07 08:26:23,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678920845] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:26:23,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829122689] [2021-11-07 08:26:23,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:26:23,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:26:23,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:26:23,667 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:26:23,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 08:26:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:26:24,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 08:26:24,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:26:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:26:25,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829122689] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:26:25,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:26:25,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-11-07 08:26:25,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289527174] [2021-11-07 08:26:25,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 08:26:25,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:26:25,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 08:26:25,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:26:25,921 INFO L87 Difference]: Start difference. First operand 9089 states and 11144 transitions. Second operand has 10 states, 10 states have (on average 23.4) internal successors, (234), 9 states have internal predecessors, (234), 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) [2021-11-07 08:26:29,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:26:29,223 INFO L93 Difference]: Finished difference Result 16951 states and 20984 transitions. [2021-11-07 08:26:29,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 08:26:29,223 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.4) internal successors, (234), 9 states have internal predecessors, (234), 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 153 [2021-11-07 08:26:29,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:26:29,236 INFO L225 Difference]: With dead ends: 16951 [2021-11-07 08:26:29,236 INFO L226 Difference]: Without dead ends: 10697 [2021-11-07 08:26:29,242 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 147 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2021-11-07 08:26:29,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10697 states. [2021-11-07 08:26:31,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10697 to 8651. [2021-11-07 08:26:31,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8651 states, 8646 states have (on average 1.2253065001156604) internal successors, (10594), 8650 states have internal predecessors, (10594), 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) [2021-11-07 08:26:31,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8651 states to 8651 states and 10594 transitions. [2021-11-07 08:26:31,331 INFO L78 Accepts]: Start accepts. Automaton has 8651 states and 10594 transitions. Word has length 153 [2021-11-07 08:26:31,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:26:31,331 INFO L470 AbstractCegarLoop]: Abstraction has 8651 states and 10594 transitions. [2021-11-07 08:26:31,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.4) internal successors, (234), 9 states have internal predecessors, (234), 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) [2021-11-07 08:26:31,332 INFO L276 IsEmpty]: Start isEmpty. Operand 8651 states and 10594 transitions. [2021-11-07 08:26:31,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-07 08:26:31,337 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:26:31,337 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:26:31,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 08:26:31,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:26:31,538 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:26:31,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:26:31,539 INFO L85 PathProgramCache]: Analyzing trace with hash 707594349, now seen corresponding path program 1 times [2021-11-07 08:26:31,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:26:31,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21314510] [2021-11-07 08:26:31,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:26:31,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:26:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:26:31,594 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-07 08:26:31,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:26:31,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21314510] [2021-11-07 08:26:31,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21314510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:26:31,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:26:31,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:26:31,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256665219] [2021-11-07 08:26:31,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:26:31,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:26:31,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:26:31,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:26:31,597 INFO L87 Difference]: Start difference. First operand 8651 states and 10594 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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) [2021-11-07 08:26:33,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:26:33,048 INFO L93 Difference]: Finished difference Result 14006 states and 17160 transitions. [2021-11-07 08:26:33,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:26:33,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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 153 [2021-11-07 08:26:33,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:26:33,056 INFO L225 Difference]: With dead ends: 14006 [2021-11-07 08:26:33,056 INFO L226 Difference]: Without dead ends: 5980 [2021-11-07 08:26:33,062 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:26:33,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5980 states. [2021-11-07 08:26:34,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5980 to 5962. [2021-11-07 08:26:34,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5962 states, 5957 states have (on average 1.2173913043478262) internal successors, (7252), 5961 states have internal predecessors, (7252), 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) [2021-11-07 08:26:34,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5962 states to 5962 states and 7252 transitions. [2021-11-07 08:26:34,514 INFO L78 Accepts]: Start accepts. Automaton has 5962 states and 7252 transitions. Word has length 153 [2021-11-07 08:26:34,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:26:34,515 INFO L470 AbstractCegarLoop]: Abstraction has 5962 states and 7252 transitions. [2021-11-07 08:26:34,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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) [2021-11-07 08:26:34,515 INFO L276 IsEmpty]: Start isEmpty. Operand 5962 states and 7252 transitions. [2021-11-07 08:26:34,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-07 08:26:34,517 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:26:34,517 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:26:34,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-07 08:26:34,518 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:26:34,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:26:34,519 INFO L85 PathProgramCache]: Analyzing trace with hash 797904600, now seen corresponding path program 1 times [2021-11-07 08:26:34,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:26:34,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793843622] [2021-11-07 08:26:34,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:26:34,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:26:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:26:34,708 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:26:34,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:26:34,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793843622] [2021-11-07 08:26:34,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793843622] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:26:34,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897563730] [2021-11-07 08:26:34,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:26:34,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:26:34,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:26:34,715 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:26:34,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-07 08:26:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:26:35,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 08:26:35,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:26:36,499 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:26:36,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897563730] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:26:36,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:26:36,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-11-07 08:26:36,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601243227] [2021-11-07 08:26:36,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 08:26:36,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:26:36,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 08:26:36,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-07 08:26:36,502 INFO L87 Difference]: Start difference. First operand 5962 states and 7252 transitions. Second operand has 13 states, 13 states have (on average 21.692307692307693) internal successors, (282), 13 states have internal predecessors, (282), 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) [2021-11-07 08:26:49,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:26:49,175 INFO L93 Difference]: Finished difference Result 36509 states and 46042 transitions. [2021-11-07 08:26:49,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2021-11-07 08:26:49,176 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 21.692307692307693) internal successors, (282), 13 states have internal predecessors, (282), 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 155 [2021-11-07 08:26:49,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:26:49,213 INFO L225 Difference]: With dead ends: 36509 [2021-11-07 08:26:49,213 INFO L226 Difference]: Without dead ends: 32104 [2021-11-07 08:26:49,222 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7841 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2820, Invalid=16640, Unknown=0, NotChecked=0, Total=19460 [2021-11-07 08:26:49,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32104 states. [2021-11-07 08:26:51,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32104 to 7478. [2021-11-07 08:26:51,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7478 states, 7473 states have (on average 1.221865382042018) internal successors, (9131), 7477 states have internal predecessors, (9131), 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) [2021-11-07 08:26:51,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7478 states to 7478 states and 9131 transitions. [2021-11-07 08:26:51,360 INFO L78 Accepts]: Start accepts. Automaton has 7478 states and 9131 transitions. Word has length 155 [2021-11-07 08:26:51,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:26:51,361 INFO L470 AbstractCegarLoop]: Abstraction has 7478 states and 9131 transitions. [2021-11-07 08:26:51,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 21.692307692307693) internal successors, (282), 13 states have internal predecessors, (282), 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) [2021-11-07 08:26:51,361 INFO L276 IsEmpty]: Start isEmpty. Operand 7478 states and 9131 transitions. [2021-11-07 08:26:51,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-07 08:26:51,363 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:26:51,364 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:26:51,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-07 08:26:51,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:26:51,565 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:26:51,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:26:51,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1281941302, now seen corresponding path program 1 times [2021-11-07 08:26:51,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:26:51,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475055433] [2021-11-07 08:26:51,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:26:51,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:26:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:26:51,739 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 38 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:26:51,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:26:51,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475055433] [2021-11-07 08:26:51,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475055433] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:26:51,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359228158] [2021-11-07 08:26:51,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:26:51,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:26:51,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:26:51,743 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:26:51,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-07 08:26:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:26:52,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 08:26:52,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:26:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:26:53,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359228158] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:26:53,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:26:53,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-07 08:26:53,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597364996] [2021-11-07 08:26:53,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 08:26:53,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:26:53,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 08:26:53,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-11-07 08:26:53,443 INFO L87 Difference]: Start difference. First operand 7478 states and 9131 transitions. Second operand has 13 states, 13 states have (on average 23.076923076923077) internal successors, (300), 13 states have internal predecessors, (300), 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) [2021-11-07 08:27:09,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:27:09,865 INFO L93 Difference]: Finished difference Result 31804 states and 39807 transitions. [2021-11-07 08:27:09,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2021-11-07 08:27:09,866 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 23.076923076923077) internal successors, (300), 13 states have internal predecessors, (300), 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 155 [2021-11-07 08:27:09,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:27:09,897 INFO L225 Difference]: With dead ends: 31804 [2021-11-07 08:27:09,898 INFO L226 Difference]: Without dead ends: 25231 [2021-11-07 08:27:09,907 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12604 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=4011, Invalid=27495, Unknown=0, NotChecked=0, Total=31506 [2021-11-07 08:27:09,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25231 states. [2021-11-07 08:27:11,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25231 to 6382. [2021-11-07 08:27:11,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6382 states, 6377 states have (on average 1.2162458836443468) internal successors, (7756), 6381 states have internal predecessors, (7756), 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) [2021-11-07 08:27:11,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6382 states to 6382 states and 7756 transitions. [2021-11-07 08:27:11,722 INFO L78 Accepts]: Start accepts. Automaton has 6382 states and 7756 transitions. Word has length 155 [2021-11-07 08:27:11,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:27:11,722 INFO L470 AbstractCegarLoop]: Abstraction has 6382 states and 7756 transitions. [2021-11-07 08:27:11,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.076923076923077) internal successors, (300), 13 states have internal predecessors, (300), 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) [2021-11-07 08:27:11,723 INFO L276 IsEmpty]: Start isEmpty. Operand 6382 states and 7756 transitions. [2021-11-07 08:27:11,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-07 08:27:11,726 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:27:11,726 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:27:11,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-07 08:27:11,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:27:11,955 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:27:11,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:27:11,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1839905318, now seen corresponding path program 1 times [2021-11-07 08:27:11,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:27:11,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126730473] [2021-11-07 08:27:11,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:27:11,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:27:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:27:12,029 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 08:27:12,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:27:12,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126730473] [2021-11-07 08:27:12,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126730473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:27:12,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:27:12,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:27:12,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537169272] [2021-11-07 08:27:12,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:27:12,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:27:12,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:27:12,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:27:12,032 INFO L87 Difference]: Start difference. First operand 6382 states and 7756 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2021-11-07 08:27:14,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:27:14,503 INFO L93 Difference]: Finished difference Result 12878 states and 15737 transitions. [2021-11-07 08:27:14,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:27:14,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 156 [2021-11-07 08:27:14,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:27:14,513 INFO L225 Difference]: With dead ends: 12878 [2021-11-07 08:27:14,513 INFO L226 Difference]: Without dead ends: 7936 [2021-11-07 08:27:14,518 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 [2021-11-07 08:27:14,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7936 states. [2021-11-07 08:27:16,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7936 to 6376. [2021-11-07 08:27:16,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6376 states, 6371 states have (on average 1.2145660021974571) internal successors, (7738), 6375 states have internal predecessors, (7738), 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) [2021-11-07 08:27:16,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6376 states to 6376 states and 7738 transitions. [2021-11-07 08:27:16,262 INFO L78 Accepts]: Start accepts. Automaton has 6376 states and 7738 transitions. Word has length 156 [2021-11-07 08:27:16,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:27:16,263 INFO L470 AbstractCegarLoop]: Abstraction has 6376 states and 7738 transitions. [2021-11-07 08:27:16,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2021-11-07 08:27:16,263 INFO L276 IsEmpty]: Start isEmpty. Operand 6376 states and 7738 transitions. [2021-11-07 08:27:16,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-07 08:27:16,265 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:27:16,265 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:27:16,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-07 08:27:16,266 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:27:16,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:27:16,266 INFO L85 PathProgramCache]: Analyzing trace with hash -2117913928, now seen corresponding path program 1 times [2021-11-07 08:27:16,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:27:16,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602091739] [2021-11-07 08:27:16,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:27:16,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:27:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:27:16,442 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:27:16,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:27:16,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602091739] [2021-11-07 08:27:16,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602091739] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:27:16,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148257765] [2021-11-07 08:27:16,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:27:16,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:27:16,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:27:16,460 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:27:16,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 08:27:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:27:17,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 08:27:17,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:27:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:27:18,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148257765] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:27:18,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:27:18,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2021-11-07 08:27:18,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581807792] [2021-11-07 08:27:18,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:27:18,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:27:18,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:27:18,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:27:18,492 INFO L87 Difference]: Start difference. First operand 6376 states and 7738 transitions. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 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) [2021-11-07 08:27:23,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:27:23,639 INFO L93 Difference]: Finished difference Result 19954 states and 24939 transitions. [2021-11-07 08:27:23,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 08:27:23,640 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 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 156 [2021-11-07 08:27:23,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:27:23,657 INFO L225 Difference]: With dead ends: 19954 [2021-11-07 08:27:23,658 INFO L226 Difference]: Without dead ends: 15129 [2021-11-07 08:27:23,662 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 163 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2021-11-07 08:27:23,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15129 states. [2021-11-07 08:27:25,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15129 to 5728. [2021-11-07 08:27:25,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5728 states, 5723 states have (on average 1.212126507076708) internal successors, (6937), 5727 states have internal predecessors, (6937), 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) [2021-11-07 08:27:25,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5728 states to 5728 states and 6937 transitions. [2021-11-07 08:27:25,312 INFO L78 Accepts]: Start accepts. Automaton has 5728 states and 6937 transitions. Word has length 156 [2021-11-07 08:27:25,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:27:25,313 INFO L470 AbstractCegarLoop]: Abstraction has 5728 states and 6937 transitions. [2021-11-07 08:27:25,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 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) [2021-11-07 08:27:25,313 INFO L276 IsEmpty]: Start isEmpty. Operand 5728 states and 6937 transitions. [2021-11-07 08:27:25,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-07 08:27:25,315 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:27:25,315 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:27:25,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-07 08:27:25,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-11-07 08:27:25,516 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:27:25,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:27:25,517 INFO L85 PathProgramCache]: Analyzing trace with hash 746658698, now seen corresponding path program 1 times [2021-11-07 08:27:25,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:27:25,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694635403] [2021-11-07 08:27:25,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:27:25,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:27:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:27:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 30 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:27:25,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:27:25,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694635403] [2021-11-07 08:27:25,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694635403] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:27:25,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285801667] [2021-11-07 08:27:25,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:27:25,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:27:25,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:27:25,779 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:27:25,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-07 08:27:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:27:27,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 08:27:27,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:27:27,636 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 08:27:27,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285801667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:27:27,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:27:27,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2021-11-07 08:27:27,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279835434] [2021-11-07 08:27:27,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:27:27,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:27:27,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:27:27,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-11-07 08:27:27,638 INFO L87 Difference]: Start difference. First operand 5728 states and 6937 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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) [2021-11-07 08:27:30,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:27:30,510 INFO L93 Difference]: Finished difference Result 12784 states and 15827 transitions. [2021-11-07 08:27:30,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 08:27:30,511 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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 156 [2021-11-07 08:27:30,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:27:30,520 INFO L225 Difference]: With dead ends: 12784 [2021-11-07 08:27:30,520 INFO L226 Difference]: Without dead ends: 8678 [2021-11-07 08:27:30,524 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2021-11-07 08:27:30,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8678 states. [2021-11-07 08:27:32,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8678 to 5724. [2021-11-07 08:27:32,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5724 states, 5719 states have (on average 1.210876027277496) internal successors, (6925), 5723 states have internal predecessors, (6925), 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) [2021-11-07 08:27:32,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5724 states to 5724 states and 6925 transitions. [2021-11-07 08:27:32,266 INFO L78 Accepts]: Start accepts. Automaton has 5724 states and 6925 transitions. Word has length 156 [2021-11-07 08:27:32,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:27:32,266 INFO L470 AbstractCegarLoop]: Abstraction has 5724 states and 6925 transitions. [2021-11-07 08:27:32,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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) [2021-11-07 08:27:32,266 INFO L276 IsEmpty]: Start isEmpty. Operand 5724 states and 6925 transitions. [2021-11-07 08:27:32,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-07 08:27:32,268 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:27:32,269 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:27:32,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-11-07 08:27:32,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:27:32,472 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:27:32,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:27:32,473 INFO L85 PathProgramCache]: Analyzing trace with hash -445280032, now seen corresponding path program 1 times [2021-11-07 08:27:32,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:27:32,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061464459] [2021-11-07 08:27:32,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:27:32,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:27:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:27:32,722 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 44 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:27:32,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:27:32,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061464459] [2021-11-07 08:27:32,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061464459] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:27:32,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493505513] [2021-11-07 08:27:32,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:27:32,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:27:32,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:27:32,726 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:27:32,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-07 08:27:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:27:34,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 08:27:34,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:27:34,477 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 08:27:34,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493505513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:27:34,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:27:34,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2021-11-07 08:27:34,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871730104] [2021-11-07 08:27:34,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:27:34,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:27:34,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:27:34,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-07 08:27:34,479 INFO L87 Difference]: Start difference. First operand 5724 states and 6925 transitions. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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) [2021-11-07 08:27:38,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:27:38,271 INFO L93 Difference]: Finished difference Result 16095 states and 19904 transitions. [2021-11-07 08:27:38,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 08:27:38,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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 156 [2021-11-07 08:27:38,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:27:38,283 INFO L225 Difference]: With dead ends: 16095 [2021-11-07 08:27:38,283 INFO L226 Difference]: Without dead ends: 11382 [2021-11-07 08:27:38,286 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2021-11-07 08:27:38,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11382 states. [2021-11-07 08:27:39,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11382 to 5721. [2021-11-07 08:27:39,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5721 states, 5716 states have (on average 1.208187543736879) internal successors, (6906), 5720 states have internal predecessors, (6906), 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) [2021-11-07 08:27:39,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5721 states to 5721 states and 6906 transitions. [2021-11-07 08:27:40,000 INFO L78 Accepts]: Start accepts. Automaton has 5721 states and 6906 transitions. Word has length 156 [2021-11-07 08:27:40,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:27:40,000 INFO L470 AbstractCegarLoop]: Abstraction has 5721 states and 6906 transitions. [2021-11-07 08:27:40,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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) [2021-11-07 08:27:40,000 INFO L276 IsEmpty]: Start isEmpty. Operand 5721 states and 6906 transitions. [2021-11-07 08:27:40,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-07 08:27:40,002 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:27:40,002 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:27:40,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-11-07 08:27:40,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-11-07 08:27:40,203 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:27:40,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:27:40,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1965811942, now seen corresponding path program 1 times [2021-11-07 08:27:40,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:27:40,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439197119] [2021-11-07 08:27:40,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:27:40,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:27:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:27:40,490 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:27:40,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:27:40,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439197119] [2021-11-07 08:27:40,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439197119] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:27:40,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808453262] [2021-11-07 08:27:40,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:27:40,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:27:40,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:27:40,492 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:27:40,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-07 08:27:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:27:41,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-07 08:27:41,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:27:42,359 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 08:27:42,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808453262] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:27:42,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:27:42,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-11-07 08:27:42,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320334239] [2021-11-07 08:27:42,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 08:27:42,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:27:42,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 08:27:42,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-11-07 08:27:42,363 INFO L87 Difference]: Start difference. First operand 5721 states and 6906 transitions. Second operand has 15 states, 15 states have (on average 21.0) internal successors, (315), 15 states have internal predecessors, (315), 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) [2021-11-07 08:27:48,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:27:48,431 INFO L93 Difference]: Finished difference Result 14881 states and 18331 transitions. [2021-11-07 08:27:48,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-11-07 08:27:48,432 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 21.0) internal successors, (315), 15 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-11-07 08:27:48,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:27:48,444 INFO L225 Difference]: With dead ends: 14881 [2021-11-07 08:27:48,444 INFO L226 Difference]: Without dead ends: 10563 [2021-11-07 08:27:48,450 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2959 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1456, Invalid=6554, Unknown=0, NotChecked=0, Total=8010 [2021-11-07 08:27:48,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10563 states. [2021-11-07 08:27:50,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10563 to 6056. [2021-11-07 08:27:50,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6056 states, 6051 states have (on average 1.2183110229714096) internal successors, (7372), 6055 states have internal predecessors, (7372), 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) [2021-11-07 08:27:50,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6056 states to 6056 states and 7372 transitions. [2021-11-07 08:27:50,453 INFO L78 Accepts]: Start accepts. Automaton has 6056 states and 7372 transitions. Word has length 159 [2021-11-07 08:27:50,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:27:50,454 INFO L470 AbstractCegarLoop]: Abstraction has 6056 states and 7372 transitions. [2021-11-07 08:27:50,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 21.0) internal successors, (315), 15 states have internal predecessors, (315), 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) [2021-11-07 08:27:50,454 INFO L276 IsEmpty]: Start isEmpty. Operand 6056 states and 7372 transitions. [2021-11-07 08:27:50,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-07 08:27:50,456 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:27:50,456 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:27:50,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-07 08:27:50,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-11-07 08:27:50,657 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:27:50,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:27:50,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1797880627, now seen corresponding path program 1 times [2021-11-07 08:27:50,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:27:50,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628788812] [2021-11-07 08:27:50,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:27:50,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:27:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:27:50,821 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 40 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:27:50,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:27:50,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628788812] [2021-11-07 08:27:50,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628788812] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:27:50,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266839515] [2021-11-07 08:27:50,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:27:50,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:27:50,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:27:50,827 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:27:50,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-07 08:27:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:27:52,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 08:27:52,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:27:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 48 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:27:53,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266839515] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:27:53,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:27:53,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2021-11-07 08:27:53,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908329334] [2021-11-07 08:27:53,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 08:27:53,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:27:53,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 08:27:53,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-07 08:27:53,252 INFO L87 Difference]: Start difference. First operand 6056 states and 7372 transitions. Second operand has 13 states, 13 states have (on average 19.53846153846154) internal successors, (254), 12 states have internal predecessors, (254), 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) [2021-11-07 08:27:59,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:27:59,551 INFO L93 Difference]: Finished difference Result 19705 states and 24092 transitions. [2021-11-07 08:27:59,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-07 08:27:59,552 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 19.53846153846154) internal successors, (254), 12 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2021-11-07 08:27:59,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:27:59,570 INFO L225 Difference]: With dead ends: 19705 [2021-11-07 08:27:59,570 INFO L226 Difference]: Without dead ends: 15064 [2021-11-07 08:27:59,577 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=652, Invalid=2210, Unknown=0, NotChecked=0, Total=2862 [2021-11-07 08:27:59,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15064 states. [2021-11-07 08:28:02,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15064 to 8296. [2021-11-07 08:28:02,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8296 states, 8291 states have (on average 1.2137257266915933) internal successors, (10063), 8295 states have internal predecessors, (10063), 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) [2021-11-07 08:28:02,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8296 states to 8296 states and 10063 transitions. [2021-11-07 08:28:02,322 INFO L78 Accepts]: Start accepts. Automaton has 8296 states and 10063 transitions. Word has length 161 [2021-11-07 08:28:02,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:28:02,322 INFO L470 AbstractCegarLoop]: Abstraction has 8296 states and 10063 transitions. [2021-11-07 08:28:02,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.53846153846154) internal successors, (254), 12 states have internal predecessors, (254), 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) [2021-11-07 08:28:02,323 INFO L276 IsEmpty]: Start isEmpty. Operand 8296 states and 10063 transitions. [2021-11-07 08:28:02,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-07 08:28:02,326 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:28:02,326 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:28:02,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-07 08:28:02,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-11-07 08:28:02,527 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:28:02,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:28:02,528 INFO L85 PathProgramCache]: Analyzing trace with hash 180440177, now seen corresponding path program 1 times [2021-11-07 08:28:02,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:28:02,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575509820] [2021-11-07 08:28:02,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:28:02,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:28:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:28:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-07 08:28:02,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:28:02,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575509820] [2021-11-07 08:28:02,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575509820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:28:02,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:28:02,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:28:02,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545549962] [2021-11-07 08:28:02,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:28:02,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:28:02,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:28:02,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:28:02,584 INFO L87 Difference]: Start difference. First operand 8296 states and 10063 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:28:04,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:28:04,555 INFO L93 Difference]: Finished difference Result 13603 states and 16554 transitions. [2021-11-07 08:28:04,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:28:04,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2021-11-07 08:28:04,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:28:04,562 INFO L225 Difference]: With dead ends: 13603 [2021-11-07 08:28:04,562 INFO L226 Difference]: Without dead ends: 5835 [2021-11-07 08:28:04,567 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:28:04,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5835 states. [2021-11-07 08:28:06,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5835 to 5835. [2021-11-07 08:28:06,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5835 states, 5830 states have (on average 1.2099485420240137) internal successors, (7054), 5834 states have internal predecessors, (7054), 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) [2021-11-07 08:28:06,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5835 states to 5835 states and 7054 transitions. [2021-11-07 08:28:06,403 INFO L78 Accepts]: Start accepts. Automaton has 5835 states and 7054 transitions. Word has length 161 [2021-11-07 08:28:06,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:28:06,404 INFO L470 AbstractCegarLoop]: Abstraction has 5835 states and 7054 transitions. [2021-11-07 08:28:06,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:28:06,404 INFO L276 IsEmpty]: Start isEmpty. Operand 5835 states and 7054 transitions. [2021-11-07 08:28:06,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-07 08:28:06,406 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:28:06,407 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:28:06,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-07 08:28:06,407 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:28:06,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:28:06,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1448196046, now seen corresponding path program 1 times [2021-11-07 08:28:06,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:28:06,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139850796] [2021-11-07 08:28:06,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:28:06,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:28:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:28:06,583 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:28:06,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:28:06,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139850796] [2021-11-07 08:28:06,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139850796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:28:06,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:28:06,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 08:28:06,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40976543] [2021-11-07 08:28:06,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 08:28:06,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:28:06,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 08:28:06,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:28:06,586 INFO L87 Difference]: Start difference. First operand 5835 states and 7054 transitions. Second operand has 10 states, 10 states have (on average 16.2) internal successors, (162), 10 states have internal predecessors, (162), 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) [2021-11-07 08:28:09,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:28:09,371 INFO L93 Difference]: Finished difference Result 11462 states and 13979 transitions. [2021-11-07 08:28:09,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 08:28:09,371 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.2) internal successors, (162), 10 states have internal predecessors, (162), 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 162 [2021-11-07 08:28:09,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:28:09,379 INFO L225 Difference]: With dead ends: 11462 [2021-11-07 08:28:09,379 INFO L226 Difference]: Without dead ends: 7081 [2021-11-07 08:28:09,383 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2021-11-07 08:28:09,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7081 states. [2021-11-07 08:28:11,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7081 to 5835. [2021-11-07 08:28:11,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5835 states, 5830 states have (on average 1.209605488850772) internal successors, (7052), 5834 states have internal predecessors, (7052), 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) [2021-11-07 08:28:11,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5835 states to 5835 states and 7052 transitions. [2021-11-07 08:28:11,280 INFO L78 Accepts]: Start accepts. Automaton has 5835 states and 7052 transitions. Word has length 162 [2021-11-07 08:28:11,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:28:11,281 INFO L470 AbstractCegarLoop]: Abstraction has 5835 states and 7052 transitions. [2021-11-07 08:28:11,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.2) internal successors, (162), 10 states have internal predecessors, (162), 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) [2021-11-07 08:28:11,281 INFO L276 IsEmpty]: Start isEmpty. Operand 5835 states and 7052 transitions. [2021-11-07 08:28:11,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-07 08:28:11,283 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:28:11,283 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:28:11,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-07 08:28:11,284 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:28:11,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:28:11,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1954980333, now seen corresponding path program 1 times [2021-11-07 08:28:11,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:28:11,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332904372] [2021-11-07 08:28:11,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:28:11,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:28:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:28:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 45 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:28:11,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:28:11,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332904372] [2021-11-07 08:28:11,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332904372] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:28:11,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394914018] [2021-11-07 08:28:11,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:28:11,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:28:11,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:28:11,516 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:28:11,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-07 08:28:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:28:13,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 08:28:13,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:28:14,849 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 18 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:28:14,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394914018] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:28:14,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:28:14,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2021-11-07 08:28:14,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304484694] [2021-11-07 08:28:14,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 08:28:14,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:28:14,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 08:28:14,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2021-11-07 08:28:14,852 INFO L87 Difference]: Start difference. First operand 5835 states and 7052 transitions. Second operand has 20 states, 20 states have (on average 14.5) internal successors, (290), 20 states have internal predecessors, (290), 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) [2021-11-07 08:28:47,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:28:47,484 INFO L93 Difference]: Finished difference Result 40776 states and 50746 transitions. [2021-11-07 08:28:47,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 401 states. [2021-11-07 08:28:47,485 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 14.5) internal successors, (290), 20 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2021-11-07 08:28:47,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:28:47,527 INFO L225 Difference]: With dead ends: 40776 [2021-11-07 08:28:47,527 INFO L226 Difference]: Without dead ends: 36203 [2021-11-07 08:28:47,544 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 406 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74003 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=8591, Invalid=157465, Unknown=0, NotChecked=0, Total=166056 [2021-11-07 08:28:47,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36203 states. [2021-11-07 08:28:51,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36203 to 11390. [2021-11-07 08:28:51,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11390 states, 11385 states have (on average 1.224681598594642) internal successors, (13943), 11389 states have internal predecessors, (13943), 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) [2021-11-07 08:28:51,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11390 states to 11390 states and 13943 transitions. [2021-11-07 08:28:51,676 INFO L78 Accepts]: Start accepts. Automaton has 11390 states and 13943 transitions. Word has length 163 [2021-11-07 08:28:51,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:28:51,677 INFO L470 AbstractCegarLoop]: Abstraction has 11390 states and 13943 transitions. [2021-11-07 08:28:51,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.5) internal successors, (290), 20 states have internal predecessors, (290), 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) [2021-11-07 08:28:51,677 INFO L276 IsEmpty]: Start isEmpty. Operand 11390 states and 13943 transitions. [2021-11-07 08:28:51,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-07 08:28:51,681 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:28:51,681 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:28:51,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-07 08:28:51,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:28:51,882 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:28:51,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:28:51,883 INFO L85 PathProgramCache]: Analyzing trace with hash -915285401, now seen corresponding path program 1 times [2021-11-07 08:28:51,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:28:51,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168942356] [2021-11-07 08:28:51,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:28:51,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:28:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:28:52,055 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 49 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:28:52,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:28:52,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168942356] [2021-11-07 08:28:52,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168942356] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:28:52,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577749821] [2021-11-07 08:28:52,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:28:52,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:28:52,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:28:52,058 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:28:52,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-07 08:28:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:28:53,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-07 08:28:53,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:28:54,812 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:28:54,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577749821] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:28:54,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:28:54,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 13 [2021-11-07 08:28:54,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665509255] [2021-11-07 08:28:54,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 08:28:54,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:28:54,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 08:28:54,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-07 08:28:54,815 INFO L87 Difference]: Start difference. First operand 11390 states and 13943 transitions. Second operand has 14 states, 14 states have (on average 17.428571428571427) internal successors, (244), 13 states have internal predecessors, (244), 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) [2021-11-07 08:29:00,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:29:00,718 INFO L93 Difference]: Finished difference Result 22485 states and 27780 transitions. [2021-11-07 08:29:00,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-07 08:29:00,719 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.428571428571427) internal successors, (244), 13 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-11-07 08:29:00,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:29:00,733 INFO L225 Difference]: With dead ends: 22485 [2021-11-07 08:29:00,733 INFO L226 Difference]: Without dead ends: 13384 [2021-11-07 08:29:00,739 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=279, Invalid=1127, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 08:29:00,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13384 states. [2021-11-07 08:29:04,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13384 to 10926. [2021-11-07 08:29:04,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10926 states, 10921 states have (on average 1.2272685651497115) internal successors, (13403), 10925 states have internal predecessors, (13403), 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) [2021-11-07 08:29:04,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10926 states to 10926 states and 13403 transitions. [2021-11-07 08:29:04,579 INFO L78 Accepts]: Start accepts. Automaton has 10926 states and 13403 transitions. Word has length 165 [2021-11-07 08:29:04,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:29:04,580 INFO L470 AbstractCegarLoop]: Abstraction has 10926 states and 13403 transitions. [2021-11-07 08:29:04,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.428571428571427) internal successors, (244), 13 states have internal predecessors, (244), 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) [2021-11-07 08:29:04,580 INFO L276 IsEmpty]: Start isEmpty. Operand 10926 states and 13403 transitions. [2021-11-07 08:29:04,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-07 08:29:04,583 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:29:04,583 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:29:04,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-07 08:29:04,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:29:04,787 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:29:04,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:29:04,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1685136790, now seen corresponding path program 1 times [2021-11-07 08:29:04,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:29:04,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112297990] [2021-11-07 08:29:04,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:29:04,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:29:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:29:04,945 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 35 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 08:29:04,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:29:04,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112297990] [2021-11-07 08:29:04,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112297990] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:29:04,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339256662] [2021-11-07 08:29:04,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:29:04,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:29:04,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:29:04,948 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:29:04,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-07 08:29:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:29:06,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-07 08:29:06,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:29:07,263 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 08:29:07,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339256662] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:29:07,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:29:07,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 10 [2021-11-07 08:29:07,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492206283] [2021-11-07 08:29:07,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 08:29:07,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:29:07,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 08:29:07,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:29:07,265 INFO L87 Difference]: Start difference. First operand 10926 states and 13403 transitions. Second operand has 10 states, 10 states have (on average 16.8) internal successors, (168), 10 states have internal predecessors, (168), 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) [2021-11-07 08:29:16,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:29:16,794 INFO L93 Difference]: Finished difference Result 34081 states and 42582 transitions. [2021-11-07 08:29:16,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-07 08:29:16,794 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.8) internal successors, (168), 10 states have internal predecessors, (168), 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 166 [2021-11-07 08:29:16,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:29:16,827 INFO L225 Difference]: With dead ends: 34081 [2021-11-07 08:29:16,827 INFO L226 Difference]: Without dead ends: 25420 [2021-11-07 08:29:16,835 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2021-11-07 08:29:16,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25420 states. [2021-11-07 08:29:22,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25420 to 15360. [2021-11-07 08:29:22,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15360 states, 15355 states have (on average 1.2349723217193096) internal successors, (18963), 15359 states have internal predecessors, (18963), 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) [2021-11-07 08:29:22,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15360 states to 15360 states and 18963 transitions. [2021-11-07 08:29:22,700 INFO L78 Accepts]: Start accepts. Automaton has 15360 states and 18963 transitions. Word has length 166 [2021-11-07 08:29:22,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:29:22,701 INFO L470 AbstractCegarLoop]: Abstraction has 15360 states and 18963 transitions. [2021-11-07 08:29:22,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.8) internal successors, (168), 10 states have internal predecessors, (168), 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) [2021-11-07 08:29:22,701 INFO L276 IsEmpty]: Start isEmpty. Operand 15360 states and 18963 transitions. [2021-11-07 08:29:22,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-07 08:29:22,707 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:29:22,707 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:29:22,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-07 08:29:22,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-11-07 08:29:22,935 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:29:22,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:29:22,936 INFO L85 PathProgramCache]: Analyzing trace with hash 903411293, now seen corresponding path program 1 times [2021-11-07 08:29:22,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:29:22,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742982285] [2021-11-07 08:29:22,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:29:22,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:29:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:29:22,993 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-07 08:29:22,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:29:22,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742982285] [2021-11-07 08:29:22,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742982285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:29:22,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:29:22,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:29:22,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662679151] [2021-11-07 08:29:22,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:29:22,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:29:22,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:29:22,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:29:22,997 INFO L87 Difference]: Start difference. First operand 15360 states and 18963 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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) [2021-11-07 08:29:28,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:29:28,882 INFO L93 Difference]: Finished difference Result 30409 states and 37579 transitions. [2021-11-07 08:29:28,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:29:28,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2021-11-07 08:29:28,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:29:28,899 INFO L225 Difference]: With dead ends: 30409 [2021-11-07 08:29:28,899 INFO L226 Difference]: Without dead ends: 15360 [2021-11-07 08:29:28,906 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:29:28,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15360 states. [2021-11-07 08:29:34,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15360 to 15360. [2021-11-07 08:29:34,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15360 states, 15355 states have (on average 1.2328231846304136) internal successors, (18930), 15359 states have internal predecessors, (18930), 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) [2021-11-07 08:29:34,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15360 states to 15360 states and 18930 transitions. [2021-11-07 08:29:34,924 INFO L78 Accepts]: Start accepts. Automaton has 15360 states and 18930 transitions. Word has length 167 [2021-11-07 08:29:34,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:29:34,924 INFO L470 AbstractCegarLoop]: Abstraction has 15360 states and 18930 transitions. [2021-11-07 08:29:34,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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) [2021-11-07 08:29:34,925 INFO L276 IsEmpty]: Start isEmpty. Operand 15360 states and 18930 transitions. [2021-11-07 08:29:34,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-07 08:29:34,929 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:29:34,929 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:29:34,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-07 08:29:34,929 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:29:34,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:29:34,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1460430369, now seen corresponding path program 1 times [2021-11-07 08:29:34,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:29:34,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011140417] [2021-11-07 08:29:34,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:29:34,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:29:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:29:35,089 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 17 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:29:35,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:29:35,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011140417] [2021-11-07 08:29:35,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011140417] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:29:35,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614086990] [2021-11-07 08:29:35,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:29:35,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:29:35,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:29:35,095 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:29:35,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-07 08:29:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:29:37,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 08:29:37,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:29:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 17 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:29:37,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614086990] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:29:37,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:29:37,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-11-07 08:29:37,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882505059] [2021-11-07 08:29:37,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 08:29:37,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:29:37,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 08:29:37,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:29:37,653 INFO L87 Difference]: Start difference. First operand 15360 states and 18930 transitions. Second operand has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:29:59,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:29:59,176 INFO L93 Difference]: Finished difference Result 61370 states and 76963 transitions. [2021-11-07 08:29:59,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-11-07 08:29:59,177 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2021-11-07 08:29:59,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:29:59,238 INFO L225 Difference]: With dead ends: 61370 [2021-11-07 08:29:59,238 INFO L226 Difference]: Without dead ends: 48205 [2021-11-07 08:29:59,251 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=763, Invalid=3659, Unknown=0, NotChecked=0, Total=4422 [2021-11-07 08:29:59,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48205 states. [2021-11-07 08:30:05,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48205 to 16296. [2021-11-07 08:30:05,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16296 states, 16291 states have (on average 1.2271806518936836) internal successors, (19992), 16295 states have internal predecessors, (19992), 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) [2021-11-07 08:30:05,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16296 states to 16296 states and 19992 transitions. [2021-11-07 08:30:05,821 INFO L78 Accepts]: Start accepts. Automaton has 16296 states and 19992 transitions. Word has length 167 [2021-11-07 08:30:05,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:30:05,822 INFO L470 AbstractCegarLoop]: Abstraction has 16296 states and 19992 transitions. [2021-11-07 08:30:05,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:30:05,822 INFO L276 IsEmpty]: Start isEmpty. Operand 16296 states and 19992 transitions. [2021-11-07 08:30:05,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-07 08:30:05,827 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:30:05,828 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:30:05,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:06,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-11-07 08:30:06,043 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:30:06,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:06,044 INFO L85 PathProgramCache]: Analyzing trace with hash -346889036, now seen corresponding path program 1 times [2021-11-07 08:30:06,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:06,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906843693] [2021-11-07 08:30:06,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:06,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:06,188 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:30:06,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:30:06,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906843693] [2021-11-07 08:30:06,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906843693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:30:06,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:30:06,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:30:06,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132041842] [2021-11-07 08:30:06,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:30:06,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:30:06,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:30:06,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:30:06,193 INFO L87 Difference]: Start difference. First operand 16296 states and 19992 transitions. Second operand has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:30:22,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:30:22,746 INFO L93 Difference]: Finished difference Result 53646 states and 66384 transitions. [2021-11-07 08:30:22,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 08:30:22,746 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-11-07 08:30:22,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:30:22,795 INFO L225 Difference]: With dead ends: 53646 [2021-11-07 08:30:22,795 INFO L226 Difference]: Without dead ends: 39877 [2021-11-07 08:30:22,807 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2021-11-07 08:30:22,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39877 states. [2021-11-07 08:30:29,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39877 to 16328. [2021-11-07 08:30:29,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16328 states, 16323 states have (on average 1.2250199105556576) internal successors, (19996), 16327 states have internal predecessors, (19996), 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) [2021-11-07 08:30:29,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16328 states to 16328 states and 19996 transitions. [2021-11-07 08:30:29,421 INFO L78 Accepts]: Start accepts. Automaton has 16328 states and 19996 transitions. Word has length 169 [2021-11-07 08:30:29,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:30:29,421 INFO L470 AbstractCegarLoop]: Abstraction has 16328 states and 19996 transitions. [2021-11-07 08:30:29,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:30:29,422 INFO L276 IsEmpty]: Start isEmpty. Operand 16328 states and 19996 transitions. [2021-11-07 08:30:29,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-07 08:30:29,426 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:30:29,427 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:30:29,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-07 08:30:29,427 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:30:29,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:29,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1898690418, now seen corresponding path program 1 times [2021-11-07 08:30:29,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:29,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50824404] [2021-11-07 08:30:29,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:29,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:29,674 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:30:29,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:30:29,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50824404] [2021-11-07 08:30:29,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50824404] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:30:29,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078722970] [2021-11-07 08:30:29,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:29,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:30:29,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:29,683 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:30:29,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-07 08:30:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:31,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 929 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-07 08:30:31,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:33,452 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:30:33,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078722970] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:30:33,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:30:33,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-11-07 08:30:33,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958241724] [2021-11-07 08:30:33,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 08:30:33,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:30:33,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 08:30:33,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-11-07 08:30:33,454 INFO L87 Difference]: Start difference. First operand 16328 states and 19996 transitions. Second operand has 21 states, 21 states have (on average 14.285714285714286) internal successors, (300), 21 states have internal predecessors, (300), 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) [2021-11-07 08:31:19,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:31:19,476 INFO L93 Difference]: Finished difference Result 123034 states and 154607 transitions. [2021-11-07 08:31:19,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-11-07 08:31:19,477 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 14.285714285714286) internal successors, (300), 21 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-11-07 08:31:19,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:31:19,628 INFO L225 Difference]: With dead ends: 123034 [2021-11-07 08:31:19,628 INFO L226 Difference]: Without dead ends: 109419 [2021-11-07 08:31:19,653 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5222 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1920, Invalid=12600, Unknown=0, NotChecked=0, Total=14520 [2021-11-07 08:31:19,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109419 states. [2021-11-07 08:31:31,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109419 to 27931. [2021-11-07 08:31:31,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27931 states, 27926 states have (on average 1.2388813292272434) internal successors, (34597), 27930 states have internal predecessors, (34597), 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) [2021-11-07 08:31:31,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27931 states to 27931 states and 34597 transitions. [2021-11-07 08:31:31,540 INFO L78 Accepts]: Start accepts. Automaton has 27931 states and 34597 transitions. Word has length 169 [2021-11-07 08:31:31,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:31:31,540 INFO L470 AbstractCegarLoop]: Abstraction has 27931 states and 34597 transitions. [2021-11-07 08:31:31,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 14.285714285714286) internal successors, (300), 21 states have internal predecessors, (300), 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) [2021-11-07 08:31:31,541 INFO L276 IsEmpty]: Start isEmpty. Operand 27931 states and 34597 transitions. [2021-11-07 08:31:31,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-07 08:31:31,551 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:31:31,551 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:31:31,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-11-07 08:31:31,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-11-07 08:31:31,779 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:31:31,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:31,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2010414476, now seen corresponding path program 1 times [2021-11-07 08:31:31,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:31,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696807062] [2021-11-07 08:31:31,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:31,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:31,842 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-07 08:31:31,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:31:31,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696807062] [2021-11-07 08:31:31,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696807062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:31:31,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:31:31,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:31:31,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644083836] [2021-11-07 08:31:31,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:31:31,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:31:31,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:31:31,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:31:31,845 INFO L87 Difference]: Start difference. First operand 27931 states and 34597 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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) [2021-11-07 08:31:39,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:31:39,734 INFO L93 Difference]: Finished difference Result 45692 states and 56571 transitions. [2021-11-07 08:31:39,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:31:39,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-11-07 08:31:39,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:31:39,756 INFO L225 Difference]: With dead ends: 45692 [2021-11-07 08:31:39,757 INFO L226 Difference]: Without dead ends: 18753 [2021-11-07 08:31:39,768 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:31:39,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18753 states. [2021-11-07 08:31:47,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18753 to 18753. [2021-11-07 08:31:47,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18753 states, 18748 states have (on average 1.2288777469596757) internal successors, (23039), 18752 states have internal predecessors, (23039), 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) [2021-11-07 08:31:47,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18753 states to 18753 states and 23039 transitions. [2021-11-07 08:31:47,303 INFO L78 Accepts]: Start accepts. Automaton has 18753 states and 23039 transitions. Word has length 169 [2021-11-07 08:31:47,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:31:47,303 INFO L470 AbstractCegarLoop]: Abstraction has 18753 states and 23039 transitions. [2021-11-07 08:31:47,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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) [2021-11-07 08:31:47,303 INFO L276 IsEmpty]: Start isEmpty. Operand 18753 states and 23039 transitions. [2021-11-07 08:31:47,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-07 08:31:47,319 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:31:47,319 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:31:47,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-07 08:31:47,320 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-07 08:31:47,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:47,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2121329309, now seen corresponding path program 1 times [2021-11-07 08:31:47,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:47,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030971004] [2021-11-07 08:31:47,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:47,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:47,555 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 91 proven. 27 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 08:31:47,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:31:47,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030971004] [2021-11-07 08:31:47,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030971004] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:31:47,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246207323] [2021-11-07 08:31:47,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:47,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:31:47,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:31:47,558 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:31:47,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af97d40-ddda-413a-b7e0-07247d87d1c3/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process