./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label23.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_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/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_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label23.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/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_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/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 db3674d4e110d61289adcfc52216f8004ef1ec49416f84e6bf350103cb2e8879 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:29:21,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:29:21,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:29:21,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:29:21,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:29:21,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:29:21,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:29:21,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:29:21,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:29:21,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:29:21,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:29:21,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:29:21,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:29:21,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:29:21,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:29:21,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:29:21,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:29:21,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:29:21,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:29:21,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:29:21,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:29:21,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:29:21,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:29:21,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:29:21,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:29:21,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:29:21,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:29:21,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:29:21,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:29:21,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:29:21,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:29:21,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:29:21,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:29:21,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:29:21,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:29:21,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:29:21,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:29:21,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:29:21,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:29:21,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:29:21,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:29:21,142 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:29:21,188 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:29:21,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:29:21,188 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:29:21,189 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:29:21,189 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:29:21,190 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:29:21,190 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:29:21,190 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:29:21,190 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:29:21,190 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:29:21,191 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:29:21,192 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:29:21,192 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:29:21,192 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:29:21,192 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:29:21,193 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:29:21,193 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:29:21,193 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:29:21,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:29:21,194 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:29:21,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:29:21,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:29:21,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:29:21,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:29:21,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:29:21,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:29:21,196 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:29:21,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:29:21,196 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:29:21,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:29:21,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:29:21,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:29:21,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:29:21,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:29:21,198 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:29:21,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:29:21,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:29:21,211 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:29:21,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:29:21,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:29:21,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:29:21,212 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_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db3674d4e110d61289adcfc52216f8004ef1ec49416f84e6bf350103cb2e8879 [2022-11-23 14:29:21,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:29:21,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:29:21,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:29:21,505 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:29:21,506 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:29:21,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/eca-rers2012/Problem02_label23.c [2022-11-23 14:29:24,620 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:29:24,922 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:29:24,923 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/sv-benchmarks/c/eca-rers2012/Problem02_label23.c [2022-11-23 14:29:24,934 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/bin/utaipan-Q6hlc19bkW/data/8582ceca9/c72317dd77a143c082d829d42d30b037/FLAGe7be18373 [2022-11-23 14:29:24,966 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/bin/utaipan-Q6hlc19bkW/data/8582ceca9/c72317dd77a143c082d829d42d30b037 [2022-11-23 14:29:24,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:29:24,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:29:24,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:29:24,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:29:24,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:29:24,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:29:24" (1/1) ... [2022-11-23 14:29:24,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ce1c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:24, skipping insertion in model container [2022-11-23 14:29:24,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:29:24" (1/1) ... [2022-11-23 14:29:24,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:29:25,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:29:25,403 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_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/sv-benchmarks/c/eca-rers2012/Problem02_label23.c[20538,20551] [2022-11-23 14:29:25,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:29:25,435 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:29:25,575 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_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/sv-benchmarks/c/eca-rers2012/Problem02_label23.c[20538,20551] [2022-11-23 14:29:25,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:29:25,611 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:29:25,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:25 WrapperNode [2022-11-23 14:29:25,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:29:25,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:29:25,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:29:25,615 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:29:25,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:25" (1/1) ... [2022-11-23 14:29:25,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:25" (1/1) ... [2022-11-23 14:29:25,702 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 668 [2022-11-23 14:29:25,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:29:25,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:29:25,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:29:25,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:29:25,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:25" (1/1) ... [2022-11-23 14:29:25,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:25" (1/1) ... [2022-11-23 14:29:25,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:25" (1/1) ... [2022-11-23 14:29:25,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:25" (1/1) ... [2022-11-23 14:29:25,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:25" (1/1) ... [2022-11-23 14:29:25,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:25" (1/1) ... [2022-11-23 14:29:25,793 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:25" (1/1) ... [2022-11-23 14:29:25,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:25" (1/1) ... [2022-11-23 14:29:25,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:29:25,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:29:25,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:29:25,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:29:25,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:25" (1/1) ... [2022-11-23 14:29:25,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:29:25,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:29:25,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:29:25,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:29:25,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:29:25,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:29:25,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:29:25,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:29:26,009 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:29:26,012 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:29:27,243 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:29:27,557 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:29:27,557 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 14:29:27,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:29:27 BoogieIcfgContainer [2022-11-23 14:29:27,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:29:27,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:29:27,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:29:27,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:29:27,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:29:24" (1/3) ... [2022-11-23 14:29:27,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6247ca96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:29:27, skipping insertion in model container [2022-11-23 14:29:27,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:25" (2/3) ... [2022-11-23 14:29:27,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6247ca96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:29:27, skipping insertion in model container [2022-11-23 14:29:27,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:29:27" (3/3) ... [2022-11-23 14:29:27,575 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label23.c [2022-11-23 14:29:27,598 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:29:27,598 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:29:27,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:29:27,684 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;@7c8d22fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:29:27,685 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:29:27,690 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:27,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 14:29:27,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:27,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:29:27,703 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:29:27,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:27,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1243333622, now seen corresponding path program 1 times [2022-11-23 14:29:27,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:27,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736533194] [2022-11-23 14:29:27,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:27,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:28,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:29:28,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:28,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736533194] [2022-11-23 14:29:28,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736533194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:28,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:29:28,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:29:28,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524151423] [2022-11-23 14:29:28,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:28,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:29:28,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:28,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:29:28,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:28,330 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:28,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:28,888 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2022-11-23 14:29:28,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:29:28,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-23 14:29:28,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:28,901 INFO L225 Difference]: With dead ends: 251 [2022-11-23 14:29:28,902 INFO L226 Difference]: Without dead ends: 163 [2022-11-23 14:29:28,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:28,908 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 20 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:28,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 55 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:29:28,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-23 14:29:28,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-11-23 14:29:28,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.8395061728395061) internal successors, (298), 162 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:28,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2022-11-23 14:29:28,964 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2022-11-23 14:29:28,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:28,966 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2022-11-23 14:29:28,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:28,967 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2022-11-23 14:29:28,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-23 14:29:28,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:28,972 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:29:28,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:29:28,973 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:29:28,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:28,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1833075691, now seen corresponding path program 1 times [2022-11-23 14:29:28,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:28,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033418743] [2022-11-23 14:29:28,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:28,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:29,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:29:29,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:29,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033418743] [2022-11-23 14:29:29,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033418743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:29,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:29:29,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:29:29,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005503482] [2022-11-23 14:29:29,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:29,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:29:29,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:29,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:29:29,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:29,410 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:29,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:29,870 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2022-11-23 14:29:29,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:29:29,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-11-23 14:29:29,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:29,872 INFO L225 Difference]: With dead ends: 485 [2022-11-23 14:29:29,873 INFO L226 Difference]: Without dead ends: 323 [2022-11-23 14:29:29,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:29,875 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 78 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:29,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 63 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:29:29,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-11-23 14:29:29,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2022-11-23 14:29:29,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.515527950310559) internal successors, (488), 322 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:29,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2022-11-23 14:29:29,907 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2022-11-23 14:29:29,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:29,907 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2022-11-23 14:29:29,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:29,908 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2022-11-23 14:29:29,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-23 14:29:29,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:29,911 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:29:29,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:29:29,912 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:29:29,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:29,913 INFO L85 PathProgramCache]: Analyzing trace with hash -2045172432, now seen corresponding path program 1 times [2022-11-23 14:29:29,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:29,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968173947] [2022-11-23 14:29:29,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:29,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:30,137 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:29:30,140 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:30,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968173947] [2022-11-23 14:29:30,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968173947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:30,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:29:30,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:29:30,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941266079] [2022-11-23 14:29:30,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:30,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:29:30,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:30,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:29:30,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:30,145 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:30,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:30,538 INFO L93 Difference]: Finished difference Result 805 states and 1271 transitions. [2022-11-23 14:29:30,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:29:30,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-11-23 14:29:30,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:30,545 INFO L225 Difference]: With dead ends: 805 [2022-11-23 14:29:30,545 INFO L226 Difference]: Without dead ends: 483 [2022-11-23 14:29:30,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:30,548 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 77 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:30,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 139 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:29:30,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-23 14:29:30,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2022-11-23 14:29:30,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.4066390041493777) internal successors, (678), 482 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:30,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 678 transitions. [2022-11-23 14:29:30,581 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 678 transitions. Word has length 89 [2022-11-23 14:29:30,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:30,582 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 678 transitions. [2022-11-23 14:29:30,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:30,590 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 678 transitions. [2022-11-23 14:29:30,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-23 14:29:30,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:30,598 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:29:30,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:29:30,599 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:29:30,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:30,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2122130693, now seen corresponding path program 1 times [2022-11-23 14:29:30,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:30,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046550918] [2022-11-23 14:29:30,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:30,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:30,792 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:29:30,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:30,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046550918] [2022-11-23 14:29:30,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046550918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:30,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:29:30,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:29:30,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580361933] [2022-11-23 14:29:30,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:30,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:29:30,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:30,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:29:30,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:30,795 INFO L87 Difference]: Start difference. First operand 483 states and 678 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:31,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:31,182 INFO L93 Difference]: Finished difference Result 1205 states and 1701 transitions. [2022-11-23 14:29:31,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:29:31,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-11-23 14:29:31,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:31,186 INFO L225 Difference]: With dead ends: 1205 [2022-11-23 14:29:31,187 INFO L226 Difference]: Without dead ends: 723 [2022-11-23 14:29:31,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:31,189 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:31,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 147 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:29:31,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-11-23 14:29:31,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2022-11-23 14:29:31,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.31994459833795) internal successors, (953), 722 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:31,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 953 transitions. [2022-11-23 14:29:31,220 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 953 transitions. Word has length 89 [2022-11-23 14:29:31,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:31,221 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 953 transitions. [2022-11-23 14:29:31,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:31,221 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 953 transitions. [2022-11-23 14:29:31,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-23 14:29:31,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:31,223 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:29:31,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:29:31,224 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:29:31,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:31,225 INFO L85 PathProgramCache]: Analyzing trace with hash 131061231, now seen corresponding path program 1 times [2022-11-23 14:29:31,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:31,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998845426] [2022-11-23 14:29:31,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:31,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:31,352 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 14:29:31,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:31,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998845426] [2022-11-23 14:29:31,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998845426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:31,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:29:31,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:29:31,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095313163] [2022-11-23 14:29:31,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:31,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:29:31,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:31,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:29:31,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:31,356 INFO L87 Difference]: Start difference. First operand 723 states and 953 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:31,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:31,734 INFO L93 Difference]: Finished difference Result 1765 states and 2386 transitions. [2022-11-23 14:29:31,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:29:31,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-23 14:29:31,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:31,738 INFO L225 Difference]: With dead ends: 1765 [2022-11-23 14:29:31,739 INFO L226 Difference]: Without dead ends: 1043 [2022-11-23 14:29:31,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:31,741 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 97 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:31,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 45 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:29:31,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-11-23 14:29:31,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2022-11-23 14:29:31,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1042 states have (on average 1.2994241842610366) internal successors, (1354), 1042 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:31,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1354 transitions. [2022-11-23 14:29:31,769 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1354 transitions. Word has length 94 [2022-11-23 14:29:31,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:31,770 INFO L495 AbstractCegarLoop]: Abstraction has 1043 states and 1354 transitions. [2022-11-23 14:29:31,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:31,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1354 transitions. [2022-11-23 14:29:31,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-23 14:29:31,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:31,773 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:29:31,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:29:31,774 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:29:31,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:31,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1929388493, now seen corresponding path program 1 times [2022-11-23 14:29:31,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:31,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986407899] [2022-11-23 14:29:31,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:31,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:31,919 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-23 14:29:31,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:31,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986407899] [2022-11-23 14:29:31,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986407899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:31,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:29:31,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:29:31,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505264958] [2022-11-23 14:29:31,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:31,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:29:31,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:31,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:29:31,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:31,923 INFO L87 Difference]: Start difference. First operand 1043 states and 1354 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:32,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:32,290 INFO L93 Difference]: Finished difference Result 1765 states and 2342 transitions. [2022-11-23 14:29:32,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:29:32,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-11-23 14:29:32,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:32,297 INFO L225 Difference]: With dead ends: 1765 [2022-11-23 14:29:32,298 INFO L226 Difference]: Without dead ends: 1763 [2022-11-23 14:29:32,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:32,304 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 54 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:32,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 9 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:29:32,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2022-11-23 14:29:32,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1203. [2022-11-23 14:29:32,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.3635607321131447) internal successors, (1639), 1202 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:32,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1639 transitions. [2022-11-23 14:29:32,347 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1639 transitions. Word has length 110 [2022-11-23 14:29:32,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:32,348 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1639 transitions. [2022-11-23 14:29:32,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:32,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1639 transitions. [2022-11-23 14:29:32,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-23 14:29:32,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:32,352 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 14:29:32,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:29:32,352 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:29:32,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:32,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1360787292, now seen corresponding path program 1 times [2022-11-23 14:29:32,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:32,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324405433] [2022-11-23 14:29:32,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:32,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:32,503 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-23 14:29:32,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:32,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324405433] [2022-11-23 14:29:32,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324405433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:32,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:29:32,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:29:32,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565683409] [2022-11-23 14:29:32,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:32,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:29:32,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:32,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:29:32,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:32,507 INFO L87 Difference]: Start difference. First operand 1203 states and 1639 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:32,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:32,851 INFO L93 Difference]: Finished difference Result 2405 states and 3277 transitions. [2022-11-23 14:29:32,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:29:32,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2022-11-23 14:29:32,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:32,856 INFO L225 Difference]: With dead ends: 2405 [2022-11-23 14:29:32,856 INFO L226 Difference]: Without dead ends: 1203 [2022-11-23 14:29:32,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:32,865 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 79 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:32,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 19 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:29:32,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-11-23 14:29:32,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1123. [2022-11-23 14:29:32,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.3270944741532977) internal successors, (1489), 1122 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:32,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1489 transitions. [2022-11-23 14:29:32,896 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1489 transitions. Word has length 135 [2022-11-23 14:29:32,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:32,896 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1489 transitions. [2022-11-23 14:29:32,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:32,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1489 transitions. [2022-11-23 14:29:32,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-23 14:29:32,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:32,899 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 14:29:32,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:29:32,900 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:29:32,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:32,900 INFO L85 PathProgramCache]: Analyzing trace with hash -396843482, now seen corresponding path program 1 times [2022-11-23 14:29:32,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:32,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968076792] [2022-11-23 14:29:32,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:32,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-23 14:29:33,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:33,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968076792] [2022-11-23 14:29:33,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968076792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:33,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:29:33,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:29:33,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673023730] [2022-11-23 14:29:33,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:33,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:29:33,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:33,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:29:33,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:33,014 INFO L87 Difference]: Start difference. First operand 1123 states and 1489 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:33,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:33,365 INFO L93 Difference]: Finished difference Result 2085 states and 2771 transitions. [2022-11-23 14:29:33,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:29:33,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 139 [2022-11-23 14:29:33,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:33,368 INFO L225 Difference]: With dead ends: 2085 [2022-11-23 14:29:33,369 INFO L226 Difference]: Without dead ends: 963 [2022-11-23 14:29:33,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:33,371 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 70 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:33,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 157 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:29:33,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-11-23 14:29:33,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2022-11-23 14:29:33,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.2661122661122661) internal successors, (1218), 962 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:33,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1218 transitions. [2022-11-23 14:29:33,406 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1218 transitions. Word has length 139 [2022-11-23 14:29:33,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:33,408 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1218 transitions. [2022-11-23 14:29:33,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:33,409 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1218 transitions. [2022-11-23 14:29:33,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-23 14:29:33,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:33,412 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 14:29:33,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:29:33,412 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:29:33,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:33,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1420867654, now seen corresponding path program 1 times [2022-11-23 14:29:33,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:33,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892496083] [2022-11-23 14:29:33,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:33,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:33,541 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-23 14:29:33,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:33,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892496083] [2022-11-23 14:29:33,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892496083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:33,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:29:33,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:29:33,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257103926] [2022-11-23 14:29:33,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:33,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:29:33,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:33,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:29:33,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:33,545 INFO L87 Difference]: Start difference. First operand 963 states and 1218 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:33,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:33,729 INFO L93 Difference]: Finished difference Result 1765 states and 2260 transitions. [2022-11-23 14:29:33,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:29:33,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2022-11-23 14:29:33,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:33,734 INFO L225 Difference]: With dead ends: 1765 [2022-11-23 14:29:33,735 INFO L226 Difference]: Without dead ends: 723 [2022-11-23 14:29:33,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:33,740 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 113 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:33,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 4 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:29:33,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-11-23 14:29:33,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2022-11-23 14:29:33,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.2229916897506925) internal successors, (883), 722 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:33,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 883 transitions. [2022-11-23 14:29:33,758 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 883 transitions. Word has length 149 [2022-11-23 14:29:33,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:33,758 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 883 transitions. [2022-11-23 14:29:33,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:33,759 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 883 transitions. [2022-11-23 14:29:33,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-23 14:29:33,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:33,761 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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 14:29:33,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:29:33,762 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:29:33,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:33,762 INFO L85 PathProgramCache]: Analyzing trace with hash 472512044, now seen corresponding path program 1 times [2022-11-23 14:29:33,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:33,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064336070] [2022-11-23 14:29:33,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:33,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:33,912 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-23 14:29:33,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:33,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064336070] [2022-11-23 14:29:33,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064336070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:33,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:29:33,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:29:33,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580420667] [2022-11-23 14:29:33,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:33,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:29:33,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:33,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:29:33,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:33,914 INFO L87 Difference]: Start difference. First operand 723 states and 883 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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 14:29:34,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:34,251 INFO L93 Difference]: Finished difference Result 1605 states and 2004 transitions. [2022-11-23 14:29:34,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:29:34,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2022-11-23 14:29:34,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:34,256 INFO L225 Difference]: With dead ends: 1605 [2022-11-23 14:29:34,256 INFO L226 Difference]: Without dead ends: 963 [2022-11-23 14:29:34,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:34,257 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 61 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:34,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 110 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:29:34,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-11-23 14:29:34,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2022-11-23 14:29:34,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.2162162162162162) internal successors, (1170), 962 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:34,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1170 transitions. [2022-11-23 14:29:34,283 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1170 transitions. Word has length 178 [2022-11-23 14:29:34,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:34,283 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1170 transitions. [2022-11-23 14:29:34,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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 14:29:34,284 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1170 transitions. [2022-11-23 14:29:34,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-23 14:29:34,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:34,287 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:29:34,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 14:29:34,287 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:29:34,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:34,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1447470293, now seen corresponding path program 1 times [2022-11-23 14:29:34,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:34,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22296891] [2022-11-23 14:29:34,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:34,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:34,735 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:29:34,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:34,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22296891] [2022-11-23 14:29:34,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22296891] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:29:34,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96305728] [2022-11-23 14:29:34,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:34,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:29:34,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:29:34,742 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:29:34,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:29:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:34,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:29:34,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:29:35,126 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-23 14:29:35,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:29:35,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96305728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:35,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:29:35,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-23 14:29:35,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752272937] [2022-11-23 14:29:35,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:35,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:29:35,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:35,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:29:35,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:29:35,130 INFO L87 Difference]: Start difference. First operand 963 states and 1170 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:35,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:35,470 INFO L93 Difference]: Finished difference Result 2165 states and 2686 transitions. [2022-11-23 14:29:35,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:29:35,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2022-11-23 14:29:35,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:35,476 INFO L225 Difference]: With dead ends: 2165 [2022-11-23 14:29:35,476 INFO L226 Difference]: Without dead ends: 1283 [2022-11-23 14:29:35,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:29:35,478 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:35,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 132 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:29:35,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-11-23 14:29:35,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1203. [2022-11-23 14:29:35,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.204658901830283) internal successors, (1448), 1202 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:35,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1448 transitions. [2022-11-23 14:29:35,511 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1448 transitions. Word has length 178 [2022-11-23 14:29:35,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:35,512 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1448 transitions. [2022-11-23 14:29:35,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:35,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1448 transitions. [2022-11-23 14:29:35,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-23 14:29:35,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:35,516 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:29:35,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:29:35,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:29:35,722 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:29:35,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:35,722 INFO L85 PathProgramCache]: Analyzing trace with hash -57926641, now seen corresponding path program 1 times [2022-11-23 14:29:35,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:35,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303621108] [2022-11-23 14:29:35,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:35,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:35,921 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-23 14:29:35,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:35,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303621108] [2022-11-23 14:29:35,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303621108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:35,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:29:35,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:29:35,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785524762] [2022-11-23 14:29:35,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:35,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:29:35,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:35,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:29:35,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:35,924 INFO L87 Difference]: Start difference. First operand 1203 states and 1448 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:36,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:36,253 INFO L93 Difference]: Finished difference Result 2485 states and 2988 transitions. [2022-11-23 14:29:36,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:29:36,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2022-11-23 14:29:36,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:36,257 INFO L225 Difference]: With dead ends: 2485 [2022-11-23 14:29:36,258 INFO L226 Difference]: Without dead ends: 963 [2022-11-23 14:29:36,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:36,260 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 35 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:36,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 132 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:29:36,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-11-23 14:29:36,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2022-11-23 14:29:36,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.104989604989605) internal successors, (1063), 962 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:36,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1063 transitions. [2022-11-23 14:29:36,283 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1063 transitions. Word has length 191 [2022-11-23 14:29:36,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:36,284 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1063 transitions. [2022-11-23 14:29:36,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:36,284 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1063 transitions. [2022-11-23 14:29:36,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-23 14:29:36,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:36,288 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 14:29:36,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 14:29:36,289 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:29:36,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:36,289 INFO L85 PathProgramCache]: Analyzing trace with hash 96896167, now seen corresponding path program 1 times [2022-11-23 14:29:36,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:36,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371487502] [2022-11-23 14:29:36,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:36,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 348 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-23 14:29:36,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:36,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371487502] [2022-11-23 14:29:36,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371487502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:36,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:29:36,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:29:36,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921740586] [2022-11-23 14:29:36,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:36,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:29:36,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:36,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:29:36,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:29:36,659 INFO L87 Difference]: Start difference. First operand 963 states and 1063 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:37,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:37,085 INFO L93 Difference]: Finished difference Result 1845 states and 2042 transitions. [2022-11-23 14:29:37,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:29:37,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 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 249 [2022-11-23 14:29:37,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:37,089 INFO L225 Difference]: With dead ends: 1845 [2022-11-23 14:29:37,090 INFO L226 Difference]: Without dead ends: 963 [2022-11-23 14:29:37,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:29:37,091 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 92 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:37,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 126 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:29:37,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-11-23 14:29:37,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2022-11-23 14:29:37,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.0956340956340955) internal successors, (1054), 962 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:37,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1054 transitions. [2022-11-23 14:29:37,114 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1054 transitions. Word has length 249 [2022-11-23 14:29:37,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:37,115 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1054 transitions. [2022-11-23 14:29:37,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:37,115 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1054 transitions. [2022-11-23 14:29:37,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-11-23 14:29:37,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:37,120 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 14:29:37,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 14:29:37,120 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:29:37,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:37,121 INFO L85 PathProgramCache]: Analyzing trace with hash 2019579956, now seen corresponding path program 1 times [2022-11-23 14:29:37,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:37,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237994464] [2022-11-23 14:29:37,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:37,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:37,429 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 338 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-23 14:29:37,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:37,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237994464] [2022-11-23 14:29:37,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237994464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:37,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:29:37,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:29:37,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096405170] [2022-11-23 14:29:37,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:37,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:29:37,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:37,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:29:37,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:29:37,433 INFO L87 Difference]: Start difference. First operand 963 states and 1054 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:37,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:37,784 INFO L93 Difference]: Finished difference Result 1845 states and 2024 transitions. [2022-11-23 14:29:37,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:29:37,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 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 262 [2022-11-23 14:29:37,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:37,788 INFO L225 Difference]: With dead ends: 1845 [2022-11-23 14:29:37,788 INFO L226 Difference]: Without dead ends: 963 [2022-11-23 14:29:37,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:29:37,790 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 184 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:37,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 115 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:29:37,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-11-23 14:29:37,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 883. [2022-11-23 14:29:37,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.09297052154195) internal successors, (964), 882 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:37,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 964 transitions. [2022-11-23 14:29:37,811 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 964 transitions. Word has length 262 [2022-11-23 14:29:37,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:37,812 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 964 transitions. [2022-11-23 14:29:37,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:37,812 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 964 transitions. [2022-11-23 14:29:37,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-11-23 14:29:37,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:37,817 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:29:37,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 14:29:37,817 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:29:37,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:37,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1593361058, now seen corresponding path program 1 times [2022-11-23 14:29:37,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:37,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832895559] [2022-11-23 14:29:37,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:37,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:38,520 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 273 proven. 94 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-23 14:29:38,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:38,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832895559] [2022-11-23 14:29:38,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832895559] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:29:38,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566994572] [2022-11-23 14:29:38,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:38,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:29:38,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:29:38,523 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:29:38,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:29:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:38,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:29:38,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:29:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-11-23 14:29:38,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:29:38,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566994572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:38,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:29:38,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-23 14:29:38,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82397338] [2022-11-23 14:29:38,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:38,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:29:38,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:38,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:29:38,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:29:38,791 INFO L87 Difference]: Start difference. First operand 883 states and 964 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:39,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:39,052 INFO L93 Difference]: Finished difference Result 1925 states and 2117 transitions. [2022-11-23 14:29:39,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:29:39,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 284 [2022-11-23 14:29:39,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:39,056 INFO L225 Difference]: With dead ends: 1925 [2022-11-23 14:29:39,057 INFO L226 Difference]: Without dead ends: 1043 [2022-11-23 14:29:39,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:29:39,060 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 55 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:39,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 31 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:29:39,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-11-23 14:29:39,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2022-11-23 14:29:39,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1042 states have (on average 1.0681381957773513) internal successors, (1113), 1042 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:39,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1113 transitions. [2022-11-23 14:29:39,088 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1113 transitions. Word has length 284 [2022-11-23 14:29:39,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:39,089 INFO L495 AbstractCegarLoop]: Abstraction has 1043 states and 1113 transitions. [2022-11-23 14:29:39,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:39,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1113 transitions. [2022-11-23 14:29:39,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-11-23 14:29:39,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:39,095 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:29:39,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:29:39,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:29:39,301 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:29:39,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:39,302 INFO L85 PathProgramCache]: Analyzing trace with hash 258659762, now seen corresponding path program 1 times [2022-11-23 14:29:39,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:39,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613222329] [2022-11-23 14:29:39,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:39,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:39,710 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-11-23 14:29:39,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:39,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613222329] [2022-11-23 14:29:39,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613222329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:39,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:29:39,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:29:39,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192188665] [2022-11-23 14:29:39,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:39,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:29:39,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:39,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:29:39,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:39,713 INFO L87 Difference]: Start difference. First operand 1043 states and 1113 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:39,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:39,946 INFO L93 Difference]: Finished difference Result 1763 states and 1882 transitions. [2022-11-23 14:29:39,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:29:39,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 304 [2022-11-23 14:29:39,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:39,947 INFO L225 Difference]: With dead ends: 1763 [2022-11-23 14:29:39,947 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 14:29:39,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:29:39,949 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 60 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:39,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 11 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:29:39,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 14:29:39,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 14:29:39,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:39,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 14:29:39,952 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 304 [2022-11-23 14:29:39,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:39,952 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 14:29:39,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:39,952 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 14:29:39,953 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 14:29:39,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 14:29:39,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 14:29:39,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 14:29:40,759 INFO L899 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2022-11-23 14:29:40,759 INFO L899 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2022-11-23 14:29:40,759 INFO L899 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2022-11-23 14:29:40,760 INFO L899 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2022-11-23 14:29:40,760 INFO L899 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2022-11-23 14:29:40,760 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2022-11-23 14:29:40,760 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2022-11-23 14:29:40,760 INFO L899 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2022-11-23 14:29:40,760 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2022-11-23 14:29:40,760 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2022-11-23 14:29:40,760 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2022-11-23 14:29:40,760 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2022-11-23 14:29:40,760 INFO L899 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2022-11-23 14:29:40,760 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2022-11-23 14:29:40,760 INFO L899 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2022-11-23 14:29:40,761 INFO L899 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2022-11-23 14:29:40,761 INFO L899 garLoopResultBuilder]: For program point L577-1(lines 39 608) no Hoare annotation was computed. [2022-11-23 14:29:40,761 INFO L899 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2022-11-23 14:29:40,761 INFO L899 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2022-11-23 14:29:40,761 INFO L899 garLoopResultBuilder]: For program point L580-1(lines 39 608) no Hoare annotation was computed. [2022-11-23 14:29:40,761 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2022-11-23 14:29:40,761 INFO L899 garLoopResultBuilder]: For program point L581(line 581) no Hoare annotation was computed. [2022-11-23 14:29:40,761 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2022-11-23 14:29:40,761 INFO L899 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2022-11-23 14:29:40,761 INFO L899 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2022-11-23 14:29:40,761 INFO L899 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2022-11-23 14:29:40,762 INFO L899 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2022-11-23 14:29:40,762 INFO L899 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2022-11-23 14:29:40,762 INFO L899 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2022-11-23 14:29:40,762 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 14:29:40,762 INFO L899 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2022-11-23 14:29:40,762 INFO L899 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2022-11-23 14:29:40,762 INFO L899 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2022-11-23 14:29:40,762 INFO L899 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2022-11-23 14:29:40,762 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2022-11-23 14:29:40,762 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2022-11-23 14:29:40,762 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2022-11-23 14:29:40,762 INFO L899 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2022-11-23 14:29:40,763 INFO L899 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2022-11-23 14:29:40,763 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 581) no Hoare annotation was computed. [2022-11-23 14:29:40,763 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2022-11-23 14:29:40,763 INFO L899 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2022-11-23 14:29:40,763 INFO L899 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2022-11-23 14:29:40,763 INFO L899 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2022-11-23 14:29:40,763 INFO L899 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2022-11-23 14:29:40,763 INFO L899 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2022-11-23 14:29:40,763 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2022-11-23 14:29:40,763 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2022-11-23 14:29:40,763 INFO L899 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2022-11-23 14:29:40,763 INFO L899 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2022-11-23 14:29:40,764 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2022-11-23 14:29:40,764 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2022-11-23 14:29:40,764 INFO L899 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2022-11-23 14:29:40,764 INFO L899 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2022-11-23 14:29:40,764 INFO L899 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2022-11-23 14:29:40,764 INFO L899 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2022-11-23 14:29:40,765 INFO L895 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse6 (= ~a25~0 0)) (.cse3 (<= ~a28~0 7)) (.cse0 (= ~a25~0 1)) (.cse8 (<= ~a17~0 7)) (.cse9 (<= ~a19~0 0)) (.cse7 (<= 10 ~a28~0)) (.cse1 (<= 8 ~a17~0)) (.cse2 (<= ~a17~0 8)) (.cse5 (<= ~a28~0 10)) (.cse4 (= ~a19~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse1 .cse2 .cse4) (and (<= 11 ~a28~0) .cse0 .cse2 .cse4) (and .cse2 .cse5 .cse4 .cse6) (and .cse7 .cse8 .cse5 .cse6 .cse9) (and (<= ~a28~0 8) .cse2 .cse6) (and (= ~a25~0 ~a11~0) .cse0 .cse2 .cse4 .cse3) (and .cse7 .cse0 .cse1 .cse2 .cse5) (and (<= 9 ~a28~0) .cse0 .cse8 .cse5 .cse9) (and .cse7 .cse1 .cse2 .cse5 .cse4))) [2022-11-23 14:29:40,765 INFO L899 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2022-11-23 14:29:40,765 INFO L899 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2022-11-23 14:29:40,765 INFO L902 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2022-11-23 14:29:40,765 INFO L899 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2022-11-23 14:29:40,765 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2022-11-23 14:29:40,765 INFO L899 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2022-11-23 14:29:40,765 INFO L899 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2022-11-23 14:29:40,765 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2022-11-23 14:29:40,765 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 14:29:40,765 INFO L899 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2022-11-23 14:29:40,765 INFO L899 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2022-11-23 14:29:40,766 INFO L895 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse6 (= ~a25~0 0)) (.cse3 (<= ~a28~0 7)) (.cse0 (= ~a25~0 1)) (.cse8 (<= ~a17~0 7)) (.cse9 (<= ~a19~0 0)) (.cse7 (<= 10 ~a28~0)) (.cse1 (<= 8 ~a17~0)) (.cse2 (<= ~a17~0 8)) (.cse5 (<= ~a28~0 10)) (.cse4 (= ~a19~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse1 .cse2 .cse4) (and (<= 11 ~a28~0) .cse0 .cse2 .cse4) (and .cse2 .cse5 .cse4 .cse6) (and .cse7 .cse8 .cse5 .cse6 .cse9) (and (<= ~a28~0 8) .cse2 .cse6) (and (= ~a25~0 ~a11~0) .cse0 .cse2 .cse4 .cse3) (and .cse7 .cse0 .cse1 .cse2 .cse5) (and (<= 9 ~a28~0) .cse0 .cse8 .cse5 .cse9) (and .cse7 .cse1 .cse2 .cse5 .cse4))) [2022-11-23 14:29:40,766 INFO L899 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2022-11-23 14:29:40,766 INFO L899 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2022-11-23 14:29:40,766 INFO L899 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2022-11-23 14:29:40,766 INFO L899 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2022-11-23 14:29:40,766 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2022-11-23 14:29:40,768 INFO L899 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2022-11-23 14:29:40,768 INFO L899 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2022-11-23 14:29:40,768 INFO L899 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2022-11-23 14:29:40,768 INFO L899 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2022-11-23 14:29:40,768 INFO L899 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2022-11-23 14:29:40,768 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2022-11-23 14:29:40,769 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2022-11-23 14:29:40,769 INFO L899 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2022-11-23 14:29:40,769 INFO L899 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2022-11-23 14:29:40,769 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2022-11-23 14:29:40,769 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2022-11-23 14:29:40,772 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:29:40,774 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:29:40,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:29:40 BoogieIcfgContainer [2022-11-23 14:29:40,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:29:40,794 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:29:40,794 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:29:40,794 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:29:40,795 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:29:27" (3/4) ... [2022-11-23 14:29:40,797 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 14:29:40,815 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2022-11-23 14:29:40,816 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-11-23 14:29:40,817 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-23 14:29:40,818 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 14:29:41,007 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 14:29:41,008 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:29:41,008 INFO L158 Benchmark]: Toolchain (without parser) took 16025.76ms. Allocated memory was 123.7MB in the beginning and 333.4MB in the end (delta: 209.7MB). Free memory was 57.3MB in the beginning and 138.0MB in the end (delta: -80.7MB). Peak memory consumption was 131.9MB. Max. memory is 16.1GB. [2022-11-23 14:29:41,008 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 123.7MB. Free memory is still 92.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:29:41,009 INFO L158 Benchmark]: CACSL2BoogieTranslator took 628.88ms. Allocated memory was 123.7MB in the beginning and 174.1MB in the end (delta: 50.3MB). Free memory was 57.1MB in the beginning and 132.1MB in the end (delta: -75.0MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. [2022-11-23 14:29:41,009 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.12ms. Allocated memory is still 174.1MB. Free memory was 132.1MB in the beginning and 126.8MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-23 14:29:41,010 INFO L158 Benchmark]: Boogie Preprocessor took 106.02ms. Allocated memory is still 174.1MB. Free memory was 126.8MB in the beginning and 122.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 14:29:41,010 INFO L158 Benchmark]: RCFGBuilder took 1751.13ms. Allocated memory was 174.1MB in the beginning and 230.7MB in the end (delta: 56.6MB). Free memory was 122.6MB in the beginning and 188.5MB in the end (delta: -65.8MB). Peak memory consumption was 63.9MB. Max. memory is 16.1GB. [2022-11-23 14:29:41,010 INFO L158 Benchmark]: TraceAbstraction took 13228.29ms. Allocated memory was 230.7MB in the beginning and 333.4MB in the end (delta: 102.8MB). Free memory was 187.5MB in the beginning and 148.5MB in the end (delta: 39.0MB). Peak memory consumption was 142.8MB. Max. memory is 16.1GB. [2022-11-23 14:29:41,011 INFO L158 Benchmark]: Witness Printer took 214.05ms. Allocated memory is still 333.4MB. Free memory was 148.5MB in the beginning and 138.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 14:29:41,013 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 123.7MB. Free memory is still 92.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 628.88ms. Allocated memory was 123.7MB in the beginning and 174.1MB in the end (delta: 50.3MB). Free memory was 57.1MB in the beginning and 132.1MB in the end (delta: -75.0MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.12ms. Allocated memory is still 174.1MB. Free memory was 132.1MB in the beginning and 126.8MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 106.02ms. Allocated memory is still 174.1MB. Free memory was 126.8MB in the beginning and 122.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1751.13ms. Allocated memory was 174.1MB in the beginning and 230.7MB in the end (delta: 56.6MB). Free memory was 122.6MB in the beginning and 188.5MB in the end (delta: -65.8MB). Peak memory consumption was 63.9MB. Max. memory is 16.1GB. * TraceAbstraction took 13228.29ms. Allocated memory was 230.7MB in the beginning and 333.4MB in the end (delta: 102.8MB). Free memory was 187.5MB in the beginning and 148.5MB in the end (delta: 39.0MB). Peak memory consumption was 142.8MB. Max. memory is 16.1GB. * Witness Printer took 214.05ms. Allocated memory is still 333.4MB. Free memory was 148.5MB in the beginning and 138.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 581]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.1s, OverallIterations: 16, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1088 SdHoareTripleChecker+Valid, 5.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1088 mSDsluCounter, 1295 SdHoareTripleChecker+Invalid, 4.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 102 mSDsCounter, 732 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3806 IncrementalHoareTripleChecker+Invalid, 4538 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 732 mSolverCounterUnsat, 1193 mSDtfsCounter, 3806 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 508 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1203occurred in iteration=6, InterpolantAutomatonStates: 50, 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, 16 MinimizatonAttempts, 800 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 39 NumberOfFragments, 287 HoareAnnotationTreeSize, 3 FomulaSimplifications, 276 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 620 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 3077 NumberOfCodeBlocks, 3077 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 3059 ConstructedInterpolants, 0 QuantifiedInterpolants, 8601 SizeOfPredicates, 0 NumberOfNonLiveVariables, 905 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 18 InterpolantComputations, 16 PerfectInterpolantSequences, 3272/3424 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((((((a25 == 1 && 8 <= a17) && a17 <= 8) && a28 <= 7) || (((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1)) || (((11 <= a28 && a25 == 1) && a17 <= 8) && a19 == 1)) || (((a17 <= 8 && a28 <= 10) && a19 == 1) && a25 == 0)) || ((((10 <= a28 && a17 <= 7) && a28 <= 10) && a25 == 0) && a19 <= 0)) || ((a28 <= 8 && a17 <= 8) && a25 == 0)) || ((((a25 == a11 && a25 == 1) && a17 <= 8) && a19 == 1) && a28 <= 7)) || ((((10 <= a28 && a25 == 1) && 8 <= a17) && a17 <= 8) && a28 <= 10)) || ((((9 <= a28 && a25 == 1) && a17 <= 7) && a28 <= 10) && a19 <= 0)) || ((((10 <= a28 && 8 <= a17) && a17 <= 8) && a28 <= 10) && a19 == 1) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((((((a25 == 1 && 8 <= a17) && a17 <= 8) && a28 <= 7) || (((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1)) || (((11 <= a28 && a25 == 1) && a17 <= 8) && a19 == 1)) || (((a17 <= 8 && a28 <= 10) && a19 == 1) && a25 == 0)) || ((((10 <= a28 && a17 <= 7) && a28 <= 10) && a25 == 0) && a19 <= 0)) || ((a28 <= 8 && a17 <= 8) && a25 == 0)) || ((((a25 == a11 && a25 == 1) && a17 <= 8) && a19 == 1) && a28 <= 7)) || ((((10 <= a28 && a25 == 1) && 8 <= a17) && a17 <= 8) && a28 <= 10)) || ((((9 <= a28 && a25 == 1) && a17 <= 7) && a28 <= 10) && a19 <= 0)) || ((((10 <= a28 && 8 <= a17) && a17 <= 8) && a28 <= 10) && a19 == 1) RESULT: Ultimate proved your program to be correct! [2022-11-23 14:29:41,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142eb78f-5731-4b7f-a1d7-50e6e839f5cc/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