./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label41.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_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/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_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label41.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/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_7c251d98-ed98-4727-8abe-d0eceaec96b9/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 91ebea43abc6271e81b3eed447826b716b76bbe82349fcd855bbd6d5636a25a9 --- 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 16:02:07,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:02:07,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:02:07,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:02:07,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:02:07,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:02:07,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:02:07,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:02:07,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:02:07,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:02:07,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:02:07,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:02:07,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:02:07,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:02:07,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:02:07,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:02:07,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:02:07,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:02:07,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:02:07,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:02:07,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:02:07,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:02:07,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:02:07,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:02:07,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:02:07,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:02:07,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:02:07,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:02:07,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:02:07,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:02:07,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:02:07,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:02:07,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:02:07,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:02:07,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:02:07,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:02:07,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:02:07,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:02:07,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:02:07,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:02:07,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:02:07,222 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 16:02:07,270 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:02:07,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:02:07,272 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:02:07,272 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:02:07,273 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:02:07,273 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:02:07,274 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:02:07,274 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:02:07,274 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:02:07,274 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 16:02:07,275 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:02:07,276 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:02:07,276 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 16:02:07,276 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 16:02:07,277 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:02:07,277 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 16:02:07,277 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 16:02:07,277 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 16:02:07,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:02:07,278 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 16:02:07,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:02:07,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 16:02:07,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:02:07,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:02:07,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:02:07,280 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:02:07,281 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 16:02:07,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:02:07,281 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:02:07,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:02:07,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:02:07,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:02:07,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:02:07,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:02:07,283 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 16:02:07,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:02:07,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:02:07,284 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 16:02:07,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 16:02:07,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:02:07,285 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:02:07,285 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_7c251d98-ed98-4727-8abe-d0eceaec96b9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91ebea43abc6271e81b3eed447826b716b76bbe82349fcd855bbd6d5636a25a9 [2022-11-23 16:02:07,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:02:07,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:02:07,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:02:07,600 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:02:07,601 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:02:07,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/eca-rers2012/Problem01_label41.c [2022-11-23 16:02:10,794 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:02:11,079 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:02:11,080 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/sv-benchmarks/c/eca-rers2012/Problem01_label41.c [2022-11-23 16:02:11,090 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/data/be9902f87/05beb4e4b0f14c7d83d21e3b5b7cbebe/FLAG9a6d24707 [2022-11-23 16:02:11,117 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/data/be9902f87/05beb4e4b0f14c7d83d21e3b5b7cbebe [2022-11-23 16:02:11,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:02:11,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:02:11,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:02:11,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:02:11,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:02:11,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:02:11" (1/1) ... [2022-11-23 16:02:11,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bce33a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:11, skipping insertion in model container [2022-11-23 16:02:11,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:02:11" (1/1) ... [2022-11-23 16:02:11,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:02:11,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:02:11,555 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_7c251d98-ed98-4727-8abe-d0eceaec96b9/sv-benchmarks/c/eca-rers2012/Problem01_label41.c[16127,16140] [2022-11-23 16:02:11,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:02:11,604 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:02:11,698 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_7c251d98-ed98-4727-8abe-d0eceaec96b9/sv-benchmarks/c/eca-rers2012/Problem01_label41.c[16127,16140] [2022-11-23 16:02:11,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:02:11,731 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:02:11,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:11 WrapperNode [2022-11-23 16:02:11,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:02:11,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:02:11,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:02:11,734 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:02:11,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:11" (1/1) ... [2022-11-23 16:02:11,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:11" (1/1) ... [2022-11-23 16:02:11,820 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2022-11-23 16:02:11,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:02:11,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:02:11,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:02:11,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:02:11,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:11" (1/1) ... [2022-11-23 16:02:11,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:11" (1/1) ... [2022-11-23 16:02:11,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:11" (1/1) ... [2022-11-23 16:02:11,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:11" (1/1) ... [2022-11-23 16:02:11,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:11" (1/1) ... [2022-11-23 16:02:11,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:11" (1/1) ... [2022-11-23 16:02:11,914 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:11" (1/1) ... [2022-11-23 16:02:11,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:11" (1/1) ... [2022-11-23 16:02:11,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:02:11,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:02:11,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:02:11,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:02:11,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:11" (1/1) ... [2022-11-23 16:02:11,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:02:11,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:02:11,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:02:11,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:02:12,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 16:02:12,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 16:02:12,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:02:12,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:02:12,184 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:02:12,186 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:02:13,320 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:02:13,630 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:02:13,630 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 16:02:13,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:02:13 BoogieIcfgContainer [2022-11-23 16:02:13,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:02:13,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:02:13,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:02:13,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:02:13,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:02:11" (1/3) ... [2022-11-23 16:02:13,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f37532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:02:13, skipping insertion in model container [2022-11-23 16:02:13,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:11" (2/3) ... [2022-11-23 16:02:13,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f37532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:02:13, skipping insertion in model container [2022-11-23 16:02:13,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:02:13" (3/3) ... [2022-11-23 16:02:13,648 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label41.c [2022-11-23 16:02:13,668 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:02:13,668 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 16:02:13,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:02:13,732 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;@1297e564, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:02:13,732 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 16:02:13,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:02:13,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-23 16:02:13,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:02:13,744 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] [2022-11-23 16:02:13,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:02:13,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:02:13,749 INFO L85 PathProgramCache]: Analyzing trace with hash 379009470, now seen corresponding path program 1 times [2022-11-23 16:02:13,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:02:13,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966419077] [2022-11-23 16:02:13,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:13,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:02:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:02:14,320 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 16:02:14,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:02:14,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966419077] [2022-11-23 16:02:14,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966419077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:02:14,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:02:14,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:02:14,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462812084] [2022-11-23 16:02:14,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:02:14,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:02:14,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:02:14,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:02:14,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:02:14,373 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 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 16:02:14,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:02:14,919 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2022-11-23 16:02:14,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:02:14,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-11-23 16:02:14,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:02:14,940 INFO L225 Difference]: With dead ends: 224 [2022-11-23 16:02:14,940 INFO L226 Difference]: Without dead ends: 145 [2022-11-23 16:02:14,944 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 16:02:14,951 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 15 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 16:02:14,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 23 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 16:02:14,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-23 16:02:15,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-11-23 16:02:15,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.8402777777777777) internal successors, (265), 144 states have internal predecessors, (265), 0 states have call successors, (0), 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 16:02:15,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 265 transitions. [2022-11-23 16:02:15,032 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 265 transitions. Word has length 71 [2022-11-23 16:02:15,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:02:15,033 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 265 transitions. [2022-11-23 16:02:15,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 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 16:02:15,034 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 265 transitions. [2022-11-23 16:02:15,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 16:02:15,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:02:15,036 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 16:02:15,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 16:02:15,037 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:02:15,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:02:15,038 INFO L85 PathProgramCache]: Analyzing trace with hash -615352239, now seen corresponding path program 1 times [2022-11-23 16:02:15,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:02:15,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493244129] [2022-11-23 16:02:15,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:15,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:02:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:02:15,170 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:02:15,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:02:15,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493244129] [2022-11-23 16:02:15,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493244129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:02:15,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:02:15,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:02:15,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826052534] [2022-11-23 16:02:15,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:02:15,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:02:15,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:02:15,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:02:15,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:02:15,176 INFO L87 Difference]: Start difference. First operand 145 states and 265 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:02:15,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:02:15,572 INFO L93 Difference]: Finished difference Result 431 states and 792 transitions. [2022-11-23 16:02:15,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:02:15,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-23 16:02:15,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:02:15,574 INFO L225 Difference]: With dead ends: 431 [2022-11-23 16:02:15,574 INFO L226 Difference]: Without dead ends: 287 [2022-11-23 16:02:15,575 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 16:02:15,577 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 80 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 16:02:15,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 34 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 16:02:15,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-23 16:02:15,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-11-23 16:02:15,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.6958041958041958) internal successors, (485), 286 states have internal predecessors, (485), 0 states have call successors, (0), 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 16:02:15,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 485 transitions. [2022-11-23 16:02:15,601 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 485 transitions. Word has length 77 [2022-11-23 16:02:15,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:02:15,601 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 485 transitions. [2022-11-23 16:02:15,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:02:15,602 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 485 transitions. [2022-11-23 16:02:15,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-23 16:02:15,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:02:15,611 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:02:15,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 16:02:15,612 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:02:15,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:02:15,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1344575438, now seen corresponding path program 1 times [2022-11-23 16:02:15,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:02:15,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352053507] [2022-11-23 16:02:15,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:15,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:02:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:02:15,839 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:02:15,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:02:15,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352053507] [2022-11-23 16:02:15,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352053507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:02:15,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:02:15,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:02:15,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087921510] [2022-11-23 16:02:15,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:02:15,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:02:15,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:02:15,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:02:15,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:02:15,851 INFO L87 Difference]: Start difference. First operand 287 states and 485 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 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 16:02:16,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:02:16,269 INFO L93 Difference]: Finished difference Result 857 states and 1452 transitions. [2022-11-23 16:02:16,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:02:16,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-11-23 16:02:16,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:02:16,273 INFO L225 Difference]: With dead ends: 857 [2022-11-23 16:02:16,274 INFO L226 Difference]: Without dead ends: 571 [2022-11-23 16:02:16,285 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 16:02:16,287 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 72 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 16:02:16,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 33 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 16:02:16,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-23 16:02:16,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2022-11-23 16:02:16,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.5701754385964912) internal successors, (895), 570 states have internal predecessors, (895), 0 states have call successors, (0), 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 16:02:16,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 895 transitions. [2022-11-23 16:02:16,339 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 895 transitions. Word has length 92 [2022-11-23 16:02:16,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:02:16,340 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 895 transitions. [2022-11-23 16:02:16,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 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 16:02:16,340 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 895 transitions. [2022-11-23 16:02:16,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-23 16:02:16,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:02:16,350 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:02:16,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 16:02:16,351 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:02:16,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:02:16,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1933841620, now seen corresponding path program 1 times [2022-11-23 16:02:16,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:02:16,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027810592] [2022-11-23 16:02:16,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:16,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:02:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:02:16,597 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 16:02:16,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:02:16,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027810592] [2022-11-23 16:02:16,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027810592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:02:16,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:02:16,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:02:16,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344722252] [2022-11-23 16:02:16,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:02:16,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:02:16,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:02:16,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:02:16,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:02:16,600 INFO L87 Difference]: Start difference. First operand 571 states and 895 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 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 16:02:17,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:02:17,041 INFO L93 Difference]: Finished difference Result 1354 states and 2147 transitions. [2022-11-23 16:02:17,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:02:17,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 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 105 [2022-11-23 16:02:17,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:02:17,046 INFO L225 Difference]: With dead ends: 1354 [2022-11-23 16:02:17,046 INFO L226 Difference]: Without dead ends: 784 [2022-11-23 16:02:17,047 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 16:02:17,053 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 87 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 16:02:17,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 26 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 16:02:17,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-11-23 16:02:17,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 571. [2022-11-23 16:02:17,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.5614035087719298) internal successors, (890), 570 states have internal predecessors, (890), 0 states have call successors, (0), 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 16:02:17,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 890 transitions. [2022-11-23 16:02:17,080 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 890 transitions. Word has length 105 [2022-11-23 16:02:17,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:02:17,082 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 890 transitions. [2022-11-23 16:02:17,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 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 16:02:17,083 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 890 transitions. [2022-11-23 16:02:17,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-23 16:02:17,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:02:17,092 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:02:17,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 16:02:17,093 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:02:17,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:02:17,095 INFO L85 PathProgramCache]: Analyzing trace with hash 218729974, now seen corresponding path program 1 times [2022-11-23 16:02:17,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:02:17,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276119304] [2022-11-23 16:02:17,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:17,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:02:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:02:17,334 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-23 16:02:17,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:02:17,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276119304] [2022-11-23 16:02:17,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276119304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:02:17,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:02:17,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:02:17,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508993537] [2022-11-23 16:02:17,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:02:17,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:02:17,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:02:17,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:02:17,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:02:17,337 INFO L87 Difference]: Start difference. First operand 571 states and 890 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 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 16:02:17,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:02:17,705 INFO L93 Difference]: Finished difference Result 1425 states and 2189 transitions. [2022-11-23 16:02:17,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:02:17,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 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 109 [2022-11-23 16:02:17,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:02:17,710 INFO L225 Difference]: With dead ends: 1425 [2022-11-23 16:02:17,711 INFO L226 Difference]: Without dead ends: 855 [2022-11-23 16:02:17,712 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 16:02:17,714 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 77 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:02:17,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 50 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 16:02:17,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-11-23 16:02:17,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 713. [2022-11-23 16:02:17,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 712 states have (on average 1.5) internal successors, (1068), 712 states have internal predecessors, (1068), 0 states have call successors, (0), 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 16:02:17,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1068 transitions. [2022-11-23 16:02:17,743 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1068 transitions. Word has length 109 [2022-11-23 16:02:17,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:02:17,744 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 1068 transitions. [2022-11-23 16:02:17,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 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 16:02:17,745 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1068 transitions. [2022-11-23 16:02:17,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-23 16:02:17,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:02:17,752 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-11-23 16:02:17,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 16:02:17,752 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:02:17,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:02:17,753 INFO L85 PathProgramCache]: Analyzing trace with hash -692397588, now seen corresponding path program 1 times [2022-11-23 16:02:17,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:02:17,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129344101] [2022-11-23 16:02:17,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:17,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:02:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:02:17,935 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-23 16:02:17,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:02:17,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129344101] [2022-11-23 16:02:17,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129344101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:02:17,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:02:17,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:02:17,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445323788] [2022-11-23 16:02:17,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:02:17,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:02:17,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:02:17,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:02:17,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:02:17,939 INFO L87 Difference]: Start difference. First operand 713 states and 1068 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 16:02:18,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:02:18,304 INFO L93 Difference]: Finished difference Result 1780 states and 2616 transitions. [2022-11-23 16:02:18,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:02:18,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 122 [2022-11-23 16:02:18,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:02:18,309 INFO L225 Difference]: With dead ends: 1780 [2022-11-23 16:02:18,309 INFO L226 Difference]: Without dead ends: 1068 [2022-11-23 16:02:18,310 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 16:02:18,312 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 81 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:02:18,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 19 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 16:02:18,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-11-23 16:02:18,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 855. [2022-11-23 16:02:18,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.4519906323185012) internal successors, (1240), 854 states have internal predecessors, (1240), 0 states have call successors, (0), 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 16:02:18,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1240 transitions. [2022-11-23 16:02:18,342 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1240 transitions. Word has length 122 [2022-11-23 16:02:18,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:02:18,342 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1240 transitions. [2022-11-23 16:02:18,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 16:02:18,343 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1240 transitions. [2022-11-23 16:02:18,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-23 16:02:18,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:02:18,346 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-11-23 16:02:18,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 16:02:18,346 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:02:18,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:02:18,347 INFO L85 PathProgramCache]: Analyzing trace with hash 2030922133, now seen corresponding path program 1 times [2022-11-23 16:02:18,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:02:18,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569824610] [2022-11-23 16:02:18,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:18,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:02:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:02:18,592 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-23 16:02:18,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:02:18,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569824610] [2022-11-23 16:02:18,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569824610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:02:18,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:02:18,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:02:18,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66968390] [2022-11-23 16:02:18,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:02:18,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:02:18,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:02:18,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:02:18,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:02:18,596 INFO L87 Difference]: Start difference. First operand 855 states and 1240 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 16:02:18,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:02:18,961 INFO L93 Difference]: Finished difference Result 1851 states and 2699 transitions. [2022-11-23 16:02:18,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:02:18,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-11-23 16:02:18,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:02:18,965 INFO L225 Difference]: With dead ends: 1851 [2022-11-23 16:02:18,966 INFO L226 Difference]: Without dead ends: 997 [2022-11-23 16:02:18,967 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 16:02:18,969 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 62 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:02:18,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 58 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 16:02:18,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2022-11-23 16:02:18,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2022-11-23 16:02:18,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.4367567567567567) internal successors, (1329), 925 states have internal predecessors, (1329), 0 states have call successors, (0), 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 16:02:18,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1329 transitions. [2022-11-23 16:02:18,994 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1329 transitions. Word has length 124 [2022-11-23 16:02:18,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:02:18,995 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1329 transitions. [2022-11-23 16:02:18,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 16:02:18,995 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1329 transitions. [2022-11-23 16:02:18,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-23 16:02:18,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:02:18,999 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:02:18,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 16:02:18,999 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:02:18,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:02:19,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1951034433, now seen corresponding path program 1 times [2022-11-23 16:02:19,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:02:19,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46342257] [2022-11-23 16:02:19,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:19,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:02:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:02:19,238 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-23 16:02:19,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:02:19,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46342257] [2022-11-23 16:02:19,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46342257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:02:19,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:02:19,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:02:19,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175723643] [2022-11-23 16:02:19,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:02:19,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:02:19,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:02:19,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:02:19,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:02:19,241 INFO L87 Difference]: Start difference. First operand 926 states and 1329 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:02:19,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:02:19,740 INFO L93 Difference]: Finished difference Result 2206 states and 3151 transitions. [2022-11-23 16:02:19,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:02:19,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-23 16:02:19,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:02:19,746 INFO L225 Difference]: With dead ends: 2206 [2022-11-23 16:02:19,746 INFO L226 Difference]: Without dead ends: 1281 [2022-11-23 16:02:19,748 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 16:02:19,749 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 202 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 16:02:19,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 30 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 16:02:19,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2022-11-23 16:02:19,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 997. [2022-11-23 16:02:19,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.4116465863453815) internal successors, (1406), 996 states have internal predecessors, (1406), 0 states have call successors, (0), 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 16:02:19,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1406 transitions. [2022-11-23 16:02:19,784 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1406 transitions. Word has length 140 [2022-11-23 16:02:19,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:02:19,787 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1406 transitions. [2022-11-23 16:02:19,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:02:19,788 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1406 transitions. [2022-11-23 16:02:19,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-23 16:02:19,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:02:19,792 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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, 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] [2022-11-23 16:02:19,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 16:02:19,792 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:02:19,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:02:19,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1229069980, now seen corresponding path program 1 times [2022-11-23 16:02:19,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:02:19,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322104747] [2022-11-23 16:02:19,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:19,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:02:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:02:20,123 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-23 16:02:20,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:02:20,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322104747] [2022-11-23 16:02:20,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322104747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:02:20,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:02:20,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:02:20,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809809392] [2022-11-23 16:02:20,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:02:20,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:02:20,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:02:20,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:02:20,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:02:20,126 INFO L87 Difference]: Start difference. First operand 997 states and 1406 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 16:02:20,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:02:20,642 INFO L93 Difference]: Finished difference Result 2206 states and 3072 transitions. [2022-11-23 16:02:20,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:02:20,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 154 [2022-11-23 16:02:20,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:02:20,647 INFO L225 Difference]: With dead ends: 2206 [2022-11-23 16:02:20,647 INFO L226 Difference]: Without dead ends: 1210 [2022-11-23 16:02:20,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 16:02:20,649 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 200 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 16:02:20,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 54 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 16:02:20,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2022-11-23 16:02:20,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2022-11-23 16:02:20,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 1.3655536028119508) internal successors, (1554), 1138 states have internal predecessors, (1554), 0 states have call successors, (0), 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 16:02:20,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1554 transitions. [2022-11-23 16:02:20,681 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1554 transitions. Word has length 154 [2022-11-23 16:02:20,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:02:20,681 INFO L495 AbstractCegarLoop]: Abstraction has 1139 states and 1554 transitions. [2022-11-23 16:02:20,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 16:02:20,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1554 transitions. [2022-11-23 16:02:20,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-23 16:02:20,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:02:20,685 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 16:02:20,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 16:02:20,686 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:02:20,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:02:20,691 INFO L85 PathProgramCache]: Analyzing trace with hash -2145613825, now seen corresponding path program 1 times [2022-11-23 16:02:20,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:02:20,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899486755] [2022-11-23 16:02:20,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:20,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:02:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:02:21,136 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 119 proven. 11 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-23 16:02:21,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:02:21,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899486755] [2022-11-23 16:02:21,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899486755] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:02:21,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468217946] [2022-11-23 16:02:21,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:21,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:02:21,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:02:21,143 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:02:21,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 16:02:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:02:21,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 16:02:21,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:02:21,487 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-23 16:02:21,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:02:21,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468217946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:02:21,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:02:21,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-23 16:02:21,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565008342] [2022-11-23 16:02:21,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:02:21,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:02:21,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:02:21,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:02:21,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:02:21,491 INFO L87 Difference]: Start difference. First operand 1139 states and 1554 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:02:21,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:02:21,829 INFO L93 Difference]: Finished difference Result 1354 states and 1835 transitions. [2022-11-23 16:02:21,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:02:21,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2022-11-23 16:02:21,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:02:21,836 INFO L225 Difference]: With dead ends: 1354 [2022-11-23 16:02:21,837 INFO L226 Difference]: Without dead ends: 1352 [2022-11-23 16:02:21,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:02:21,838 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 23 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:02:21,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 27 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 16:02:21,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2022-11-23 16:02:21,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1139. [2022-11-23 16:02:21,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 1.3655536028119508) internal successors, (1554), 1138 states have internal predecessors, (1554), 0 states have call successors, (0), 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 16:02:21,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1554 transitions. [2022-11-23 16:02:21,882 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1554 transitions. Word has length 171 [2022-11-23 16:02:21,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:02:21,884 INFO L495 AbstractCegarLoop]: Abstraction has 1139 states and 1554 transitions. [2022-11-23 16:02:21,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:02:21,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1554 transitions. [2022-11-23 16:02:21,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-23 16:02:21,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:02:21,889 INFO L195 NwaCegarLoop]: trace histogram [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, 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 16:02:21,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 16:02:22,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 16:02:22,096 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:02:22,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:02:22,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1532612480, now seen corresponding path program 1 times [2022-11-23 16:02:22,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:02:22,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732897166] [2022-11-23 16:02:22,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:22,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:02:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:02:22,710 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 63 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:02:22,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:02:22,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732897166] [2022-11-23 16:02:22,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732897166] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:02:22,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55556908] [2022-11-23 16:02:22,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:22,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:02:22,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:02:22,713 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:02:22,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 16:02:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:02:22,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 16:02:22,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:02:23,123 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-23 16:02:23,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:02:23,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55556908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:02:23,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:02:23,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-11-23 16:02:23,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657549026] [2022-11-23 16:02:23,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:02:23,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:02:23,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:02:23,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:02:23,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 16:02:23,125 INFO L87 Difference]: Start difference. First operand 1139 states and 1554 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:02:23,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:02:23,484 INFO L93 Difference]: Finished difference Result 2277 states and 3107 transitions. [2022-11-23 16:02:23,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:02:23,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-11-23 16:02:23,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:02:23,489 INFO L225 Difference]: With dead ends: 2277 [2022-11-23 16:02:23,489 INFO L226 Difference]: Without dead ends: 1139 [2022-11-23 16:02:23,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 16:02:23,492 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:02:23,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 108 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 16:02:23,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-11-23 16:02:23,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 997. [2022-11-23 16:02:23,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.2720883534136547) internal successors, (1267), 996 states have internal predecessors, (1267), 0 states have call successors, (0), 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 16:02:23,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1267 transitions. [2022-11-23 16:02:23,524 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1267 transitions. Word has length 175 [2022-11-23 16:02:23,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:02:23,525 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1267 transitions. [2022-11-23 16:02:23,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:02:23,525 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1267 transitions. [2022-11-23 16:02:23,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-23 16:02:23,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:02:23,529 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 16:02:23,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 16:02:23,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:02:23,735 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:02:23,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:02:23,736 INFO L85 PathProgramCache]: Analyzing trace with hash -937112400, now seen corresponding path program 1 times [2022-11-23 16:02:23,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:02:23,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125506088] [2022-11-23 16:02:23,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:23,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:02:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:02:24,074 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 125 proven. 11 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 16:02:24,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:02:24,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125506088] [2022-11-23 16:02:24,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125506088] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:02:24,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637336262] [2022-11-23 16:02:24,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:24,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:02:24,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:02:24,077 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:02:24,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 16:02:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:02:24,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 16:02:24,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:02:24,385 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-23 16:02:24,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:02:24,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637336262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:02:24,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:02:24,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-23 16:02:24,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066855659] [2022-11-23 16:02:24,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:02:24,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:02:24,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:02:24,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:02:24,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:02:24,388 INFO L87 Difference]: Start difference. First operand 997 states and 1267 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:02:24,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:02:24,751 INFO L93 Difference]: Finished difference Result 1991 states and 2532 transitions. [2022-11-23 16:02:24,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:02:24,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-11-23 16:02:24,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:02:24,752 INFO L225 Difference]: With dead ends: 1991 [2022-11-23 16:02:24,752 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 16:02:24,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:02:24,754 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 7 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:02:24,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 123 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 16:02:24,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 16:02:24,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 16:02:24,755 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 16:02:24,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 16:02:24,756 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 177 [2022-11-23 16:02:24,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:02:24,756 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 16:02:24,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:02:24,756 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 16:02:24,756 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 16:02:24,759 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 16:02:24,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 16:02:24,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:02:24,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 16:02:25,772 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2022-11-23 16:02:25,773 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2022-11-23 16:02:25,773 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2022-11-23 16:02:25,773 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2022-11-23 16:02:25,773 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2022-11-23 16:02:25,773 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2022-11-23 16:02:25,773 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2022-11-23 16:02:25,773 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2022-11-23 16:02:25,773 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2022-11-23 16:02:25,773 INFO L899 garLoopResultBuilder]: For program point L437-1(lines 40 585) no Hoare annotation was computed. [2022-11-23 16:02:25,774 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2022-11-23 16:02:25,774 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2022-11-23 16:02:25,774 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2022-11-23 16:02:25,774 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2022-11-23 16:02:25,774 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2022-11-23 16:02:25,774 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2022-11-23 16:02:25,774 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2022-11-23 16:02:25,774 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2022-11-23 16:02:25,774 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2022-11-23 16:02:25,775 INFO L899 garLoopResultBuilder]: For program point L440-1(lines 40 585) no Hoare annotation was computed. [2022-11-23 16:02:25,775 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2022-11-23 16:02:25,775 INFO L899 garLoopResultBuilder]: For program point L441(line 441) no Hoare annotation was computed. [2022-11-23 16:02:25,775 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2022-11-23 16:02:25,775 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2022-11-23 16:02:25,775 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2022-11-23 16:02:25,775 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2022-11-23 16:02:25,775 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2022-11-23 16:02:25,775 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2022-11-23 16:02:25,775 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2022-11-23 16:02:25,776 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2022-11-23 16:02:25,776 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2022-11-23 16:02:25,776 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2022-11-23 16:02:25,776 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2022-11-23 16:02:25,776 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2022-11-23 16:02:25,776 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2022-11-23 16:02:25,776 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2022-11-23 16:02:25,776 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2022-11-23 16:02:25,776 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2022-11-23 16:02:25,776 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2022-11-23 16:02:25,777 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 16:02:25,777 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2022-11-23 16:02:25,777 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2022-11-23 16:02:25,777 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2022-11-23 16:02:25,777 INFO L895 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse3 (= ~a20~0 1)) (.cse5 (<= ~a21~0 0)) (.cse0 (<= ~a17~0 0)) (.cse8 (<= ~a16~0 5)) (.cse6 (<= 5 ~a16~0)) (.cse2 (= ~a21~0 1)) (.cse7 (not (= ~a7~0 1))) (.cse1 (<= 14 ~a8~0)) (.cse4 (= ~a17~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse2 .cse4 .cse3) (and .cse5 .cse0 .cse3) (and .cse5 .cse4 .cse3) (and .cse6 .cse7 .cse0 .cse1 .cse2) (and .cse5 .cse4 .cse8) (and .cse0 .cse2 .cse8) (and (or (and .cse2 (<= 15 ~a8~0)) (and .cse6 .cse2)) .cse7 .cse1 .cse4))) [2022-11-23 16:02:25,778 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2022-11-23 16:02:25,778 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2022-11-23 16:02:25,778 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2022-11-23 16:02:25,778 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2022-11-23 16:02:25,778 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2022-11-23 16:02:25,778 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2022-11-23 16:02:25,778 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2022-11-23 16:02:25,778 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 16:02:25,778 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2022-11-23 16:02:25,779 INFO L902 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2022-11-23 16:02:25,779 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2022-11-23 16:02:25,779 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2022-11-23 16:02:25,779 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2022-11-23 16:02:25,779 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2022-11-23 16:02:25,779 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2022-11-23 16:02:25,779 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2022-11-23 16:02:25,779 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2022-11-23 16:02:25,779 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2022-11-23 16:02:25,780 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2022-11-23 16:02:25,780 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2022-11-23 16:02:25,780 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2022-11-23 16:02:25,780 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2022-11-23 16:02:25,780 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2022-11-23 16:02:25,781 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse3 (= ~a20~0 1)) (.cse5 (<= ~a21~0 0)) (.cse0 (<= ~a17~0 0)) (.cse8 (<= ~a16~0 5)) (.cse6 (<= 5 ~a16~0)) (.cse2 (= ~a21~0 1)) (.cse7 (not (= ~a7~0 1))) (.cse1 (<= 14 ~a8~0)) (.cse4 (= ~a17~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse2 .cse4 .cse3) (and .cse5 .cse0 .cse3) (and .cse5 .cse4 .cse3) (and .cse6 .cse7 .cse0 .cse1 .cse2) (and .cse5 .cse4 .cse8) (and .cse0 .cse2 .cse8) (and (or (and .cse2 (<= 15 ~a8~0)) (and .cse6 .cse2)) .cse7 .cse1 .cse4))) [2022-11-23 16:02:25,781 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2022-11-23 16:02:25,781 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 441) no Hoare annotation was computed. [2022-11-23 16:02:25,781 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2022-11-23 16:02:25,781 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2022-11-23 16:02:25,781 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2022-11-23 16:02:25,782 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2022-11-23 16:02:25,782 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2022-11-23 16:02:25,782 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2022-11-23 16:02:25,785 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:02:25,788 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 16:02:25,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:02:25 BoogieIcfgContainer [2022-11-23 16:02:25,810 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 16:02:25,811 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 16:02:25,814 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 16:02:25,814 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 16:02:25,815 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:02:13" (3/4) ... [2022-11-23 16:02:25,818 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 16:02:25,848 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 110 nodes and edges [2022-11-23 16:02:25,849 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-23 16:02:25,851 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-23 16:02:25,852 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 16:02:25,988 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 16:02:25,988 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 16:02:25,989 INFO L158 Benchmark]: Toolchain (without parser) took 14867.23ms. Allocated memory was 190.8MB in the beginning and 325.1MB in the end (delta: 134.2MB). Free memory was 142.6MB in the beginning and 121.7MB in the end (delta: 21.0MB). Peak memory consumption was 157.3MB. Max. memory is 16.1GB. [2022-11-23 16:02:25,989 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 142.6MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 16:02:25,990 INFO L158 Benchmark]: CACSL2BoogieTranslator took 607.76ms. Allocated memory is still 190.8MB. Free memory was 142.6MB in the beginning and 115.4MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-23 16:02:25,990 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.06ms. Allocated memory is still 190.8MB. Free memory was 115.4MB in the beginning and 109.6MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-23 16:02:25,991 INFO L158 Benchmark]: Boogie Preprocessor took 98.61ms. Allocated memory is still 190.8MB. Free memory was 109.6MB in the beginning and 104.9MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 16:02:25,991 INFO L158 Benchmark]: RCFGBuilder took 1709.69ms. Allocated memory is still 190.8MB. Free memory was 104.9MB in the beginning and 128.5MB in the end (delta: -23.6MB). Peak memory consumption was 46.7MB. Max. memory is 16.1GB. [2022-11-23 16:02:25,992 INFO L158 Benchmark]: TraceAbstraction took 12175.33ms. Allocated memory was 190.8MB in the beginning and 325.1MB in the end (delta: 134.2MB). Free memory was 127.5MB in the beginning and 133.2MB in the end (delta: -5.7MB). Peak memory consumption was 127.4MB. Max. memory is 16.1GB. [2022-11-23 16:02:25,993 INFO L158 Benchmark]: Witness Printer took 177.12ms. Allocated memory is still 325.1MB. Free memory was 133.2MB in the beginning and 121.7MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 16:02:25,995 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 142.6MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 607.76ms. Allocated memory is still 190.8MB. Free memory was 142.6MB in the beginning and 115.4MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.06ms. Allocated memory is still 190.8MB. Free memory was 115.4MB in the beginning and 109.6MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 98.61ms. Allocated memory is still 190.8MB. Free memory was 109.6MB in the beginning and 104.9MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1709.69ms. Allocated memory is still 190.8MB. Free memory was 104.9MB in the beginning and 128.5MB in the end (delta: -23.6MB). Peak memory consumption was 46.7MB. Max. memory is 16.1GB. * TraceAbstraction took 12175.33ms. Allocated memory was 190.8MB in the beginning and 325.1MB in the end (delta: 134.2MB). Free memory was 127.5MB in the beginning and 133.2MB in the end (delta: -5.7MB). Peak memory consumption was 127.4MB. Max. memory is 16.1GB. * Witness Printer took 177.12ms. Allocated memory is still 325.1MB. Free memory was 133.2MB in the beginning and 121.7MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. 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: 441]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.1s, OverallIterations: 12, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 911 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 911 mSDsluCounter, 585 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 704 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2808 IncrementalHoareTripleChecker+Invalid, 3512 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 704 mSolverCounterUnsat, 534 mSDtfsCounter, 2808 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 555 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1139occurred in iteration=9, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 1349 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 33 NumberOfFragments, 215 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 3174 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 2040 NumberOfCodeBlocks, 2040 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2025 ConstructedInterpolants, 0 QuantifiedInterpolants, 7188 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1128 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 15 InterpolantComputations, 12 PerfectInterpolantSequences, 1438/1552 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: 593]: Loop Invariant Derived loop invariant: (((((((((a17 <= 0 && 14 <= a8) && a21 == 1) && a20 == 1) || ((a21 == 1 && a17 == 1) && a20 == 1)) || ((a21 <= 0 && a17 <= 0) && a20 == 1)) || ((a21 <= 0 && a17 == 1) && a20 == 1)) || ((((5 <= a16 && !(a7 == 1)) && a17 <= 0) && 14 <= a8) && a21 == 1)) || ((a21 <= 0 && a17 == 1) && a16 <= 5)) || ((a17 <= 0 && a21 == 1) && a16 <= 5)) || (((((a21 == 1 && 15 <= a8) || (5 <= a16 && a21 == 1)) && !(a7 == 1)) && 14 <= a8) && a17 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((((a17 <= 0 && 14 <= a8) && a21 == 1) && a20 == 1) || ((a21 == 1 && a17 == 1) && a20 == 1)) || ((a21 <= 0 && a17 <= 0) && a20 == 1)) || ((a21 <= 0 && a17 == 1) && a20 == 1)) || ((((5 <= a16 && !(a7 == 1)) && a17 <= 0) && 14 <= a8) && a21 == 1)) || ((a21 <= 0 && a17 == 1) && a16 <= 5)) || ((a17 <= 0 && a21 == 1) && a16 <= 5)) || (((((a21 == 1 && 15 <= a8) || (5 <= a16 && a21 == 1)) && !(a7 == 1)) && 14 <= a8) && a17 == 1) RESULT: Ultimate proved your program to be correct! [2022-11-23 16:02:26,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c251d98-ed98-4727-8abe-d0eceaec96b9/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