./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8fe6fb83fb08ef54afbd8d78d8c97f9d20e73a7ae4eae7f287d2ff90296f8470 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:14:07,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:14:07,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:14:07,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:14:07,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:14:07,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:14:07,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:14:07,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:14:07,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:14:07,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:14:07,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:14:07,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:14:07,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:14:07,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:14:07,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:14:07,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:14:07,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:14:07,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:14:07,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:14:07,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:14:07,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:14:07,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:14:07,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:14:07,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:14:07,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:14:07,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:14:07,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:14:07,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:14:07,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:14:07,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:14:07,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:14:07,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:14:07,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:14:07,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:14:07,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:14:07,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:14:07,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:14:07,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:14:07,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:14:07,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:14:07,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:14:07,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:14:07,601 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:14:07,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:14:07,602 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:14:07,602 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:14:07,603 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:14:07,603 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:14:07,604 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:14:07,604 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:14:07,604 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:14:07,604 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:14:07,604 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:14:07,605 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:14:07,605 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:14:07,605 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:14:07,605 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:14:07,606 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:14:07,606 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:14:07,606 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:14:07,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:14:07,607 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:14:07,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:14:07,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:14:07,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:14:07,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:14:07,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:14:07,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:14:07,609 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:14:07,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:14:07,609 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:14:07,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:14:07,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:14:07,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:14:07,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:14:07,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:14:07,611 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:14:07,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:14:07,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:14:07,612 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:14:07,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:14:07,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:14:07,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:14:07,613 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_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fe6fb83fb08ef54afbd8d78d8c97f9d20e73a7ae4eae7f287d2ff90296f8470 [2022-11-23 14:14:07,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:14:07,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:14:07,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:14:07,868 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:14:07,869 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:14:07,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/eca-rers2012/Problem02_label06.c [2022-11-23 14:14:10,888 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:14:11,161 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:14:11,162 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/sv-benchmarks/c/eca-rers2012/Problem02_label06.c [2022-11-23 14:14:11,173 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/data/65b41b508/7653111408514370876aa0a79a027725/FLAG39bd07318 [2022-11-23 14:14:11,188 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/data/65b41b508/7653111408514370876aa0a79a027725 [2022-11-23 14:14:11,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:14:11,192 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:14:11,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:14:11,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:14:11,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:14:11,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:14:11" (1/1) ... [2022-11-23 14:14:11,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@236102b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:11, skipping insertion in model container [2022-11-23 14:14:11,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:14:11" (1/1) ... [2022-11-23 14:14:11,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:14:11,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:14:11,623 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/sv-benchmarks/c/eca-rers2012/Problem02_label06.c[21333,21346] [2022-11-23 14:14:11,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:14:11,649 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:14:11,724 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/sv-benchmarks/c/eca-rers2012/Problem02_label06.c[21333,21346] [2022-11-23 14:14:11,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:14:11,743 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:14:11,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:11 WrapperNode [2022-11-23 14:14:11,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:14:11,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:14:11,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:14:11,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:14:11,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:11" (1/1) ... [2022-11-23 14:14:11,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:11" (1/1) ... [2022-11-23 14:14:11,852 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 668 [2022-11-23 14:14:11,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:14:11,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:14:11,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:14:11,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:14:11,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:11" (1/1) ... [2022-11-23 14:14:11,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:11" (1/1) ... [2022-11-23 14:14:11,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:11" (1/1) ... [2022-11-23 14:14:11,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:11" (1/1) ... [2022-11-23 14:14:11,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:11" (1/1) ... [2022-11-23 14:14:11,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:11" (1/1) ... [2022-11-23 14:14:11,919 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:11" (1/1) ... [2022-11-23 14:14:11,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:11" (1/1) ... [2022-11-23 14:14:11,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:14:11,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:14:11,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:14:11,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:14:11,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:11" (1/1) ... [2022-11-23 14:14:11,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:14:11,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:14:11,966 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:14:12,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:14:12,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:14:12,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:14:12,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:14:12,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:14:12,126 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:14:12,128 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:14:13,244 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:14:13,482 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:14:13,482 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 14:14:13,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:14:13 BoogieIcfgContainer [2022-11-23 14:14:13,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:14:13,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:14:13,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:14:13,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:14:13,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:14:11" (1/3) ... [2022-11-23 14:14:13,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba36501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:14:13, skipping insertion in model container [2022-11-23 14:14:13,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:11" (2/3) ... [2022-11-23 14:14:13,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba36501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:14:13, skipping insertion in model container [2022-11-23 14:14:13,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:14:13" (3/3) ... [2022-11-23 14:14:13,494 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label06.c [2022-11-23 14:14:13,512 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:14:13,512 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:14:13,561 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:14:13,567 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6e60970a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:14:13,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:14:13,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:13,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 14:14:13,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:13,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:13,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:13,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:13,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1814586647, now seen corresponding path program 1 times [2022-11-23 14:14:13,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:13,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876825946] [2022-11-23 14:14:13,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:13,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:14,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:14:14,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:14,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876825946] [2022-11-23 14:14:14,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876825946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:14,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:14:14,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:14:14,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954384147] [2022-11-23 14:14:14,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:14,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:14:14,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:14,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:14:14,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:14,215 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:14,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:14,792 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2022-11-23 14:14:14,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:14:14,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-23 14:14:14,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:14,804 INFO L225 Difference]: With dead ends: 251 [2022-11-23 14:14:14,804 INFO L226 Difference]: Without dead ends: 163 [2022-11-23 14:14:14,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:14,811 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:14,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 65 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:14:14,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-23 14:14:14,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-11-23 14:14:14,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5617283950617284) internal successors, (253), 162 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:14,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2022-11-23 14:14:14,859 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 80 [2022-11-23 14:14:14,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:14,860 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2022-11-23 14:14:14,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:14,861 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2022-11-23 14:14:14,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-23 14:14:14,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:14,864 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:14,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:14:14,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:14,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:14,865 INFO L85 PathProgramCache]: Analyzing trace with hash -483694278, now seen corresponding path program 1 times [2022-11-23 14:14:14,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:14,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878574166] [2022-11-23 14:14:14,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:14,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:14:15,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:15,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878574166] [2022-11-23 14:14:15,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878574166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:15,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:14:15,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:14:15,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066347958] [2022-11-23 14:14:15,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:15,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:14:15,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:15,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:14:15,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:14:15,407 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:16,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:16,556 INFO L93 Difference]: Finished difference Result 725 states and 1163 transitions. [2022-11-23 14:14:16,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:14:16,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-11-23 14:14:16,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:16,560 INFO L225 Difference]: With dead ends: 725 [2022-11-23 14:14:16,560 INFO L226 Difference]: Without dead ends: 563 [2022-11-23 14:14:16,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:14:16,563 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 389 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:16,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 23 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 14:14:16,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-11-23 14:14:16,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2022-11-23 14:14:16,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.4481327800829875) internal successors, (698), 482 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:16,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 698 transitions. [2022-11-23 14:14:16,627 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 698 transitions. Word has length 85 [2022-11-23 14:14:16,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:16,628 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 698 transitions. [2022-11-23 14:14:16,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:16,629 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 698 transitions. [2022-11-23 14:14:16,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-23 14:14:16,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:16,637 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:16,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:14:16,637 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:16,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:16,639 INFO L85 PathProgramCache]: Analyzing trace with hash -329011223, now seen corresponding path program 1 times [2022-11-23 14:14:16,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:16,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009414726] [2022-11-23 14:14:16,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:16,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:16,805 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:14:16,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:16,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009414726] [2022-11-23 14:14:16,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009414726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:16,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:14:16,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:14:16,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237777079] [2022-11-23 14:14:16,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:16,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:14:16,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:16,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:14:16,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:16,812 INFO L87 Difference]: Start difference. First operand 483 states and 698 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:17,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:17,194 INFO L93 Difference]: Finished difference Result 1445 states and 2091 transitions. [2022-11-23 14:14:17,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:14:17,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-11-23 14:14:17,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:17,198 INFO L225 Difference]: With dead ends: 1445 [2022-11-23 14:14:17,198 INFO L226 Difference]: Without dead ends: 963 [2022-11-23 14:14:17,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:17,206 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 113 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:17,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 20 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:14:17,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-11-23 14:14:17,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 883. [2022-11-23 14:14:17,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.3639455782312926) internal successors, (1203), 882 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:17,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1203 transitions. [2022-11-23 14:14:17,266 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1203 transitions. Word has length 91 [2022-11-23 14:14:17,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:17,271 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1203 transitions. [2022-11-23 14:14:17,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:17,272 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1203 transitions. [2022-11-23 14:14:17,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-23 14:14:17,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:17,285 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:17,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:14:17,285 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:17,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:17,286 INFO L85 PathProgramCache]: Analyzing trace with hash -985379421, now seen corresponding path program 1 times [2022-11-23 14:14:17,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:17,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247608940] [2022-11-23 14:14:17,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:17,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:17,730 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:14:17,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:17,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247608940] [2022-11-23 14:14:17,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247608940] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:14:17,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721492714] [2022-11-23 14:14:17,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:17,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:14:17,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:14:17,739 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:14:17,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:14:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:17,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:14:17,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:14:18,059 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 14:14:18,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:14:18,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721492714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:18,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:14:18,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-23 14:14:18,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448692547] [2022-11-23 14:14:18,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:18,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:14:18,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:18,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:14:18,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:14:18,062 INFO L87 Difference]: Start difference. First operand 883 states and 1203 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:18,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:18,460 INFO L93 Difference]: Finished difference Result 2165 states and 3041 transitions. [2022-11-23 14:14:18,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:14:18,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 107 [2022-11-23 14:14:18,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:18,467 INFO L225 Difference]: With dead ends: 2165 [2022-11-23 14:14:18,467 INFO L226 Difference]: Without dead ends: 1283 [2022-11-23 14:14:18,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:14:18,478 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:18,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 152 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:14:18,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-11-23 14:14:18,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1203. [2022-11-23 14:14:18,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.316971713810316) internal successors, (1583), 1202 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:18,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1583 transitions. [2022-11-23 14:14:18,529 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1583 transitions. Word has length 107 [2022-11-23 14:14:18,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:18,533 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1583 transitions. [2022-11-23 14:14:18,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:18,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1583 transitions. [2022-11-23 14:14:18,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-23 14:14:18,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:18,537 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:18,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 14:14:18,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:14:18,744 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:18,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:18,744 INFO L85 PathProgramCache]: Analyzing trace with hash 793810871, now seen corresponding path program 1 times [2022-11-23 14:14:18,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:18,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093171542] [2022-11-23 14:14:18,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:18,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:18,889 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:14:18,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:18,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093171542] [2022-11-23 14:14:18,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093171542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:18,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:14:18,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:14:18,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037423607] [2022-11-23 14:14:18,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:18,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:14:18,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:18,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:14:18,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:18,892 INFO L87 Difference]: Start difference. First operand 1203 states and 1583 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:19,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:19,241 INFO L93 Difference]: Finished difference Result 2885 states and 3921 transitions. [2022-11-23 14:14:19,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:14:19,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 [2022-11-23 14:14:19,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:19,247 INFO L225 Difference]: With dead ends: 2885 [2022-11-23 14:14:19,247 INFO L226 Difference]: Without dead ends: 1683 [2022-11-23 14:14:19,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:19,249 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 66 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:19,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 144 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:14:19,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2022-11-23 14:14:19,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1523. [2022-11-23 14:14:19,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.3226018396846255) internal successors, (2013), 1522 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:19,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2013 transitions. [2022-11-23 14:14:19,324 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2013 transitions. Word has length 115 [2022-11-23 14:14:19,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:19,324 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 2013 transitions. [2022-11-23 14:14:19,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:19,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2013 transitions. [2022-11-23 14:14:19,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-23 14:14:19,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:19,328 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:19,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:14:19,328 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:19,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:19,329 INFO L85 PathProgramCache]: Analyzing trace with hash -387655936, now seen corresponding path program 1 times [2022-11-23 14:14:19,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:19,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004956497] [2022-11-23 14:14:19,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:19,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 14:14:19,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:19,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004956497] [2022-11-23 14:14:19,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004956497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:19,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:14:19,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:14:19,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951766279] [2022-11-23 14:14:19,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:19,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:14:19,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:19,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:14:19,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:19,458 INFO L87 Difference]: Start difference. First operand 1523 states and 2013 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:19,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:19,835 INFO L93 Difference]: Finished difference Result 3445 states and 4660 transitions. [2022-11-23 14:14:19,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:14:19,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2022-11-23 14:14:19,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:19,843 INFO L225 Difference]: With dead ends: 3445 [2022-11-23 14:14:19,843 INFO L226 Difference]: Without dead ends: 1843 [2022-11-23 14:14:19,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:19,847 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 55 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:19,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 28 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:14:19,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2022-11-23 14:14:19,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1763. [2022-11-23 14:14:19,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 1.3314415437003406) internal successors, (2346), 1762 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:19,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2346 transitions. [2022-11-23 14:14:19,891 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2346 transitions. Word has length 153 [2022-11-23 14:14:19,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:19,891 INFO L495 AbstractCegarLoop]: Abstraction has 1763 states and 2346 transitions. [2022-11-23 14:14:19,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:19,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2346 transitions. [2022-11-23 14:14:19,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-23 14:14:19,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:19,897 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:19,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:14:19,897 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:19,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:19,898 INFO L85 PathProgramCache]: Analyzing trace with hash -126925409, now seen corresponding path program 1 times [2022-11-23 14:14:19,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:19,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470928008] [2022-11-23 14:14:19,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:19,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:20,117 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 14:14:20,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:20,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470928008] [2022-11-23 14:14:20,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470928008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:20,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:14:20,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:14:20,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835749287] [2022-11-23 14:14:20,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:20,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:14:20,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:20,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:14:20,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:20,120 INFO L87 Difference]: Start difference. First operand 1763 states and 2346 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:20,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:20,503 INFO L93 Difference]: Finished difference Result 4085 states and 5428 transitions. [2022-11-23 14:14:20,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:14:20,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 171 [2022-11-23 14:14:20,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:20,510 INFO L225 Difference]: With dead ends: 4085 [2022-11-23 14:14:20,511 INFO L226 Difference]: Without dead ends: 1763 [2022-11-23 14:14:20,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:20,515 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 19 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:20,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 150 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:14:20,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2022-11-23 14:14:20,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1763. [2022-11-23 14:14:20,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 1.2616345062429057) internal successors, (2223), 1762 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:20,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2223 transitions. [2022-11-23 14:14:20,572 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2223 transitions. Word has length 171 [2022-11-23 14:14:20,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:20,573 INFO L495 AbstractCegarLoop]: Abstraction has 1763 states and 2223 transitions. [2022-11-23 14:14:20,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:20,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2223 transitions. [2022-11-23 14:14:20,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-23 14:14:20,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:20,579 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:20,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:14:20,579 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:20,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:20,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1027400499, now seen corresponding path program 1 times [2022-11-23 14:14:20,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:20,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449206776] [2022-11-23 14:14:20,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:20,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:20,826 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-23 14:14:20,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:20,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449206776] [2022-11-23 14:14:20,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449206776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:20,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:14:20,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:14:20,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238197537] [2022-11-23 14:14:20,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:20,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:14:20,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:20,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:14:20,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:20,830 INFO L87 Difference]: Start difference. First operand 1763 states and 2223 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:21,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:21,201 INFO L93 Difference]: Finished difference Result 4085 states and 5166 transitions. [2022-11-23 14:14:21,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:14:21,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2022-11-23 14:14:21,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:21,212 INFO L225 Difference]: With dead ends: 4085 [2022-11-23 14:14:21,213 INFO L226 Difference]: Without dead ends: 2243 [2022-11-23 14:14:21,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:21,217 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 78 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:21,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 137 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:14:21,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2022-11-23 14:14:21,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 2243. [2022-11-23 14:14:21,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2243 states, 2242 states have (on average 1.2181088314005353) internal successors, (2731), 2242 states have internal predecessors, (2731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:21,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 2731 transitions. [2022-11-23 14:14:21,269 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 2731 transitions. Word has length 172 [2022-11-23 14:14:21,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:21,270 INFO L495 AbstractCegarLoop]: Abstraction has 2243 states and 2731 transitions. [2022-11-23 14:14:21,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:21,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 2731 transitions. [2022-11-23 14:14:21,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-23 14:14:21,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:21,275 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:21,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:14:21,276 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:21,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:21,276 INFO L85 PathProgramCache]: Analyzing trace with hash -18637207, now seen corresponding path program 1 times [2022-11-23 14:14:21,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:21,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011714567] [2022-11-23 14:14:21,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:21,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:21,623 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 52 proven. 7 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-23 14:14:21,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:21,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011714567] [2022-11-23 14:14:21,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011714567] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:14:21,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736677698] [2022-11-23 14:14:21,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:21,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:14:21,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:14:21,626 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:14:21,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:14:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:21,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:14:21,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:14:21,879 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-23 14:14:21,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:14:21,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736677698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:21,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:14:21,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-23 14:14:21,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086391434] [2022-11-23 14:14:21,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:21,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:14:21,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:21,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:14:21,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:14:21,882 INFO L87 Difference]: Start difference. First operand 2243 states and 2731 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:22,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:22,097 INFO L93 Difference]: Finished difference Result 4245 states and 5134 transitions. [2022-11-23 14:14:22,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:14:22,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 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 180 [2022-11-23 14:14:22,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:22,104 INFO L225 Difference]: With dead ends: 4245 [2022-11-23 14:14:22,104 INFO L226 Difference]: Without dead ends: 1923 [2022-11-23 14:14:22,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:14:22,107 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 113 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:22,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 4 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:14:22,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2022-11-23 14:14:22,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1363. [2022-11-23 14:14:22,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1362 states have (on average 1.1732745961820852) internal successors, (1598), 1362 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:22,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1598 transitions. [2022-11-23 14:14:22,147 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1598 transitions. Word has length 180 [2022-11-23 14:14:22,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:22,148 INFO L495 AbstractCegarLoop]: Abstraction has 1363 states and 1598 transitions. [2022-11-23 14:14:22,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:22,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1598 transitions. [2022-11-23 14:14:22,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-23 14:14:22,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:22,152 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:22,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:14:22,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:14:22,358 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:22,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:22,359 INFO L85 PathProgramCache]: Analyzing trace with hash -687024265, now seen corresponding path program 1 times [2022-11-23 14:14:22,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:22,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913733488] [2022-11-23 14:14:22,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:22,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:22,616 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 96 proven. 8 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-23 14:14:22,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:22,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913733488] [2022-11-23 14:14:22,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913733488] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:14:22,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054823275] [2022-11-23 14:14:22,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:22,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:14:22,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:14:22,622 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:14:22,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:14:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:22,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:14:22,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:14:22,836 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-23 14:14:22,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:14:22,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054823275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:22,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:14:22,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-23 14:14:22,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089464965] [2022-11-23 14:14:22,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:22,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:14:22,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:22,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:14:22,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:14:22,839 INFO L87 Difference]: Start difference. First operand 1363 states and 1598 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:23,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:23,118 INFO L93 Difference]: Finished difference Result 2325 states and 2727 transitions. [2022-11-23 14:14:23,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:14:23,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2022-11-23 14:14:23,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:23,123 INFO L225 Difference]: With dead ends: 2325 [2022-11-23 14:14:23,123 INFO L226 Difference]: Without dead ends: 1283 [2022-11-23 14:14:23,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:14:23,127 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 63 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:23,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 45 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:14:23,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-11-23 14:14:23,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1203. [2022-11-23 14:14:23,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.139767054908486) internal successors, (1370), 1202 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:23,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1370 transitions. [2022-11-23 14:14:23,157 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1370 transitions. Word has length 189 [2022-11-23 14:14:23,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:23,158 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1370 transitions. [2022-11-23 14:14:23,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:23,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1370 transitions. [2022-11-23 14:14:23,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-23 14:14:23,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:23,162 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:23,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:14:23,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:14:23,367 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:23,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:23,368 INFO L85 PathProgramCache]: Analyzing trace with hash -659089124, now seen corresponding path program 1 times [2022-11-23 14:14:23,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:23,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597509755] [2022-11-23 14:14:23,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:23,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:23,531 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-23 14:14:23,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:23,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597509755] [2022-11-23 14:14:23,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597509755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:23,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:14:23,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:14:23,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850070640] [2022-11-23 14:14:23,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:23,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:14:23,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:23,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:14:23,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:23,533 INFO L87 Difference]: Start difference. First operand 1203 states and 1370 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:23,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:23,839 INFO L93 Difference]: Finished difference Result 2085 states and 2384 transitions. [2022-11-23 14:14:23,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:14:23,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2022-11-23 14:14:23,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:23,844 INFO L225 Difference]: With dead ends: 2085 [2022-11-23 14:14:23,844 INFO L226 Difference]: Without dead ends: 1123 [2022-11-23 14:14:23,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:23,846 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 74 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:23,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 11 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:14:23,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2022-11-23 14:14:23,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2022-11-23 14:14:23,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.1354723707664884) internal successors, (1274), 1122 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:23,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1274 transitions. [2022-11-23 14:14:23,872 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1274 transitions. Word has length 196 [2022-11-23 14:14:23,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:23,872 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1274 transitions. [2022-11-23 14:14:23,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:23,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1274 transitions. [2022-11-23 14:14:23,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-23 14:14:23,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:23,879 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:23,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 14:14:23,879 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:23,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:23,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1335204306, now seen corresponding path program 1 times [2022-11-23 14:14:23,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:23,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461744533] [2022-11-23 14:14:23,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:23,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:24,035 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-23 14:14:24,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:24,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461744533] [2022-11-23 14:14:24,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461744533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:24,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:14:24,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:14:24,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565383961] [2022-11-23 14:14:24,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:24,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:14:24,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:24,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:14:24,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:24,037 INFO L87 Difference]: Start difference. First operand 1123 states and 1274 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:24,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:24,329 INFO L93 Difference]: Finished difference Result 2405 states and 2763 transitions. [2022-11-23 14:14:24,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:14:24,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 206 [2022-11-23 14:14:24,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:24,333 INFO L225 Difference]: With dead ends: 2405 [2022-11-23 14:14:24,334 INFO L226 Difference]: Without dead ends: 1363 [2022-11-23 14:14:24,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:24,335 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 64 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:24,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 100 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:14:24,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2022-11-23 14:14:24,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1203. [2022-11-23 14:14:24,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.1339434276206324) internal successors, (1363), 1202 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:24,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1363 transitions. [2022-11-23 14:14:24,369 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1363 transitions. Word has length 206 [2022-11-23 14:14:24,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:24,369 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1363 transitions. [2022-11-23 14:14:24,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:24,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1363 transitions. [2022-11-23 14:14:24,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-11-23 14:14:24,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:24,374 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:24,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 14:14:24,374 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:24,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:24,375 INFO L85 PathProgramCache]: Analyzing trace with hash 626265463, now seen corresponding path program 1 times [2022-11-23 14:14:24,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:24,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630844929] [2022-11-23 14:14:24,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:24,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 263 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:14:24,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:24,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630844929] [2022-11-23 14:14:24,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630844929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:24,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:14:24,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:14:24,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865619809] [2022-11-23 14:14:24,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:24,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:14:24,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:24,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:14:24,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:14:24,788 INFO L87 Difference]: Start difference. First operand 1203 states and 1363 transitions. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:25,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:25,264 INFO L93 Difference]: Finished difference Result 2245 states and 2555 transitions. [2022-11-23 14:14:25,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:14:25,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 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 229 [2022-11-23 14:14:25,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:25,268 INFO L225 Difference]: With dead ends: 2245 [2022-11-23 14:14:25,268 INFO L226 Difference]: Without dead ends: 1203 [2022-11-23 14:14:25,269 INFO L412 NwaCegarLoop]: 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 [2022-11-23 14:14:25,270 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 74 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:25,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 143 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:14:25,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-11-23 14:14:25,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2022-11-23 14:14:25,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.1306156405990018) internal successors, (1359), 1202 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:25,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1359 transitions. [2022-11-23 14:14:25,299 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1359 transitions. Word has length 229 [2022-11-23 14:14:25,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:25,299 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1359 transitions. [2022-11-23 14:14:25,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:25,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1359 transitions. [2022-11-23 14:14:25,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-11-23 14:14:25,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:25,304 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:25,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 14:14:25,304 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:25,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:25,305 INFO L85 PathProgramCache]: Analyzing trace with hash 559970142, now seen corresponding path program 1 times [2022-11-23 14:14:25,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:25,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721438684] [2022-11-23 14:14:25,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:25,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:25,481 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-23 14:14:25,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:25,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721438684] [2022-11-23 14:14:25,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721438684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:25,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:14:25,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:14:25,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680046175] [2022-11-23 14:14:25,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:25,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:14:25,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:25,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:14:25,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:25,483 INFO L87 Difference]: Start difference. First operand 1203 states and 1359 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:25,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:25,757 INFO L93 Difference]: Finished difference Result 2405 states and 2730 transitions. [2022-11-23 14:14:25,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:14:25,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 245 [2022-11-23 14:14:25,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:25,761 INFO L225 Difference]: With dead ends: 2405 [2022-11-23 14:14:25,761 INFO L226 Difference]: Without dead ends: 1043 [2022-11-23 14:14:25,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:25,763 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:25,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 113 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:14:25,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-11-23 14:14:25,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2022-11-23 14:14:25,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1042 states have (on average 1.0700575815738964) internal successors, (1115), 1042 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:25,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1115 transitions. [2022-11-23 14:14:25,793 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1115 transitions. Word has length 245 [2022-11-23 14:14:25,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:25,793 INFO L495 AbstractCegarLoop]: Abstraction has 1043 states and 1115 transitions. [2022-11-23 14:14:25,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:14:25,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1115 transitions. [2022-11-23 14:14:25,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-11-23 14:14:25,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:25,798 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:25,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 14:14:25,799 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:25,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:25,799 INFO L85 PathProgramCache]: Analyzing trace with hash 34401679, now seen corresponding path program 1 times [2022-11-23 14:14:25,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:25,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023983660] [2022-11-23 14:14:25,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:25,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:26,443 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 337 proven. 15 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-23 14:14:26,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:26,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023983660] [2022-11-23 14:14:26,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023983660] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:14:26,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150485969] [2022-11-23 14:14:26,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:26,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:14:26,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:14:26,446 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:14:26,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:14:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:26,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 14:14:26,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:14:28,397 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 383 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:14:28,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:14:30,594 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 259 proven. 64 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-23 14:14:30,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150485969] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:14:30,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [161248892] [2022-11-23 14:14:30,631 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2022-11-23 14:14:30,632 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:14:30,635 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:14:30,641 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:14:30,641 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:15:40,963 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 61 [2022-11-23 14:15:41,349 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 14036 conjuctions. This might take some time... [2022-11-23 14:15:41,584 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 80 conjuctions. [2022-11-23 14:15:41,587 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 61 [2022-11-23 14:15:41,820 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 14036 conjuctions. This might take some time... [2022-11-23 14:15:42,005 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 80 conjuctions. [2022-11-23 14:15:42,051 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 61 [2022-11-23 14:15:42,265 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 14036 conjuctions. This might take some time... [2022-11-23 14:15:42,459 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 80 conjuctions. [2022-11-23 14:15:42,700 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:15:58,157 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '56501#(and (<= 26 ~z~0) (<= 5 ~e~0) (<= 25 ~y~0) (<= ~c~0 3) (<= ~e~0 5) (<= 6 ~f~0) (<= 0 |#NULL.base|) (<= ~w~0 23) (<= ~u~0 21) (<= 1 |ULTIMATE.start_calculate_output_~input#1|) (<= ~x~0 24) (<= 3 ~c~0) (<= |#NULL.offset| 0) (<= ~v~0 22) (<= 1 |ULTIMATE.start_main_~input~0#1|) (= ~a11~0 1) (<= ~a~0 1) (<= 4 ~d~0) (<= 23 ~w~0) (= ~a28~0 10) (<= ~z~0 26) (= ~a21~0 1) (<= 21 ~u~0) (<= 1 |ULTIMATE.start_calculate_output_#in~input#1|) (= 7 ~a17~0) (<= |#NULL.base| 0) (<= ~y~0 25) (= ~a19~0 1) (<= 1 ~a~0) (<= 22 ~v~0) (<= 0 |#NULL.offset|) (<= ~d~0 4) (<= 0 |#StackHeapBarrier|) (<= ~a25~0 0) (<= ~f~0 6) (<= 0 ~a25~0) (<= 24 ~x~0))' at error location [2022-11-23 14:15:58,157 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:15:58,157 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:15:58,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 6] total 12 [2022-11-23 14:15:58,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240500575] [2022-11-23 14:15:58,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:15:58,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:15:58,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:15:58,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:15:58,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-23 14:15:58,160 INFO L87 Difference]: Start difference. First operand 1043 states and 1115 transitions. Second operand has 12 states, 12 states have (on average 48.166666666666664) internal successors, (578), 12 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:15:59,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:15:59,566 INFO L93 Difference]: Finished difference Result 1686 states and 1791 transitions. [2022-11-23 14:15:59,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 14:15:59,567 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 48.166666666666664) internal successors, (578), 12 states have internal predecessors, (578), 0 states have call successors, (0), 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 279 [2022-11-23 14:15:59,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:15:59,567 INFO L225 Difference]: With dead ends: 1686 [2022-11-23 14:15:59,568 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 14:15:59,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 853 GetRequests, 598 SyntacticMatches, 227 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3659 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2022-11-23 14:15:59,570 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 708 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:15:59,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 55 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 14:15:59,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 14:15:59,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 14:15:59,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:15:59,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 14:15:59,571 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 279 [2022-11-23 14:15:59,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:15:59,571 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 14:15:59,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 48.166666666666664) internal successors, (578), 12 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:15:59,572 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 14:15:59,572 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 14:15:59,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 14:15:59,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:15:59,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 14:15:59,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 14:16:00,910 INFO L899 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2022-11-23 14:16:00,910 INFO L899 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2022-11-23 14:16:00,910 INFO L899 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2022-11-23 14:16:00,911 INFO L899 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2022-11-23 14:16:00,911 INFO L899 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2022-11-23 14:16:00,911 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2022-11-23 14:16:00,911 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2022-11-23 14:16:00,911 INFO L899 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2022-11-23 14:16:00,911 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2022-11-23 14:16:00,911 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2022-11-23 14:16:00,911 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2022-11-23 14:16:00,911 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2022-11-23 14:16:00,911 INFO L899 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2022-11-23 14:16:00,911 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2022-11-23 14:16:00,912 INFO L899 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2022-11-23 14:16:00,912 INFO L899 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2022-11-23 14:16:00,912 INFO L899 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2022-11-23 14:16:00,912 INFO L899 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2022-11-23 14:16:00,912 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2022-11-23 14:16:00,912 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2022-11-23 14:16:00,912 INFO L899 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2022-11-23 14:16:00,913 INFO L899 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2022-11-23 14:16:00,913 INFO L899 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2022-11-23 14:16:00,913 INFO L899 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2022-11-23 14:16:00,913 INFO L899 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2022-11-23 14:16:00,913 INFO L899 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2022-11-23 14:16:00,913 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 14:16:00,913 INFO L899 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2022-11-23 14:16:00,914 INFO L899 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2022-11-23 14:16:00,914 INFO L899 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2022-11-23 14:16:00,914 INFO L899 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2022-11-23 14:16:00,914 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2022-11-23 14:16:00,914 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2022-11-23 14:16:00,914 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2022-11-23 14:16:00,914 INFO L899 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2022-11-23 14:16:00,915 INFO L899 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2022-11-23 14:16:00,915 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 602) no Hoare annotation was computed. [2022-11-23 14:16:00,915 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2022-11-23 14:16:00,915 INFO L899 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2022-11-23 14:16:00,915 INFO L899 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2022-11-23 14:16:00,915 INFO L899 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2022-11-23 14:16:00,915 INFO L899 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2022-11-23 14:16:00,916 INFO L899 garLoopResultBuilder]: For program point L598-1(lines 39 608) no Hoare annotation was computed. [2022-11-23 14:16:00,916 INFO L899 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2022-11-23 14:16:00,916 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2022-11-23 14:16:00,916 INFO L899 garLoopResultBuilder]: For program point L601-1(lines 39 608) no Hoare annotation was computed. [2022-11-23 14:16:00,916 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2022-11-23 14:16:00,916 INFO L899 garLoopResultBuilder]: For program point L602(line 602) no Hoare annotation was computed. [2022-11-23 14:16:00,916 INFO L899 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2022-11-23 14:16:00,917 INFO L899 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2022-11-23 14:16:00,917 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2022-11-23 14:16:00,917 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2022-11-23 14:16:00,917 INFO L899 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2022-11-23 14:16:00,917 INFO L899 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2022-11-23 14:16:00,917 INFO L899 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2022-11-23 14:16:00,917 INFO L899 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2022-11-23 14:16:00,918 INFO L895 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse2 (= ~a11~0 0)) (.cse4 (<= ~a17~0 8)) (.cse1 (= ~a19~0 1))) (let ((.cse12 (or (and (not (= 7 ~a17~0)) .cse4 .cse1) (and .cse2 .cse4 .cse1))) (.cse6 (<= ~a25~0 0)) (.cse0 (<= ~a17~0 7)) (.cse9 (<= 10 ~a28~0)) (.cse13 (= ~a17~0 8)) (.cse3 (= ~a21~0 1)) (.cse14 (not (= ~a11~0 1))) (.cse7 (<= ~a19~0 0)) (.cse10 (<= 9 ~a28~0)) (.cse11 (<= ~a28~0 10)) (.cse8 (= ~a25~0 1)) (.cse5 (<= ~a28~0 7))) (or (and (<= 11 ~a28~0) .cse0 .cse1) (and .cse0 .cse2 .cse1) (and .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse8 .cse0) (and .cse9 .cse10 .cse11 .cse12 .cse6) (and .cse13 .cse10 .cse3 .cse11 .cse12 .cse6) (and .cse8 .cse4 .cse1 .cse5) (and .cse0 .cse7) (and .cse8 .cse3 .cse4 .cse1 .cse14) (and .cse13 (= ~a25~0 ~a11~0) .cse3 .cse2 .cse1 .cse5) (and .cse9 .cse13 .cse8 .cse3 .cse11 .cse14 .cse7) (and .cse3 .cse4 (= ~a28~0 8) .cse14 (= ~a25~0 0) .cse7) (and .cse10 .cse8 .cse4 .cse11 .cse1) (and .cse8 .cse2 .cse1 .cse5)))) [2022-11-23 14:16:00,918 INFO L899 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2022-11-23 14:16:00,919 INFO L899 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2022-11-23 14:16:00,919 INFO L902 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2022-11-23 14:16:00,919 INFO L899 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2022-11-23 14:16:00,919 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2022-11-23 14:16:00,919 INFO L899 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2022-11-23 14:16:00,919 INFO L899 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2022-11-23 14:16:00,919 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2022-11-23 14:16:00,920 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 14:16:00,920 INFO L899 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2022-11-23 14:16:00,920 INFO L899 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2022-11-23 14:16:00,920 INFO L895 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse2 (= ~a11~0 0)) (.cse4 (<= ~a17~0 8)) (.cse1 (= ~a19~0 1))) (let ((.cse12 (or (and (not (= 7 ~a17~0)) .cse4 .cse1) (and .cse2 .cse4 .cse1))) (.cse6 (<= ~a25~0 0)) (.cse0 (<= ~a17~0 7)) (.cse9 (<= 10 ~a28~0)) (.cse13 (= ~a17~0 8)) (.cse3 (= ~a21~0 1)) (.cse14 (not (= ~a11~0 1))) (.cse7 (<= ~a19~0 0)) (.cse10 (<= 9 ~a28~0)) (.cse11 (<= ~a28~0 10)) (.cse8 (= ~a25~0 1)) (.cse5 (<= ~a28~0 7))) (or (and (<= 11 ~a28~0) .cse0 .cse1) (and .cse0 .cse2 .cse1) (and .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse8 .cse0) (and .cse9 .cse10 .cse11 .cse12 .cse6) (and .cse13 .cse10 .cse3 .cse11 .cse12 .cse6) (and .cse8 .cse4 .cse1 .cse5) (and .cse0 .cse7) (and .cse8 .cse3 .cse4 .cse1 .cse14) (and .cse13 (= ~a25~0 ~a11~0) .cse3 .cse2 .cse1 .cse5) (and .cse9 .cse13 .cse8 .cse3 .cse11 .cse14 .cse7) (and .cse3 .cse4 (= ~a28~0 8) .cse14 (= ~a25~0 0) .cse7) (and .cse10 .cse8 .cse4 .cse11 .cse1) (and .cse8 .cse2 .cse1 .cse5)))) [2022-11-23 14:16:00,920 INFO L899 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2022-11-23 14:16:00,921 INFO L899 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2022-11-23 14:16:00,921 INFO L899 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2022-11-23 14:16:00,921 INFO L899 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2022-11-23 14:16:00,921 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2022-11-23 14:16:00,921 INFO L899 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2022-11-23 14:16:00,921 INFO L899 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2022-11-23 14:16:00,921 INFO L899 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2022-11-23 14:16:00,922 INFO L899 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2022-11-23 14:16:00,922 INFO L899 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2022-11-23 14:16:00,922 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2022-11-23 14:16:00,922 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2022-11-23 14:16:00,922 INFO L899 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2022-11-23 14:16:00,922 INFO L899 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2022-11-23 14:16:00,922 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2022-11-23 14:16:00,923 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2022-11-23 14:16:00,926 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:16:00,928 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:16:00,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:16:00 BoogieIcfgContainer [2022-11-23 14:16:00,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:16:00,967 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:16:00,967 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:16:00,968 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:16:00,968 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:14:13" (3/4) ... [2022-11-23 14:16:00,971 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 14:16:00,998 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 115 nodes and edges [2022-11-23 14:16:01,003 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-11-23 14:16:01,005 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-23 14:16:01,006 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 14:16:01,127 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 14:16:01,127 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:16:01,128 INFO L158 Benchmark]: Toolchain (without parser) took 109936.01ms. Allocated memory was 153.1MB in the beginning and 780.1MB in the end (delta: 627.0MB). Free memory was 108.2MB in the beginning and 300.3MB in the end (delta: -192.2MB). Peak memory consumption was 437.2MB. Max. memory is 16.1GB. [2022-11-23 14:16:01,128 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 153.1MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:16:01,129 INFO L158 Benchmark]: CACSL2BoogieTranslator took 551.12ms. Allocated memory is still 153.1MB. Free memory was 107.9MB in the beginning and 81.7MB in the end (delta: 26.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-23 14:16:01,130 INFO L158 Benchmark]: Boogie Procedure Inliner took 107.81ms. Allocated memory was 153.1MB in the beginning and 232.8MB in the end (delta: 79.7MB). Free memory was 81.7MB in the beginning and 199.9MB in the end (delta: -118.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 14:16:01,130 INFO L158 Benchmark]: Boogie Preprocessor took 75.39ms. Allocated memory is still 232.8MB. Free memory was 199.9MB in the beginning and 197.4MB in the end (delta: 2.5MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2022-11-23 14:16:01,130 INFO L158 Benchmark]: RCFGBuilder took 1555.83ms. Allocated memory is still 232.8MB. Free memory was 197.4MB in the beginning and 143.5MB in the end (delta: 53.9MB). Peak memory consumption was 77.6MB. Max. memory is 16.1GB. [2022-11-23 14:16:01,131 INFO L158 Benchmark]: TraceAbstraction took 107479.26ms. Allocated memory was 232.8MB in the beginning and 780.1MB in the end (delta: 547.4MB). Free memory was 142.4MB in the beginning and 311.1MB in the end (delta: -168.6MB). Peak memory consumption was 379.8MB. Max. memory is 16.1GB. [2022-11-23 14:16:01,135 INFO L158 Benchmark]: Witness Printer took 159.96ms. Allocated memory is still 780.1MB. Free memory was 311.1MB in the beginning and 300.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 14:16:01,137 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 153.1MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 551.12ms. Allocated memory is still 153.1MB. Free memory was 107.9MB in the beginning and 81.7MB in the end (delta: 26.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 107.81ms. Allocated memory was 153.1MB in the beginning and 232.8MB in the end (delta: 79.7MB). Free memory was 81.7MB in the beginning and 199.9MB in the end (delta: -118.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.39ms. Allocated memory is still 232.8MB. Free memory was 199.9MB in the beginning and 197.4MB in the end (delta: 2.5MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * RCFGBuilder took 1555.83ms. Allocated memory is still 232.8MB. Free memory was 197.4MB in the beginning and 143.5MB in the end (delta: 53.9MB). Peak memory consumption was 77.6MB. Max. memory is 16.1GB. * TraceAbstraction took 107479.26ms. Allocated memory was 232.8MB in the beginning and 780.1MB in the end (delta: 547.4MB). Free memory was 142.4MB in the beginning and 311.1MB in the end (delta: -168.6MB). Peak memory consumption was 379.8MB. Max. memory is 16.1GB. * Witness Printer took 159.96ms. Allocated memory is still 780.1MB. Free memory was 311.1MB in the beginning and 300.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 602]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 107.4s, OverallIterations: 15, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1849 SdHoareTripleChecker+Valid, 6.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1849 mSDsluCounter, 1190 SdHoareTripleChecker+Invalid, 5.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 138 mSDsCounter, 917 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5325 IncrementalHoareTripleChecker+Invalid, 6242 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 917 mSolverCounterUnsat, 1052 mSDtfsCounter, 5325 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1372 GetRequests, 1090 SyntacticMatches, 227 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3664 ImplicationChecksByTransitivity, 15.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2243occurred in iteration=8, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 15 MinimizatonAttempts, 1280 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 53 NumberOfFragments, 491 HoareAnnotationTreeSize, 3 FomulaSimplifications, 516 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 1508 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 3253 NumberOfCodeBlocks, 3253 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 3512 ConstructedInterpolants, 0 QuantifiedInterpolants, 13273 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1681 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 20 InterpolantComputations, 14 PerfectInterpolantSequences, 3165/3290 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((((((((((11 <= a28 && a17 <= 7) && a19 == 1) || ((a17 <= 7 && a11 == 0) && a19 == 1)) || ((((a21 == 1 && a17 <= 8) && a28 <= 7) && a25 <= 0) && a19 <= 0)) || (a25 == 1 && a17 <= 7)) || ((((10 <= a28 && 9 <= a28) && a28 <= 10) && (((!(7 == a17) && a17 <= 8) && a19 == 1) || ((a11 == 0 && a17 <= 8) && a19 == 1))) && a25 <= 0)) || (((((a17 == 8 && 9 <= a28) && a21 == 1) && a28 <= 10) && (((!(7 == a17) && a17 <= 8) && a19 == 1) || ((a11 == 0 && a17 <= 8) && a19 == 1))) && a25 <= 0)) || (((a25 == 1 && a17 <= 8) && a19 == 1) && a28 <= 7)) || (a17 <= 7 && a19 <= 0)) || ((((a25 == 1 && a21 == 1) && a17 <= 8) && a19 == 1) && !(a11 == 1))) || (((((a17 == 8 && a25 == a11) && a21 == 1) && a11 == 0) && a19 == 1) && a28 <= 7)) || ((((((10 <= a28 && a17 == 8) && a25 == 1) && a21 == 1) && a28 <= 10) && !(a11 == 1)) && a19 <= 0)) || (((((a21 == 1 && a17 <= 8) && a28 == 8) && !(a11 == 1)) && a25 == 0) && a19 <= 0)) || ((((9 <= a28 && a25 == 1) && a17 <= 8) && a28 <= 10) && a19 == 1)) || (((a25 == 1 && a11 == 0) && a19 == 1) && a28 <= 7) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((((((((11 <= a28 && a17 <= 7) && a19 == 1) || ((a17 <= 7 && a11 == 0) && a19 == 1)) || ((((a21 == 1 && a17 <= 8) && a28 <= 7) && a25 <= 0) && a19 <= 0)) || (a25 == 1 && a17 <= 7)) || ((((10 <= a28 && 9 <= a28) && a28 <= 10) && (((!(7 == a17) && a17 <= 8) && a19 == 1) || ((a11 == 0 && a17 <= 8) && a19 == 1))) && a25 <= 0)) || (((((a17 == 8 && 9 <= a28) && a21 == 1) && a28 <= 10) && (((!(7 == a17) && a17 <= 8) && a19 == 1) || ((a11 == 0 && a17 <= 8) && a19 == 1))) && a25 <= 0)) || (((a25 == 1 && a17 <= 8) && a19 == 1) && a28 <= 7)) || (a17 <= 7 && a19 <= 0)) || ((((a25 == 1 && a21 == 1) && a17 <= 8) && a19 == 1) && !(a11 == 1))) || (((((a17 == 8 && a25 == a11) && a21 == 1) && a11 == 0) && a19 == 1) && a28 <= 7)) || ((((((10 <= a28 && a17 == 8) && a25 == 1) && a21 == 1) && a28 <= 10) && !(a11 == 1)) && a19 <= 0)) || (((((a21 == 1 && a17 <= 8) && a28 == 8) && !(a11 == 1)) && a25 == 0) && a19 <= 0)) || ((((9 <= a28 && a25 == 1) && a17 <= 8) && a28 <= 10) && a19 == 1)) || (((a25 == 1 && a11 == 0) && a19 == 1) && a28 <= 7) RESULT: Ultimate proved your program to be correct! [2022-11-23 14:16:01,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cadfb5-fae7-408f-947d-ae81c22455e7/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE