./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_peterson.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_peterson.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0 --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 4a8be7009a37d1df58713fd67cd9771c39e6139a0416009824ceb58da10928b7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:11:13,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:11:13,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:11:13,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:11:13,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:11:13,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:11:13,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:11:13,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:11:13,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:11:13,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:11:13,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:11:13,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:11:13,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:11:13,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:11:13,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:11:13,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:11:13,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:11:13,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:11:13,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:11:13,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:11:13,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:11:13,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:11:13,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:11:13,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:11:13,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:11:13,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:11:13,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:11:13,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:11:13,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:11:13,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:11:13,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:11:13,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:11:13,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:11:13,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:11:13,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:11:13,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:11:13,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:11:13,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:11:13,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:11:13,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:11:13,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:11:13,972 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:11:14,014 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:11:14,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:11:14,014 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:11:14,015 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:11:14,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:11:14,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:11:14,016 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:11:14,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:11:14,017 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:11:14,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:11:14,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:11:14,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:11:14,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:11:14,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:11:14,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:11:14,018 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:11:14,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:11:14,019 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:11:14,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:11:14,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:11:14,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:11:14,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:11:14,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:11:14,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:11:14,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:11:14,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:11:14,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:11:14,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:11:14,021 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:11:14,022 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:11:14,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:11:14,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:11:14,022 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_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a8be7009a37d1df58713fd67cd9771c39e6139a0416009824ceb58da10928b7 [2021-11-22 15:11:14,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:11:14,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:11:14,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:11:14,297 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:11:14,298 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:11:14,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/seq-pthread/cs_peterson.i [2021-11-22 15:11:14,387 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/data/9444d63e7/7f12f3f8a5b847d88a30029a7b758cfa/FLAGd4cd06a15 [2021-11-22 15:11:14,997 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:11:14,998 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/sv-benchmarks/c/seq-pthread/cs_peterson.i [2021-11-22 15:11:15,018 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/data/9444d63e7/7f12f3f8a5b847d88a30029a7b758cfa/FLAGd4cd06a15 [2021-11-22 15:11:15,294 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/data/9444d63e7/7f12f3f8a5b847d88a30029a7b758cfa [2021-11-22 15:11:15,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:11:15,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:11:15,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:11:15,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:11:15,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:11:15,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:11:15" (1/1) ... [2021-11-22 15:11:15,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@426132b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:15, skipping insertion in model container [2021-11-22 15:11:15,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:11:15" (1/1) ... [2021-11-22 15:11:15,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:11:15,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:11:15,693 WARN L230 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_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/sv-benchmarks/c/seq-pthread/cs_peterson.i[23605,23618] [2021-11-22 15:11:15,832 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:11:15,845 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:11:15,876 WARN L230 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_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/sv-benchmarks/c/seq-pthread/cs_peterson.i[23605,23618] [2021-11-22 15:11:15,998 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:11:16,061 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:11:16,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:16 WrapperNode [2021-11-22 15:11:16,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:11:16,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:11:16,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:11:16,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:11:16,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:16" (1/1) ... [2021-11-22 15:11:16,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:16" (1/1) ... [2021-11-22 15:11:16,197 INFO L137 Inliner]: procedures = 145, calls = 276, calls flagged for inlining = 62, calls inlined = 77, statements flattened = 1160 [2021-11-22 15:11:16,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:11:16,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:11:16,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:11:16,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:11:16,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:16" (1/1) ... [2021-11-22 15:11:16,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:16" (1/1) ... [2021-11-22 15:11:16,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:16" (1/1) ... [2021-11-22 15:11:16,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:16" (1/1) ... [2021-11-22 15:11:16,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:16" (1/1) ... [2021-11-22 15:11:16,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:16" (1/1) ... [2021-11-22 15:11:16,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:16" (1/1) ... [2021-11-22 15:11:16,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:11:16,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:11:16,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:11:16,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:11:16,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:16" (1/1) ... [2021-11-22 15:11:16,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:11:16,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:16,368 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:11:16,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:11:16,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 15:11:16,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 15:11:16,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:11:16,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 15:11:16,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 15:11:16,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 15:11:16,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 15:11:16,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 15:11:16,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:11:16,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:11:16,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:11:16,592 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:11:16,594 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:11:20,203 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:11:20,220 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:11:20,220 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-22 15:11:20,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:11:20 BoogieIcfgContainer [2021-11-22 15:11:20,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:11:20,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:11:20,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:11:20,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:11:20,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:11:15" (1/3) ... [2021-11-22 15:11:20,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b87d452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:11:20, skipping insertion in model container [2021-11-22 15:11:20,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:16" (2/3) ... [2021-11-22 15:11:20,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b87d452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:11:20, skipping insertion in model container [2021-11-22 15:11:20,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:11:20" (3/3) ... [2021-11-22 15:11:20,235 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_peterson.i [2021-11-22 15:11:20,247 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:11:20,248 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 15:11:20,333 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:11:20,345 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 [2021-11-22 15:11:20,345 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 15:11:20,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 213 states, 211 states have (on average 1.5355450236966826) internal successors, (324), 212 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:20,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-22 15:11:20,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:20,419 INFO L514 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] [2021-11-22 15:11:20,419 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:11:20,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:20,424 INFO L85 PathProgramCache]: Analyzing trace with hash -346069813, now seen corresponding path program 1 times [2021-11-22 15:11:20,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:20,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414571696] [2021-11-22 15:11:20,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:20,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:20,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:20,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:20,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414571696] [2021-11-22 15:11:20,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414571696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:20,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:11:20,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:11:20,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261013070] [2021-11-22 15:11:20,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:20,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:11:20,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:20,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:11:20,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:11:20,920 INFO L87 Difference]: Start difference. First operand has 213 states, 211 states have (on average 1.5355450236966826) internal successors, (324), 212 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:21,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:21,016 INFO L93 Difference]: Finished difference Result 428 states and 654 transitions. [2021-11-22 15:11:21,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:11:21,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-11-22 15:11:21,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:21,033 INFO L225 Difference]: With dead ends: 428 [2021-11-22 15:11:21,033 INFO L226 Difference]: Without dead ends: 213 [2021-11-22 15:11:21,037 INFO L932 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 [2021-11-22 15:11:21,041 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 4 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:21,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 552 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:11:21,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-22 15:11:21,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 210. [2021-11-22 15:11:21,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.325358851674641) internal successors, (277), 209 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:21,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 277 transitions. [2021-11-22 15:11:21,119 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 277 transitions. Word has length 52 [2021-11-22 15:11:21,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:21,119 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 277 transitions. [2021-11-22 15:11:21,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:21,120 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 277 transitions. [2021-11-22 15:11:21,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-22 15:11:21,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:21,124 INFO L514 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] [2021-11-22 15:11:21,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:11:21,125 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:11:21,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:21,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1295556397, now seen corresponding path program 1 times [2021-11-22 15:11:21,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:21,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316682623] [2021-11-22 15:11:21,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:21,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:21,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:21,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:21,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316682623] [2021-11-22 15:11:21,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316682623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:21,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:11:21,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:11:21,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844860818] [2021-11-22 15:11:21,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:21,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:11:21,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:21,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:11:21,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:11:21,289 INFO L87 Difference]: Start difference. First operand 210 states and 277 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 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) [2021-11-22 15:11:21,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:21,353 INFO L93 Difference]: Finished difference Result 419 states and 554 transitions. [2021-11-22 15:11:21,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:11:21,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 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 [2021-11-22 15:11:21,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:21,362 INFO L225 Difference]: With dead ends: 419 [2021-11-22 15:11:21,365 INFO L226 Difference]: Without dead ends: 212 [2021-11-22 15:11:21,367 INFO L932 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 [2021-11-22 15:11:21,372 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 1 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:21,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 545 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:11:21,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-22 15:11:21,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 211. [2021-11-22 15:11:21,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.3238095238095238) internal successors, (278), 210 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:21,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 278 transitions. [2021-11-22 15:11:21,395 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 278 transitions. Word has length 55 [2021-11-22 15:11:21,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:21,395 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 278 transitions. [2021-11-22 15:11:21,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 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) [2021-11-22 15:11:21,396 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 278 transitions. [2021-11-22 15:11:21,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-22 15:11:21,400 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:21,400 INFO L514 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] [2021-11-22 15:11:21,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:11:21,401 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:11:21,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:21,401 INFO L85 PathProgramCache]: Analyzing trace with hash 70842453, now seen corresponding path program 1 times [2021-11-22 15:11:21,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:21,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718672968] [2021-11-22 15:11:21,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:21,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:21,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:21,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718672968] [2021-11-22 15:11:21,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718672968] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:11:21,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868376403] [2021-11-22 15:11:21,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:21,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:21,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:21,535 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:11:21,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:11:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:21,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:11:21,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:11:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:22,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:11:22,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:22,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868376403] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:11:22,335 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:11:22,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-11-22 15:11:22,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290211043] [2021-11-22 15:11:22,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:11:22,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:11:22,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:22,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:11:22,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:11:22,344 INFO L87 Difference]: Start difference. First operand 211 states and 278 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:22,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:22,417 INFO L93 Difference]: Finished difference Result 423 states and 559 transitions. [2021-11-22 15:11:22,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:11:22,418 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 [2021-11-22 15:11:22,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:22,422 INFO L225 Difference]: With dead ends: 423 [2021-11-22 15:11:22,422 INFO L226 Difference]: Without dead ends: 215 [2021-11-22 15:11:22,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:11:22,429 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 3 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:22,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1087 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:11:22,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-22 15:11:22,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2021-11-22 15:11:22,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.3177570093457944) internal successors, (282), 214 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) [2021-11-22 15:11:22,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 282 transitions. [2021-11-22 15:11:22,463 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 282 transitions. Word has length 57 [2021-11-22 15:11:22,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:22,464 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 282 transitions. [2021-11-22 15:11:22,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:22,464 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 282 transitions. [2021-11-22 15:11:22,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-22 15:11:22,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:22,476 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:11:22,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:11:22,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:22,695 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:11:22,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:22,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1201192409, now seen corresponding path program 2 times [2021-11-22 15:11:22,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:22,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286014099] [2021-11-22 15:11:22,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:22,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:22,819 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:11:22,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:22,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286014099] [2021-11-22 15:11:22,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286014099] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:11:22,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915196087] [2021-11-22 15:11:22,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:11:22,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:22,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:22,822 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:11:22,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 15:11:23,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-22 15:11:23,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:11:23,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:11:23,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:11:23,445 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-22 15:11:23,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:11:23,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915196087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:23,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:11:23,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-22 15:11:23,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994317005] [2021-11-22 15:11:23,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:23,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:11:23,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:23,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:11:23,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:11:23,454 INFO L87 Difference]: Start difference. First operand 215 states and 282 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 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) [2021-11-22 15:11:23,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:23,525 INFO L93 Difference]: Finished difference Result 388 states and 507 transitions. [2021-11-22 15:11:23,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:11:23,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 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 61 [2021-11-22 15:11:23,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:23,529 INFO L225 Difference]: With dead ends: 388 [2021-11-22 15:11:23,529 INFO L226 Difference]: Without dead ends: 332 [2021-11-22 15:11:23,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:11:23,537 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 208 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:23,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 931 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:11:23,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-11-22 15:11:23,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2021-11-22 15:11:23,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.3353474320241692) internal successors, (442), 331 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:23,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 442 transitions. [2021-11-22 15:11:23,564 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 442 transitions. Word has length 61 [2021-11-22 15:11:23,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:23,566 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 442 transitions. [2021-11-22 15:11:23,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 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) [2021-11-22 15:11:23,567 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 442 transitions. [2021-11-22 15:11:23,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-22 15:11:23,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:23,570 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:11:23,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:11:23,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:23,789 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:11:23,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:23,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1892307192, now seen corresponding path program 1 times [2021-11-22 15:11:23,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:23,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834534571] [2021-11-22 15:11:23,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:23,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:11:23,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:23,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834534571] [2021-11-22 15:11:23,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834534571] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:11:23,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555711718] [2021-11-22 15:11:23,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:23,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:23,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:23,979 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:11:24,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 15:11:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:24,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:11:24,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:11:24,482 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:11:24,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:11:24,837 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:11:24,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555711718] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:11:24,837 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:11:24,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-11-22 15:11:24,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839966830] [2021-11-22 15:11:24,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:11:24,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:11:24,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:24,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:11:24,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:11:24,840 INFO L87 Difference]: Start difference. First operand 332 states and 442 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:24,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:24,939 INFO L93 Difference]: Finished difference Result 670 states and 892 transitions. [2021-11-22 15:11:24,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:11:24,940 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 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 94 [2021-11-22 15:11:24,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:24,943 INFO L225 Difference]: With dead ends: 670 [2021-11-22 15:11:24,944 INFO L226 Difference]: Without dead ends: 350 [2021-11-22 15:11:24,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:11:24,946 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 12 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:24,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 817 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:11:24,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-11-22 15:11:24,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2021-11-22 15:11:24,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 1.32378223495702) internal successors, (462), 349 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:24,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 462 transitions. [2021-11-22 15:11:24,967 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 462 transitions. Word has length 94 [2021-11-22 15:11:24,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:24,968 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 462 transitions. [2021-11-22 15:11:24,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:24,969 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 462 transitions. [2021-11-22 15:11:24,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-22 15:11:24,977 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:24,978 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:11:25,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:11:25,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:25,203 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:11:25,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:25,204 INFO L85 PathProgramCache]: Analyzing trace with hash 563804472, now seen corresponding path program 2 times [2021-11-22 15:11:25,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:25,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472534947] [2021-11-22 15:11:25,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:25,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-22 15:11:25,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:25,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472534947] [2021-11-22 15:11:25,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472534947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:25,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:11:25,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:11:25,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516076719] [2021-11-22 15:11:25,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:25,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:11:25,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:25,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:11:25,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:11:25,551 INFO L87 Difference]: Start difference. First operand 350 states and 462 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:25,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:25,777 INFO L93 Difference]: Finished difference Result 725 states and 962 transitions. [2021-11-22 15:11:25,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:11:25,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 112 [2021-11-22 15:11:25,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:25,781 INFO L225 Difference]: With dead ends: 725 [2021-11-22 15:11:25,781 INFO L226 Difference]: Without dead ends: 414 [2021-11-22 15:11:25,782 INFO L932 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 [2021-11-22 15:11:25,783 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 126 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:25,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 558 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:11:25,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-11-22 15:11:25,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2021-11-22 15:11:25,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 1.305084745762712) internal successors, (539), 413 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:25,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 539 transitions. [2021-11-22 15:11:25,800 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 539 transitions. Word has length 112 [2021-11-22 15:11:25,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:25,801 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 539 transitions. [2021-11-22 15:11:25,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:25,801 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 539 transitions. [2021-11-22 15:11:25,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-22 15:11:25,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:25,804 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:11:25,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 15:11:25,804 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:11:25,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:25,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1243076726, now seen corresponding path program 1 times [2021-11-22 15:11:25,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:25,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638710219] [2021-11-22 15:11:25,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:25,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:29,290 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-22 15:11:29,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:29,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638710219] [2021-11-22 15:11:29,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638710219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:29,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:11:29,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-22 15:11:29,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469004872] [2021-11-22 15:11:29,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:29,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 15:11:29,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:29,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 15:11:29,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-22 15:11:29,292 INFO L87 Difference]: Start difference. First operand 414 states and 539 transitions. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:31,464 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 15:11:36,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:36,132 INFO L93 Difference]: Finished difference Result 904 states and 1179 transitions. [2021-11-22 15:11:36,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 15:11:36,133 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 0 states have call successors, (0), 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 112 [2021-11-22 15:11:36,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:36,139 INFO L225 Difference]: With dead ends: 904 [2021-11-22 15:11:36,139 INFO L226 Difference]: Without dead ends: 731 [2021-11-22 15:11:36,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2021-11-22 15:11:36,141 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 716 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:36,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [716 Valid, 3073 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1435 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2021-11-22 15:11:36,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2021-11-22 15:11:36,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 450. [2021-11-22 15:11:36,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 1.2962138084632517) internal successors, (582), 449 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:36,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 582 transitions. [2021-11-22 15:11:36,171 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 582 transitions. Word has length 112 [2021-11-22 15:11:36,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:36,171 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 582 transitions. [2021-11-22 15:11:36,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:36,172 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 582 transitions. [2021-11-22 15:11:36,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-22 15:11:36,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:36,175 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:11:36,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:11:36,175 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:11:36,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:36,176 INFO L85 PathProgramCache]: Analyzing trace with hash 511109300, now seen corresponding path program 1 times [2021-11-22 15:11:36,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:36,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180485120] [2021-11-22 15:11:36,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:36,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-22 15:11:41,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:41,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180485120] [2021-11-22 15:11:41,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180485120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:41,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:11:41,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 15:11:41,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339053369] [2021-11-22 15:11:41,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:41,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 15:11:41,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:41,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 15:11:41,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:11:41,511 INFO L87 Difference]: Start difference. First operand 450 states and 582 transitions. Second operand has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:43,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 15:11:47,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:47,102 INFO L93 Difference]: Finished difference Result 933 states and 1202 transitions. [2021-11-22 15:11:47,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 15:11:47,103 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 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 112 [2021-11-22 15:11:47,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:47,109 INFO L225 Difference]: With dead ends: 933 [2021-11-22 15:11:47,109 INFO L226 Difference]: Without dead ends: 760 [2021-11-22 15:11:47,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-11-22 15:11:47,111 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 692 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 48 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:47,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [692 Valid, 1706 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 577 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2021-11-22 15:11:47,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2021-11-22 15:11:47,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 464. [2021-11-22 15:11:47,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 1.2915766738660908) internal successors, (598), 463 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:47,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 598 transitions. [2021-11-22 15:11:47,146 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 598 transitions. Word has length 112 [2021-11-22 15:11:47,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:47,147 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 598 transitions. [2021-11-22 15:11:47,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:47,147 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 598 transitions. [2021-11-22 15:11:47,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-22 15:11:47,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:47,150 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:11:47,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 15:11:47,150 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:11:47,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:47,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1297571785, now seen corresponding path program 1 times [2021-11-22 15:11:47,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:47,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939429694] [2021-11-22 15:11:47,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:47,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:47,260 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-22 15:11:47,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:47,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939429694] [2021-11-22 15:11:47,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939429694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:47,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:11:47,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:11:47,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226552019] [2021-11-22 15:11:47,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:47,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:11:47,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:47,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:11:47,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:11:47,264 INFO L87 Difference]: Start difference. First operand 464 states and 598 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:47,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:47,369 INFO L93 Difference]: Finished difference Result 768 states and 1008 transitions. [2021-11-22 15:11:47,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:11:47,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 115 [2021-11-22 15:11:47,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:47,375 INFO L225 Difference]: With dead ends: 768 [2021-11-22 15:11:47,375 INFO L226 Difference]: Without dead ends: 474 [2021-11-22 15:11:47,376 INFO L932 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 [2021-11-22 15:11:47,379 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 0 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:47,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 505 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:11:47,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-11-22 15:11:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 474. [2021-11-22 15:11:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 473 states have (on average 1.2832980972515857) internal successors, (607), 473 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:47,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 607 transitions. [2021-11-22 15:11:47,411 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 607 transitions. Word has length 115 [2021-11-22 15:11:47,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:47,413 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 607 transitions. [2021-11-22 15:11:47,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:47,413 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 607 transitions. [2021-11-22 15:11:47,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-22 15:11:47,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:47,416 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:11:47,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 15:11:47,416 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:11:47,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:47,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1338246535, now seen corresponding path program 1 times [2021-11-22 15:11:47,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:47,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586411467] [2021-11-22 15:11:47,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:47,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:52,813 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-22 15:11:52,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:52,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586411467] [2021-11-22 15:11:52,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586411467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:52,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:11:52,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:11:52,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932049413] [2021-11-22 15:11:52,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:52,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:11:52,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:52,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:11:52,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:11:52,817 INFO L87 Difference]: Start difference. First operand 474 states and 607 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:55,032 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 15:11:55,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:55,812 INFO L93 Difference]: Finished difference Result 567 states and 715 transitions. [2021-11-22 15:11:55,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:11:55,813 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 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 115 [2021-11-22 15:11:55,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:55,818 INFO L225 Difference]: With dead ends: 567 [2021-11-22 15:11:55,818 INFO L226 Difference]: Without dead ends: 429 [2021-11-22 15:11:55,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:11:55,820 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 33 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:55,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 879 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 214 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2021-11-22 15:11:55,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-11-22 15:11:55,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2021-11-22 15:11:55,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.2897196261682242) internal successors, (552), 428 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:55,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 552 transitions. [2021-11-22 15:11:55,862 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 552 transitions. Word has length 115 [2021-11-22 15:11:55,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:55,863 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 552 transitions. [2021-11-22 15:11:55,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:55,864 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 552 transitions. [2021-11-22 15:11:55,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-22 15:11:55,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:55,867 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:11:55,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 15:11:55,867 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:11:55,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:55,868 INFO L85 PathProgramCache]: Analyzing trace with hash 8143367, now seen corresponding path program 1 times [2021-11-22 15:11:55,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:55,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402246076] [2021-11-22 15:11:55,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:55,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:03,889 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-22 15:12:03,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:12:03,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402246076] [2021-11-22 15:12:03,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402246076] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:12:03,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:12:03,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:12:03,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327166144] [2021-11-22 15:12:03,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:12:03,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:12:03,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:12:03,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:12:03,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:12:03,892 INFO L87 Difference]: Start difference. First operand 429 states and 552 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:06,054 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 15:12:06,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:12:06,588 INFO L93 Difference]: Finished difference Result 644 states and 825 transitions. [2021-11-22 15:12:06,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:12:06,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 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 115 [2021-11-22 15:12:06,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:12:06,591 INFO L225 Difference]: With dead ends: 644 [2021-11-22 15:12:06,591 INFO L226 Difference]: Without dead ends: 384 [2021-11-22 15:12:06,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:12:06,593 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 21 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:12:06,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 1061 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 267 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2021-11-22 15:12:06,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-11-22 15:12:06,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2021-11-22 15:12:06,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 1.2950391644908616) internal successors, (496), 383 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 496 transitions. [2021-11-22 15:12:06,616 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 496 transitions. Word has length 115 [2021-11-22 15:12:06,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:12:06,617 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 496 transitions. [2021-11-22 15:12:06,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:06,617 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 496 transitions. [2021-11-22 15:12:06,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-22 15:12:06,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:12:06,619 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:12:06,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 15:12:06,620 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:12:06,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:06,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1679253127, now seen corresponding path program 1 times [2021-11-22 15:12:06,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:06,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260103607] [2021-11-22 15:12:06,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:06,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-22 15:12:10,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:12:10,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260103607] [2021-11-22 15:12:10,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260103607] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:12:10,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:12:10,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:12:10,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916175001] [2021-11-22 15:12:10,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:12:10,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:12:10,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:12:10,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:12:10,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:12:10,560 INFO L87 Difference]: Start difference. First operand 384 states and 496 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:11,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:12:11,131 INFO L93 Difference]: Finished difference Result 951 states and 1212 transitions. [2021-11-22 15:12:11,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:12:11,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 115 [2021-11-22 15:12:11,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:12:11,135 INFO L225 Difference]: With dead ends: 951 [2021-11-22 15:12:11,135 INFO L226 Difference]: Without dead ends: 586 [2021-11-22 15:12:11,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:12:11,138 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 470 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:12:11,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 599 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 15:12:11,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-11-22 15:12:11,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 450. [2021-11-22 15:12:11,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 1.2383073496659243) internal successors, (556), 449 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:11,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 556 transitions. [2021-11-22 15:12:11,171 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 556 transitions. Word has length 115 [2021-11-22 15:12:11,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:12:11,171 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 556 transitions. [2021-11-22 15:12:11,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:11,172 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 556 transitions. [2021-11-22 15:12:11,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-22 15:12:11,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:12:11,174 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:12:11,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 15:12:11,175 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:12:11,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:11,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1319159949, now seen corresponding path program 1 times [2021-11-22 15:12:11,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:11,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732571666] [2021-11-22 15:12:11,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:11,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:20,790 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-22 15:12:20,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:12:20,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732571666] [2021-11-22 15:12:20,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732571666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:12:20,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:12:20,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-22 15:12:20,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137856632] [2021-11-22 15:12:20,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:12:20,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 15:12:20,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:12:20,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 15:12:20,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-22 15:12:20,793 INFO L87 Difference]: Start difference. First operand 450 states and 556 transitions. Second operand has 12 states, 12 states have (on average 7.75) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:22,976 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 15:12:24,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:12:24,641 INFO L93 Difference]: Finished difference Result 831 states and 1011 transitions. [2021-11-22 15:12:24,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 15:12:24,642 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 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 115 [2021-11-22 15:12:24,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:12:24,647 INFO L225 Difference]: With dead ends: 831 [2021-11-22 15:12:24,647 INFO L226 Difference]: Without dead ends: 666 [2021-11-22 15:12:24,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-11-22 15:12:24,648 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 354 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:12:24,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 1572 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 677 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2021-11-22 15:12:24,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-11-22 15:12:24,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 450. [2021-11-22 15:12:24,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 1.2316258351893097) internal successors, (553), 449 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:24,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 553 transitions. [2021-11-22 15:12:24,677 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 553 transitions. Word has length 115 [2021-11-22 15:12:24,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:12:24,677 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 553 transitions. [2021-11-22 15:12:24,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:24,678 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 553 transitions. [2021-11-22 15:12:24,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-22 15:12:24,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:12:24,680 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:12:24,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 15:12:24,680 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:12:24,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:24,681 INFO L85 PathProgramCache]: Analyzing trace with hash -577938430, now seen corresponding path program 1 times [2021-11-22 15:12:24,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:24,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613310971] [2021-11-22 15:12:24,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:24,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:29,969 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-22 15:12:29,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:12:29,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613310971] [2021-11-22 15:12:29,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613310971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:12:29,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:12:29,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 15:12:29,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540219872] [2021-11-22 15:12:29,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:12:29,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 15:12:29,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:12:29,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 15:12:29,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:12:29,971 INFO L87 Difference]: Start difference. First operand 450 states and 553 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:32,032 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 15:12:33,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:12:33,395 INFO L93 Difference]: Finished difference Result 568 states and 677 transitions. [2021-11-22 15:12:33,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:12:33,396 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 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 124 [2021-11-22 15:12:33,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:12:33,399 INFO L225 Difference]: With dead ends: 568 [2021-11-22 15:12:33,400 INFO L226 Difference]: Without dead ends: 524 [2021-11-22 15:12:33,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:12:33,401 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 475 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:12:33,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 1725 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 506 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2021-11-22 15:12:33,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-11-22 15:12:33,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 455. [2021-11-22 15:12:33,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 1.2312775330396475) internal successors, (559), 454 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:33,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 559 transitions. [2021-11-22 15:12:33,432 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 559 transitions. Word has length 124 [2021-11-22 15:12:33,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:12:33,433 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 559 transitions. [2021-11-22 15:12:33,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:33,433 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 559 transitions. [2021-11-22 15:12:33,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-22 15:12:33,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:12:33,435 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:12:33,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 15:12:33,436 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:12:33,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:33,437 INFO L85 PathProgramCache]: Analyzing trace with hash -400560534, now seen corresponding path program 1 times [2021-11-22 15:12:33,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:33,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549705653] [2021-11-22 15:12:33,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:33,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:33,857 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-22 15:12:33,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:12:33,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549705653] [2021-11-22 15:12:33,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549705653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:12:33,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:12:33,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 15:12:33,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996985641] [2021-11-22 15:12:33,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:12:33,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 15:12:33,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:12:33,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 15:12:33,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:12:33,860 INFO L87 Difference]: Start difference. First operand 455 states and 559 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:35,922 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 15:12:37,945 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 15:12:38,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:12:38,936 INFO L93 Difference]: Finished difference Result 940 states and 1148 transitions. [2021-11-22 15:12:38,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 15:12:38,937 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 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 129 [2021-11-22 15:12:38,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:12:38,941 INFO L225 Difference]: With dead ends: 940 [2021-11-22 15:12:38,941 INFO L226 Difference]: Without dead ends: 707 [2021-11-22 15:12:38,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-22 15:12:38,942 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 320 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 21 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:12:38,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 1914 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 503 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2021-11-22 15:12:38,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2021-11-22 15:12:38,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 487. [2021-11-22 15:12:38,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 486 states have (on average 1.2242798353909465) internal successors, (595), 486 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:38,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 595 transitions. [2021-11-22 15:12:38,975 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 595 transitions. Word has length 129 [2021-11-22 15:12:38,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:12:38,976 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 595 transitions. [2021-11-22 15:12:38,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:38,976 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 595 transitions. [2021-11-22 15:12:38,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-22 15:12:38,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:12:38,978 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:12:38,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 15:12:38,979 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:12:38,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:38,979 INFO L85 PathProgramCache]: Analyzing trace with hash -730761645, now seen corresponding path program 1 times [2021-11-22 15:12:38,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:38,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088937984] [2021-11-22 15:12:38,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:38,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:45,197 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-22 15:12:45,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:12:45,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088937984] [2021-11-22 15:12:45,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088937984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:12:45,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:12:45,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-22 15:12:45,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186482860] [2021-11-22 15:12:45,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:12:45,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 15:12:45,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:12:45,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 15:12:45,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:12:45,200 INFO L87 Difference]: Start difference. First operand 487 states and 595 transitions. Second operand has 13 states, 13 states have (on average 8.461538461538462) internal successors, (110), 12 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:47,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 15:12:49,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:12:49,527 INFO L93 Difference]: Finished difference Result 979 states and 1201 transitions. [2021-11-22 15:12:49,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 15:12:49,528 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.461538461538462) internal successors, (110), 12 states have internal predecessors, (110), 0 states have call successors, (0), 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 [2021-11-22 15:12:49,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:12:49,532 INFO L225 Difference]: With dead ends: 979 [2021-11-22 15:12:49,533 INFO L226 Difference]: Without dead ends: 935 [2021-11-22 15:12:49,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-11-22 15:12:49,534 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 1452 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 117 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-22 15:12:49,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1452 Valid, 1470 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 912 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2021-11-22 15:12:49,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2021-11-22 15:12:49,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 572. [2021-11-22 15:12:49,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 1.2469352014010509) internal successors, (712), 571 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:49,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 712 transitions. [2021-11-22 15:12:49,577 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 712 transitions. Word has length 132 [2021-11-22 15:12:49,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:12:49,578 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 712 transitions. [2021-11-22 15:12:49,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.461538461538462) internal successors, (110), 12 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:49,578 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 712 transitions. [2021-11-22 15:12:49,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-22 15:12:49,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:12:49,581 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:12:49,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 15:12:49,581 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:12:49,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:49,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1724422063, now seen corresponding path program 1 times [2021-11-22 15:12:49,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:49,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536047538] [2021-11-22 15:12:49,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:49,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:57,245 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-22 15:12:57,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:12:57,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536047538] [2021-11-22 15:12:57,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536047538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:12:57,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:12:57,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-22 15:12:57,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848583606] [2021-11-22 15:12:57,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:12:57,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 15:12:57,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:12:57,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 15:12:57,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-11-22 15:12:57,248 INFO L87 Difference]: Start difference. First operand 572 states and 712 transitions. Second operand has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 11 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:59,499 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 15:13:02,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:02,932 INFO L93 Difference]: Finished difference Result 789 states and 945 transitions. [2021-11-22 15:13:02,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:13:02,932 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 11 states have internal predecessors, (110), 0 states have call successors, (0), 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 [2021-11-22 15:13:02,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:02,937 INFO L225 Difference]: With dead ends: 789 [2021-11-22 15:13:02,937 INFO L226 Difference]: Without dead ends: 745 [2021-11-22 15:13:02,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-11-22 15:13:02,938 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 577 mSDsluCounter, 2322 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 2662 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:13:02,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 2662 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1151 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2021-11-22 15:13:02,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2021-11-22 15:13:02,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 575. [2021-11-22 15:13:02,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 1.245644599303136) internal successors, (715), 574 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:02,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 715 transitions. [2021-11-22 15:13:02,990 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 715 transitions. Word has length 132 [2021-11-22 15:13:02,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:13:02,991 INFO L470 AbstractCegarLoop]: Abstraction has 575 states and 715 transitions. [2021-11-22 15:13:02,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 11 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:02,992 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 715 transitions. [2021-11-22 15:13:02,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-22 15:13:02,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:02,994 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:13:02,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 15:13:02,995 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:13:02,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:02,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1765096813, now seen corresponding path program 1 times [2021-11-22 15:13:02,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:02,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522579254] [2021-11-22 15:13:02,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:02,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:03,485 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-22 15:13:03,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:13:03,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522579254] [2021-11-22 15:13:03,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522579254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:13:03,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:13:03,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:13:03,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817393046] [2021-11-22 15:13:03,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:13:03,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:13:03,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:13:03,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:13:03,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:13:03,489 INFO L87 Difference]: Start difference. First operand 575 states and 715 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:05,514 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 15:13:07,540 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 15:13:07,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:07,722 INFO L93 Difference]: Finished difference Result 877 states and 1093 transitions. [2021-11-22 15:13:07,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:13:07,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 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 [2021-11-22 15:13:07,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:07,727 INFO L225 Difference]: With dead ends: 877 [2021-11-22 15:13:07,727 INFO L226 Difference]: Without dead ends: 531 [2021-11-22 15:13:07,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:13:07,729 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 244 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:13:07,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 851 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2021-11-22 15:13:07,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-11-22 15:13:07,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 531. [2021-11-22 15:13:07,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 530 states have (on average 1.2226415094339622) internal successors, (648), 530 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:07,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 648 transitions. [2021-11-22 15:13:07,769 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 648 transitions. Word has length 132 [2021-11-22 15:13:07,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:13:07,770 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 648 transitions. [2021-11-22 15:13:07,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:07,770 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 648 transitions. [2021-11-22 15:13:07,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-22 15:13:07,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:07,771 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:13:07,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 15:13:07,772 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:13:07,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:07,772 INFO L85 PathProgramCache]: Analyzing trace with hash 522986861, now seen corresponding path program 1 times [2021-11-22 15:13:07,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:07,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616838201] [2021-11-22 15:13:07,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:07,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:16,537 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-22 15:13:16,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:13:16,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616838201] [2021-11-22 15:13:16,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616838201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:13:16,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:13:16,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:13:16,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025185223] [2021-11-22 15:13:16,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:13:16,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:13:16,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:13:16,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:13:16,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:13:16,540 INFO L87 Difference]: Start difference. First operand 531 states and 648 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:17,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:17,009 INFO L93 Difference]: Finished difference Result 1014 states and 1226 transitions. [2021-11-22 15:13:17,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:13:17,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 [2021-11-22 15:13:17,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:17,013 INFO L225 Difference]: With dead ends: 1014 [2021-11-22 15:13:17,014 INFO L226 Difference]: Without dead ends: 613 [2021-11-22 15:13:17,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:13:17,015 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 79 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:13:17,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 601 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:13:17,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-11-22 15:13:17,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 555. [2021-11-22 15:13:17,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 554 states have (on average 1.2129963898916967) internal successors, (672), 554 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:17,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 672 transitions. [2021-11-22 15:13:17,062 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 672 transitions. Word has length 133 [2021-11-22 15:13:17,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:13:17,063 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 672 transitions. [2021-11-22 15:13:17,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:17,063 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 672 transitions. [2021-11-22 15:13:17,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-22 15:13:17,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:17,066 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:13:17,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 15:13:17,067 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:13:17,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:17,068 INFO L85 PathProgramCache]: Analyzing trace with hash -871582997, now seen corresponding path program 1 times [2021-11-22 15:13:17,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:17,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228737001] [2021-11-22 15:13:17,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:17,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:21,481 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 15:14:21,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:21,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228737001] [2021-11-22 15:14:21,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228737001] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:14:21,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852550170] [2021-11-22 15:14:21,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:21,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:14:21,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:14:21,483 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:14:21,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae75c06-9f5f-4667-bb6d-0f9bb1114bce/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 15:14:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:25,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 188 conjunts are in the unsatisfiable core [2021-11-22 15:14:25,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:14:27,427 INFO L354 Elim1Store]: treesize reduction 1564, result has 14.2 percent of original size [2021-11-22 15:14:27,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 14 select indices, 14 select index equivalence classes, 28 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 81 case distinctions, treesize of input 152 treesize of output 365 [2021-11-22 15:14:29,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 46 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 57 [2021-11-22 15:14:30,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 25 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 25 [2021-11-22 15:14:32,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 25 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 25 [2021-11-22 15:14:33,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 25 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 25 [2021-11-22 15:14:37,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 46 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 57 [2021-11-22 15:14:39,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 25 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 25 [2021-11-22 15:14:42,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 25 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 25 [2021-11-22 15:14:44,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 25 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 25 [2021-11-22 15:14:48,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 46 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 57 [2021-11-22 15:14:49,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 25 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 25 [2021-11-22 15:14:52,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 25 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 25 [2021-11-22 15:14:55,370 INFO L354 Elim1Store]: treesize reduction 119, result has 15.6 percent of original size [2021-11-22 15:14:55,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 122 treesize of output 82