./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9 --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 20f9ce6814caacb533e5bf2143ac3e067387f11238548a0b9b41e2de8e2cc436 --- 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-6b4ec56 [2022-11-20 19:56:46,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:56:46,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:56:46,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:56:46,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:56:46,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:56:46,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:56:46,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:56:46,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:56:46,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:56:46,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:56:46,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:56:46,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:56:46,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:56:46,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:56:46,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:56:46,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:56:46,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:56:46,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:56:46,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:56:46,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:56:46,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:56:46,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:56:46,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:56:46,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:56:46,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:56:46,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:56:46,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:56:46,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:56:46,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:56:46,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:56:46,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:56:46,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:56:46,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:56:46,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:56:46,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:56:46,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:56:46,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:56:46,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:56:46,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:56:46,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:56:46,127 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 19:56:46,165 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:56:46,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:56:46,167 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:56:46,167 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:56:46,168 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:56:46,168 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:56:46,168 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:56:46,169 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:56:46,169 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:56:46,169 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 19:56:46,169 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:56:46,169 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:56:46,170 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 19:56:46,170 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 19:56:46,170 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:56:46,170 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 19:56:46,170 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 19:56:46,171 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 19:56:46,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:56:46,171 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 19:56:46,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 19:56:46,172 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 19:56:46,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:56:46,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:56:46,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:56:46,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:56:46,173 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 19:56:46,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:56:46,173 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:56:46,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:56:46,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:56:46,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:56:46,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:56:46,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:56:46,174 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 19:56:46,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:56:46,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:56:46,175 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 19:56:46,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 19:56:46,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:56:46,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:56:46,176 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_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20f9ce6814caacb533e5bf2143ac3e067387f11238548a0b9b41e2de8e2cc436 [2022-11-20 19:56:46,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:56:46,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:56:46,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:56:46,474 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:56:46,474 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:56:46,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c [2022-11-20 19:56:49,493 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:56:49,694 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:56:49,695 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c [2022-11-20 19:56:49,700 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/data/ef0475e77/4645af3067294a98b8fe8dded1a1a73e/FLAG594153f55 [2022-11-20 19:56:49,714 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/data/ef0475e77/4645af3067294a98b8fe8dded1a1a73e [2022-11-20 19:56:49,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:56:49,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:56:49,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:56:49,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:56:49,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:56:49,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:56:49" (1/1) ... [2022-11-20 19:56:49,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c56b0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:49, skipping insertion in model container [2022-11-20 19:56:49,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:56:49" (1/1) ... [2022-11-20 19:56:49,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:56:49,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:56:49,920 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_5003e226-28b7-4529-9da4-5f0a83a4ab72/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c[489,502] [2022-11-20 19:56:49,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:56:49,979 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 19:56:50,001 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_5003e226-28b7-4529-9da4-5f0a83a4ab72/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c[489,502] [2022-11-20 19:56:50,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:56:50,020 INFO L208 MainTranslator]: Completed translation [2022-11-20 19:56:50,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:50 WrapperNode [2022-11-20 19:56:50,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 19:56:50,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 19:56:50,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 19:56:50,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 19:56:50,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:50" (1/1) ... [2022-11-20 19:56:50,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:50" (1/1) ... [2022-11-20 19:56:50,049 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-11-20 19:56:50,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 19:56:50,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 19:56:50,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 19:56:50,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 19:56:50,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:50" (1/1) ... [2022-11-20 19:56:50,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:50" (1/1) ... [2022-11-20 19:56:50,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:50" (1/1) ... [2022-11-20 19:56:50,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:50" (1/1) ... [2022-11-20 19:56:50,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:50" (1/1) ... [2022-11-20 19:56:50,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:50" (1/1) ... [2022-11-20 19:56:50,068 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:50" (1/1) ... [2022-11-20 19:56:50,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:50" (1/1) ... [2022-11-20 19:56:50,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 19:56:50,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 19:56:50,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 19:56:50,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 19:56:50,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:50" (1/1) ... [2022-11-20 19:56:50,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:56:50,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:56:50,109 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 19:56:50,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 19:56:50,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 19:56:50,152 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 19:56:50,153 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 19:56:50,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 19:56:50,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 19:56:50,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 19:56:50,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 19:56:50,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 19:56:50,229 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 19:56:50,231 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:56:50,470 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:56:50,521 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:56:50,522 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 19:56:50,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:56:50 BoogieIcfgContainer [2022-11-20 19:56:50,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:56:50,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:56:50,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:56:50,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:56:50,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:56:49" (1/3) ... [2022-11-20 19:56:50,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ee6d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:56:50, skipping insertion in model container [2022-11-20 19:56:50,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:50" (2/3) ... [2022-11-20 19:56:50,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ee6d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:56:50, skipping insertion in model container [2022-11-20 19:56:50,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:56:50" (3/3) ... [2022-11-20 19:56:50,549 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound20.c [2022-11-20 19:56:50,584 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:56:50,584 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 19:56:50,635 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:56:50,642 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;@1bfe0c19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:56:50,642 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 19:56:50,652 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-20 19:56:50,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 19:56:50,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:56:50,661 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:56:50,664 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:56:50,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:56:50,672 INFO L85 PathProgramCache]: Analyzing trace with hash -2040384688, now seen corresponding path program 1 times [2022-11-20 19:56:50,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:56:50,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369189676] [2022-11-20 19:56:50,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:56:50,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:56:50,829 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:56:50,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551595851] [2022-11-20 19:56:50,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:56:50,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:56:50,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:56:50,834 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:56:50,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 19:56:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:56:50,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 19:56:50,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:56:51,131 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 19:56:51,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:56:51,343 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 19:56:51,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:56:51,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369189676] [2022-11-20 19:56:51,344 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:56:51,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551595851] [2022-11-20 19:56:51,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551595851] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 19:56:51,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 19:56:51,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-20 19:56:51,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628120341] [2022-11-20 19:56:51,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:56:51,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 19:56:51,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:56:51,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 19:56:51,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-20 19:56:51,387 INFO L87 Difference]: Start difference. First operand has 26 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 19:56:51,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:56:51,505 INFO L93 Difference]: Finished difference Result 49 states and 78 transitions. [2022-11-20 19:56:51,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 19:56:51,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 20 [2022-11-20 19:56:51,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:56:51,522 INFO L225 Difference]: With dead ends: 49 [2022-11-20 19:56:51,522 INFO L226 Difference]: Without dead ends: 30 [2022-11-20 19:56:51,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-20 19:56:51,533 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:56:51,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 102 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2022-11-20 19:56:51,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-20 19:56:51,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-20 19:56:51,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-20 19:56:51,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2022-11-20 19:56:51,574 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 20 [2022-11-20 19:56:51,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:56:51,575 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2022-11-20 19:56:51,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 19:56:51,575 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2022-11-20 19:56:51,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 19:56:51,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:56:51,577 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:56:51,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 19:56:51,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-20 19:56:51,782 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:56:51,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:56:51,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1970941867, now seen corresponding path program 1 times [2022-11-20 19:56:51,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:56:51,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633169319] [2022-11-20 19:56:51,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:56:51,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:56:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:56:51,930 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 19:56:51,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:56:51,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633169319] [2022-11-20 19:56:51,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633169319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:56:51,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:56:51,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:56:51,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009861244] [2022-11-20 19:56:51,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:56:51,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 19:56:51,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:56:51,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 19:56:51,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 19:56:51,934 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 19:56:51,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:56:51,960 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2022-11-20 19:56:51,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 19:56:51,961 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 20 [2022-11-20 19:56:51,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:56:51,962 INFO L225 Difference]: With dead ends: 40 [2022-11-20 19:56:51,963 INFO L226 Difference]: Without dead ends: 30 [2022-11-20 19:56:51,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 19:56:51,965 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:56:51,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 19:56:51,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-20 19:56:51,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-20 19:56:51,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 16 states have internal predecessors, (16), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-20 19:56:51,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2022-11-20 19:56:51,977 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 20 [2022-11-20 19:56:51,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:56:51,978 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2022-11-20 19:56:51,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 19:56:51,978 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2022-11-20 19:56:51,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 19:56:51,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:56:51,979 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:56:51,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 19:56:51,980 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:56:51,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:56:51,981 INFO L85 PathProgramCache]: Analyzing trace with hash -879048764, now seen corresponding path program 1 times [2022-11-20 19:56:51,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:56:51,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070906603] [2022-11-20 19:56:51,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:56:51,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:56:52,000 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:56:52,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906167937] [2022-11-20 19:56:52,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:56:52,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:56:52,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:56:52,003 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:56:52,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 19:56:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:56:52,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 19:56:52,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:56:52,221 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 19:56:52,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:56:52,341 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 19:56:52,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:56:52,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070906603] [2022-11-20 19:56:52,344 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:56:52,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906167937] [2022-11-20 19:56:52,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906167937] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 19:56:52,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 19:56:52,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-20 19:56:52,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503836712] [2022-11-20 19:56:52,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:56:52,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 19:56:52,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:56:52,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 19:56:52,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-20 19:56:52,352 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 19:56:52,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:56:52,461 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2022-11-20 19:56:52,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 19:56:52,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 25 [2022-11-20 19:56:52,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:56:52,466 INFO L225 Difference]: With dead ends: 43 [2022-11-20 19:56:52,466 INFO L226 Difference]: Without dead ends: 41 [2022-11-20 19:56:52,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-20 19:56:52,471 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 5 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:56:52,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 101 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:56:52,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-20 19:56:52,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2022-11-20 19:56:52,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 19:56:52,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2022-11-20 19:56:52,497 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 25 [2022-11-20 19:56:52,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:56:52,498 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2022-11-20 19:56:52,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 19:56:52,498 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2022-11-20 19:56:52,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 19:56:52,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:56:52,499 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:56:52,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 19:56:52,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:56:52,705 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:56:52,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:56:52,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1554903952, now seen corresponding path program 1 times [2022-11-20 19:56:52,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:56:52,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161262017] [2022-11-20 19:56:52,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:56:52,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:56:52,726 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:56:52,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1300677454] [2022-11-20 19:56:52,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:56:52,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:56:52,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:56:52,742 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:56:52,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 19:56:52,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:56:52,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 19:56:52,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:56:53,064 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 19:56:53,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:56:53,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:56:53,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161262017] [2022-11-20 19:56:53,306 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:56:53,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300677454] [2022-11-20 19:56:53,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300677454] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:56:53,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [187947534] [2022-11-20 19:56:53,330 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-20 19:56:53,331 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:56:53,335 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:56:53,340 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:56:53,342 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:56:54,086 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-11-20 19:56:54,098 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-20 19:56:54,119 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:56:55,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [187947534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:56:55,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 19:56:55,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 21 [2022-11-20 19:56:55,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442878284] [2022-11-20 19:56:55,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:56:55,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:56:55,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:56:55,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:56:55,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2022-11-20 19:56:55,422 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-20 19:56:55,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:56:55,723 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2022-11-20 19:56:55,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 19:56:55,724 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2022-11-20 19:56:55,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:56:55,725 INFO L225 Difference]: With dead ends: 47 [2022-11-20 19:56:55,725 INFO L226 Difference]: Without dead ends: 43 [2022-11-20 19:56:55,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 40 SyntacticMatches, 7 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2022-11-20 19:56:55,726 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 25 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:56:55,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 41 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 19:56:55,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-20 19:56:55,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-20 19:56:55,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-20 19:56:55,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2022-11-20 19:56:55,754 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 30 [2022-11-20 19:56:55,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:56:55,755 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2022-11-20 19:56:55,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-20 19:56:55,755 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2022-11-20 19:56:55,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:56:55,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:56:55,756 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:56:55,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 19:56:55,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:56:55,962 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:56:55,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:56:55,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1140127173, now seen corresponding path program 1 times [2022-11-20 19:56:55,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:56:55,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668389470] [2022-11-20 19:56:55,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:56:55,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:56:55,981 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:56:55,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742034727] [2022-11-20 19:56:55,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:56:55,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:56:55,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:56:55,984 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:56:56,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 19:56:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:56:56,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 19:56:56,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:56:56,069 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 19:56:56,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:56:56,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:56:56,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668389470] [2022-11-20 19:56:56,070 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:56:56,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742034727] [2022-11-20 19:56:56,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742034727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:56:56,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:56:56,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 19:56:56,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079429013] [2022-11-20 19:56:56,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:56:56,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 19:56:56,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:56:56,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 19:56:56,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:56:56,073 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 19:56:56,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:56:56,145 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2022-11-20 19:56:56,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:56:56,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 36 [2022-11-20 19:56:56,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:56:56,147 INFO L225 Difference]: With dead ends: 49 [2022-11-20 19:56:56,147 INFO L226 Difference]: Without dead ends: 47 [2022-11-20 19:56:56,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:56:56,148 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 5 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:56:56,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 95 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 19:56:56,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-20 19:56:56,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-20 19:56:56,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-20 19:56:56,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2022-11-20 19:56:56,184 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 36 [2022-11-20 19:56:56,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:56:56,185 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2022-11-20 19:56:56,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 19:56:56,185 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2022-11-20 19:56:56,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-20 19:56:56,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:56:56,189 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:56:56,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 19:56:56,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:56:56,395 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:56:56,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:56:56,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1417905632, now seen corresponding path program 1 times [2022-11-20 19:56:56,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:56:56,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514879349] [2022-11-20 19:56:56,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:56:56,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:56:56,407 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:56:56,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [395639775] [2022-11-20 19:56:56,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:56:56,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:56:56,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:56:56,409 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:56:56,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 19:56:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:56:56,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 19:56:56,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:56:56,730 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 19:56:56,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:56:56,970 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 19:56:56,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:56:56,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514879349] [2022-11-20 19:56:56,972 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:56:56,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395639775] [2022-11-20 19:56:56,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395639775] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:56:56,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [140055754] [2022-11-20 19:56:56,975 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-20 19:56:56,976 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:56:56,976 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:56:56,976 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:56:56,976 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:57:00,159 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-20 19:57:00,164 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-20 19:57:00,179 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:57:01,167 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1430#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 19:57:01,167 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 19:57:01,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 19:57:01,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 12 [2022-11-20 19:57:01,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356183133] [2022-11-20 19:57:01,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 19:57:01,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 19:57:01,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:57:01,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 19:57:01,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2022-11-20 19:57:01,169 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-20 19:57:02,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:57:02,233 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2022-11-20 19:57:02,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:57:02,238 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 37 [2022-11-20 19:57:02,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:57:02,239 INFO L225 Difference]: With dead ends: 62 [2022-11-20 19:57:02,239 INFO L226 Difference]: Without dead ends: 60 [2022-11-20 19:57:02,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2022-11-20 19:57:02,240 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:57:02,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 106 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 19:57:02,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-20 19:57:02,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2022-11-20 19:57:02,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 29 states have internal predecessors, (30), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-20 19:57:02,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2022-11-20 19:57:02,259 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 37 [2022-11-20 19:57:02,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:57:02,259 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2022-11-20 19:57:02,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-20 19:57:02,260 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2022-11-20 19:57:02,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 19:57:02,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:57:02,261 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:57:02,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 19:57:02,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:57:02,467 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:57:02,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:57:02,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1922069073, now seen corresponding path program 1 times [2022-11-20 19:57:02,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:57:02,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370385821] [2022-11-20 19:57:02,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:57:02,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:57:02,479 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:57:02,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1986970358] [2022-11-20 19:57:02,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:57:02,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:57:02,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:57:02,495 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:57:02,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 19:57:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:57:02,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 19:57:02,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:57:02,663 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 19:57:02,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:57:02,820 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 19:57:02,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:57:02,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370385821] [2022-11-20 19:57:02,821 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:57:02,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986970358] [2022-11-20 19:57:02,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986970358] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:57:02,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1963501402] [2022-11-20 19:57:02,823 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-20 19:57:02,823 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:57:02,824 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:57:02,824 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:57:02,824 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:57:03,375 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-11-20 19:57:03,384 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-20 19:57:03,398 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:57:05,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1963501402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:57:05,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 19:57:05,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [9, 8] total 24 [2022-11-20 19:57:05,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676437739] [2022-11-20 19:57:05,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:57:05,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:57:05,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:57:05,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:57:05,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2022-11-20 19:57:05,043 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 14 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-20 19:57:05,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:57:05,408 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2022-11-20 19:57:05,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 19:57:05,408 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 41 [2022-11-20 19:57:05,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:57:05,409 INFO L225 Difference]: With dead ends: 61 [2022-11-20 19:57:05,410 INFO L226 Difference]: Without dead ends: 49 [2022-11-20 19:57:05,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 87 SyntacticMatches, 12 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2022-11-20 19:57:05,411 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:57:05,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 39 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 19:57:05,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-20 19:57:05,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-11-20 19:57:05,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-20 19:57:05,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2022-11-20 19:57:05,428 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 41 [2022-11-20 19:57:05,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:57:05,428 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2022-11-20 19:57:05,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-20 19:57:05,428 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2022-11-20 19:57:05,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 19:57:05,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:57:05,429 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:57:05,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 19:57:05,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 19:57:05,635 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:57:05,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:57:05,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1662237964, now seen corresponding path program 2 times [2022-11-20 19:57:05,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:57:05,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027848882] [2022-11-20 19:57:05,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:57:05,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:57:05,683 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:57:05,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776695151] [2022-11-20 19:57:05,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 19:57:05,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:57:05,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:57:05,685 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:57:05,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 19:57:05,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 19:57:05,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 19:57:05,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 19:57:05,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:57:06,128 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 19:57:06,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:57:06,381 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-20 19:57:06,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:57:06,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027848882] [2022-11-20 19:57:06,382 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:57:06,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776695151] [2022-11-20 19:57:06,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776695151] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:57:06,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1202453286] [2022-11-20 19:57:06,384 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-20 19:57:06,384 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:57:06,385 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:57:06,386 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:57:06,386 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:57:09,242 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-20 19:57:09,246 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-20 19:57:09,259 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:57:10,267 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2301#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 19:57:10,267 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 19:57:10,267 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 19:57:10,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2022-11-20 19:57:10,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538570379] [2022-11-20 19:57:10,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 19:57:10,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:57:10,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:57:10,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:57:10,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2022-11-20 19:57:10,270 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 13 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-20 19:57:11,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:57:11,547 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2022-11-20 19:57:11,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 19:57:11,548 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) Word has length 42 [2022-11-20 19:57:11,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:57:11,549 INFO L225 Difference]: With dead ends: 73 [2022-11-20 19:57:11,549 INFO L226 Difference]: Without dead ends: 71 [2022-11-20 19:57:11,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2022-11-20 19:57:11,550 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 23 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 19:57:11,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 152 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 19:57:11,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-20 19:57:11,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2022-11-20 19:57:11,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 35 states have internal predecessors, (36), 19 states have call successors, (19), 8 states have call predecessors, (19), 8 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-20 19:57:11,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2022-11-20 19:57:11,576 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 42 [2022-11-20 19:57:11,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:57:11,576 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2022-11-20 19:57:11,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-20 19:57:11,577 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2022-11-20 19:57:11,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 19:57:11,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:57:11,578 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:57:11,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-20 19:57:11,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:57:11,783 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:57:11,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:57:11,783 INFO L85 PathProgramCache]: Analyzing trace with hash -335940000, now seen corresponding path program 3 times [2022-11-20 19:57:11,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:57:11,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759163054] [2022-11-20 19:57:11,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:57:11,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:57:11,794 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:57:11,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543469494] [2022-11-20 19:57:11,794 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 19:57:11,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:57:11,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:57:11,795 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:57:11,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 19:57:11,858 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 19:57:11,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 19:57:11,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-20 19:57:11,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:57:12,243 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 19:57:12,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:57:12,587 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 17 proven. 15 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-20 19:57:12,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:57:12,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759163054] [2022-11-20 19:57:12,587 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:57:12,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543469494] [2022-11-20 19:57:12,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543469494] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:57:12,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1210945876] [2022-11-20 19:57:12,590 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-20 19:57:12,590 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:57:12,590 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:57:12,591 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:57:12,591 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:57:15,397 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 40 for LOIs [2022-11-20 19:57:15,446 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-20 19:57:15,459 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:57:16,863 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2818#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 19:57:16,863 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 19:57:16,863 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 19:57:16,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2022-11-20 19:57:16,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138352374] [2022-11-20 19:57:16,864 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 19:57:16,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 19:57:16,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:57:16,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 19:57:16,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2022-11-20 19:57:16,865 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-20 19:57:18,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:57:18,101 INFO L93 Difference]: Finished difference Result 71 states and 85 transitions. [2022-11-20 19:57:18,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 19:57:18,102 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) Word has length 47 [2022-11-20 19:57:18,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:57:18,102 INFO L225 Difference]: With dead ends: 71 [2022-11-20 19:57:18,103 INFO L226 Difference]: Without dead ends: 65 [2022-11-20 19:57:18,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 107 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=146, Invalid=910, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 19:57:18,104 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 19:57:18,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 71 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 19:57:18,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-20 19:57:18,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2022-11-20 19:57:18,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 38 states have internal predecessors, (39), 17 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-20 19:57:18,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2022-11-20 19:57:18,128 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 47 [2022-11-20 19:57:18,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:57:18,128 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2022-11-20 19:57:18,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-20 19:57:18,129 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2022-11-20 19:57:18,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-20 19:57:18,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:57:18,130 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 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] [2022-11-20 19:57:18,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 19:57:18,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:57:18,335 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:57:18,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:57:18,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1514449119, now seen corresponding path program 1 times [2022-11-20 19:57:18,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:57:18,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307011301] [2022-11-20 19:57:18,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:57:18,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:57:18,345 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:57:18,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1231214196] [2022-11-20 19:57:18,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:57:18,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:57:18,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:57:18,347 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:57:18,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 19:57:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:57:18,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 19:57:18,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:57:18,490 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-20 19:57:18,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:57:18,624 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-20 19:57:18,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:57:18,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307011301] [2022-11-20 19:57:18,624 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:57:18,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231214196] [2022-11-20 19:57:18,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231214196] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:57:18,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1463525416] [2022-11-20 19:57:18,627 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-20 19:57:18,627 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:57:18,627 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:57:18,628 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:57:18,628 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:57:20,946 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 23 for LOIs [2022-11-20 19:57:20,973 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-20 19:57:20,986 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:57:22,280 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3397#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 19:57:22,280 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 19:57:22,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 19:57:22,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2022-11-20 19:57:22,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844653527] [2022-11-20 19:57:22,281 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 19:57:22,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 19:57:22,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:57:22,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 19:57:22,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2022-11-20 19:57:22,282 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-20 19:57:22,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:57:22,620 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2022-11-20 19:57:22,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 19:57:22,620 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 58 [2022-11-20 19:57:22,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:57:22,621 INFO L225 Difference]: With dead ends: 69 [2022-11-20 19:57:22,621 INFO L226 Difference]: Without dead ends: 57 [2022-11-20 19:57:22,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 137 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2022-11-20 19:57:22,623 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:57:22,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 116 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 19:57:22,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-20 19:57:22,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-11-20 19:57:22,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 34 states have internal predecessors, (34), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 19:57:22,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2022-11-20 19:57:22,643 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 58 [2022-11-20 19:57:22,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:57:22,643 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2022-11-20 19:57:22,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-20 19:57:22,644 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2022-11-20 19:57:22,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-20 19:57:22,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:57:22,645 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:57:22,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 19:57:22,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 19:57:22,850 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:57:22,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:57:22,851 INFO L85 PathProgramCache]: Analyzing trace with hash 345062644, now seen corresponding path program 4 times [2022-11-20 19:57:22,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:57:22,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450793185] [2022-11-20 19:57:22,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:57:22,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:57:22,862 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:57:22,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180779623] [2022-11-20 19:57:22,872 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 19:57:22,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:57:22,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:57:22,874 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:57:22,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 19:57:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:57:22,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-20 19:57:22,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:57:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 60 proven. 59 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-11-20 19:57:25,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:57:26,256 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 73 proven. 8 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-20 19:57:26,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:57:26,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450793185] [2022-11-20 19:57:26,256 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:57:26,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180779623] [2022-11-20 19:57:26,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180779623] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:57:26,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [911085864] [2022-11-20 19:57:26,259 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-20 19:57:26,259 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:57:26,259 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:57:26,259 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:57:26,259 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:57:28,917 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 40 for LOIs [2022-11-20 19:57:28,965 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-20 19:57:28,979 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:57:30,494 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4066#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 19:57:30,494 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 19:57:30,494 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 19:57:30,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2022-11-20 19:57:30,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880666495] [2022-11-20 19:57:30,495 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 19:57:30,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 19:57:30,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:57:30,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 19:57:30,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2022-11-20 19:57:30,496 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 17 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 8 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) [2022-11-20 19:57:33,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:57:33,917 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2022-11-20 19:57:33,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 19:57:33,918 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 8 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) Word has length 76 [2022-11-20 19:57:33,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:57:33,920 INFO L225 Difference]: With dead ends: 72 [2022-11-20 19:57:33,921 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 19:57:33,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 183 SyntacticMatches, 15 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=166, Invalid=1024, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 19:57:33,926 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 33 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:57:33,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 85 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 19:57:33,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 19:57:33,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 19:57:33,927 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) [2022-11-20 19:57:33,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 19:57:33,927 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2022-11-20 19:57:33,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:57:33,928 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 19:57:33,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 8 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) [2022-11-20 19:57:33,928 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 19:57:33,928 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 19:57:33,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 19:57:33,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 19:57:34,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 19:57:34,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 19:57:48,820 WARN L233 SmtUtils]: Spent 14.50s on a formula simplification. DAG size of input: 128 DAG size of output: 77 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-20 19:58:17,148 WARN L233 SmtUtils]: Spent 14.51s on a formula simplification. DAG size of input: 128 DAG size of output: 77 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-20 19:58:18,644 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse2 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 20)) 1 0) 0)) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (= (select |#valid| 1) 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse2 0) 48) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 20) (= 10 (select |#length| 2)) (= (select .cse2 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-20 19:58:18,644 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 19:58:18,645 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 20)) 1 0) 0)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~x~0#1| 20) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-20 19:58:18,645 INFO L895 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (let ((.cse18 (select |#memory_int| 1))) (let ((.cse0 (= (select |#length| 3) 12)) (.cse1 (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0)))) (.cse2 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse3 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 20)) 1 0) 0))) (.cse4 (= 2 (select |#length| 1))) (.cse5 (= (select |#valid| 3) 1)) (.cse6 (= (select |#valid| 1) 1)) (.cse7 (= (select |#valid| 0) 0)) (.cse8 (= (select |#valid| 2) 1)) (.cse10 (= |#NULL.offset| 0)) (.cse11 (= (select .cse18 0) 48)) (.cse9 (<= |ULTIMATE.start_main_~x~0#1| 20)) (.cse12 (= 10 (select |#length| 2))) (.cse13 (= (select .cse18 1) 0)) (.cse14 (< 0 |#StackHeapBarrier|)) (.cse15 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4 .cse5 (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse6 .cse7 .cse8 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) .cse9) 1 0) 0)) .cse10 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse11 .cse12 .cse13 (= |ULTIMATE.start_main_~s~0#1| 1) .cse14 .cse15) (let ((.cse16 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse17 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (and .cse0 .cse1 .cse2 .cse3 (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) .cse4 (= (+ .cse16 .cse17) |ULTIMATE.start_main_~b~0#1|) .cse5 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (+ |ULTIMATE.start_main_~a~0#1| .cse16 .cse17)) .cse6 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) .cse7 .cse8 .cse10 .cse11 .cse9 .cse12 .cse13 .cse14 .cse15))))) [2022-11-20 19:58:18,646 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse2 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 20)) 1 0) 0)) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (= (select |#valid| 1) 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse2 0) 48) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 20) (= 10 (select |#length| 2)) (= (select .cse2 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-20 19:58:18,646 INFO L899 garLoopResultBuilder]: For program point L38(lines 35 52) no Hoare annotation was computed. [2022-11-20 19:58:18,646 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 20)) 1 0) 0)) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 20) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-20 19:58:18,646 INFO L895 garLoopResultBuilder]: At program point L36-1(line 36) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 20)) 1 0) 0)) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 20) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-20 19:58:18,647 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 19:58:18,647 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-11-20 19:58:18,647 INFO L902 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: true [2022-11-20 19:58:18,647 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)) (= (select |#valid| 2) 1) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 20)) 1 0) 0)) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-20 19:58:18,647 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 20)) 1 0) 0)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 20)) 1 0) 0)) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-20 19:58:18,648 INFO L895 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse18 (select |#memory_int| 1))) (let ((.cse0 (= (select |#length| 3) 12)) (.cse1 (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0)))) (.cse2 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse3 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 20)) 1 0) 0))) (.cse4 (= 2 (select |#length| 1))) (.cse5 (= (select |#valid| 3) 1)) (.cse6 (= (select |#valid| 1) 1)) (.cse7 (= (select |#valid| 0) 0)) (.cse8 (= (select |#valid| 2) 1)) (.cse10 (= |#NULL.offset| 0)) (.cse11 (= (select .cse18 0) 48)) (.cse9 (<= |ULTIMATE.start_main_~x~0#1| 20)) (.cse12 (= 10 (select |#length| 2))) (.cse13 (= (select .cse18 1) 0)) (.cse14 (< 0 |#StackHeapBarrier|)) (.cse15 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4 .cse5 (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse6 .cse7 .cse8 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) .cse9) 1 0) 0)) .cse10 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse11 .cse12 .cse13 (= |ULTIMATE.start_main_~s~0#1| 1) .cse14 .cse15) (let ((.cse16 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse17 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (and .cse0 .cse1 .cse2 .cse3 (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) .cse4 (= (+ .cse16 .cse17) |ULTIMATE.start_main_~b~0#1|) .cse5 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (+ |ULTIMATE.start_main_~a~0#1| .cse16 .cse17)) .cse6 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) .cse7 .cse8 .cse10 .cse11 .cse9 .cse12 .cse13 .cse14 .cse15))))) [2022-11-20 19:58:18,648 INFO L895 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-20 19:58:18,648 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-11-20 19:58:18,649 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 20)) 1 0) 0)) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 20) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-20 19:58:18,649 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 20)) 1 0) 0)) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 20) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-20 19:58:18,649 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-11-20 19:58:18,649 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-11-20 19:58:18,649 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-11-20 19:58:18,650 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-11-20 19:58:18,650 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-11-20 19:58:18,650 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-11-20 19:58:18,650 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-11-20 19:58:18,651 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-11-20 19:58:18,654 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:58:18,656 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 19:58:18,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:58:18 BoogieIcfgContainer [2022-11-20 19:58:18,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 19:58:18,673 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 19:58:18,673 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 19:58:18,674 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 19:58:18,674 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:56:50" (3/4) ... [2022-11-20 19:58:18,677 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 19:58:18,683 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-20 19:58:18,683 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-20 19:58:18,686 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-20 19:58:18,687 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-20 19:58:18,687 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 19:58:18,687 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 19:58:18,730 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 19:58:18,731 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 19:58:18,731 INFO L158 Benchmark]: Toolchain (without parser) took 89013.79ms. Allocated memory was 182.5MB in the beginning and 553.6MB in the end (delta: 371.2MB). Free memory was 140.5MB in the beginning and 449.6MB in the end (delta: -309.1MB). Peak memory consumption was 63.5MB. Max. memory is 16.1GB. [2022-11-20 19:58:18,732 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 132.1MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:58:18,733 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.57ms. Allocated memory is still 182.5MB. Free memory was 140.5MB in the beginning and 130.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 19:58:18,733 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.63ms. Allocated memory is still 182.5MB. Free memory was 130.0MB in the beginning and 128.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 19:58:18,733 INFO L158 Benchmark]: Boogie Preprocessor took 20.47ms. Allocated memory is still 182.5MB. Free memory was 128.6MB in the beginning and 127.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:58:18,734 INFO L158 Benchmark]: RCFGBuilder took 469.14ms. Allocated memory is still 182.5MB. Free memory was 127.3MB in the beginning and 114.0MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 19:58:18,734 INFO L158 Benchmark]: TraceAbstraction took 88130.00ms. Allocated memory was 182.5MB in the beginning and 553.6MB in the end (delta: 371.2MB). Free memory was 113.3MB in the beginning and 452.8MB in the end (delta: -339.5MB). Peak memory consumption was 296.3MB. Max. memory is 16.1GB. [2022-11-20 19:58:18,734 INFO L158 Benchmark]: Witness Printer took 57.47ms. Allocated memory is still 553.6MB. Free memory was 452.8MB in the beginning and 449.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 19:58:18,740 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 132.1MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 301.57ms. Allocated memory is still 182.5MB. Free memory was 140.5MB in the beginning and 130.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.63ms. Allocated memory is still 182.5MB. Free memory was 130.0MB in the beginning and 128.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.47ms. Allocated memory is still 182.5MB. Free memory was 128.6MB in the beginning and 127.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 469.14ms. Allocated memory is still 182.5MB. Free memory was 127.3MB in the beginning and 114.0MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 88130.00ms. Allocated memory was 182.5MB in the beginning and 553.6MB in the end (delta: 371.2MB). Free memory was 113.3MB in the beginning and 452.8MB in the end (delta: -339.5MB). Peak memory consumption was 296.3MB. Max. memory is 16.1GB. * Witness Printer took 57.47ms. Allocated memory is still 553.6MB. Free memory was 452.8MB in the beginning and 449.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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: 13]: 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 3 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 88.0s, OverallIterations: 11, TraceHistogramMax: 11, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 44.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 236 SdHoareTripleChecker+Valid, 5.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 185 mSDsluCounter, 938 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 16 IncrementalHoareTripleChecker+Unchecked, 661 mSDsCounter, 249 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1851 IncrementalHoareTripleChecker+Invalid, 2116 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 249 mSolverCounterUnsat, 277 mSDtfsCounter, 1851 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1106 GetRequests, 841 SyntacticMatches, 56 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2349 ImplicationChecksByTransitivity, 13.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=9, InterpolantAutomatonStates: 102, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 27 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 53 PreInvPairs, 84 NumberOfFragments, 1513 HoareAnnotationTreeSize, 53 FomulaSimplifications, 80 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 15 FomulaSimplificationsInter, 19440 FormulaSimplificationTreeSizeReductionInter, 44.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 432 NumberOfCodeBlocks, 411 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 759 ConstructedInterpolants, 2 QuantifiedInterpolants, 4176 SizeOfPredicates, 54 NumberOfNonLiveVariables, 1153 ConjunctsInSsa, 247 ConjunctsInUnsatCore, 19 InterpolantComputations, 4 PerfectInterpolantSequences, 1040/1194 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: OVERALL_TIME: 1.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 49, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 27, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 44, TOOLS_POST_CALL_TIME: 0.6s, TOOLS_POST_RETURN_APPLICATIONS: 28, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 99, TOOLS_QUANTIFIERELIM_TIME: 0.8s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 122, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 54, DOMAIN_JOIN_TIME: 0.4s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 49, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 28, CALL_SUMMARIZER_CACHE_MISSES: 4, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 564, DAG_COMPRESSION_RETAINED_NODES: 130, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((((((((((unknown-#length-unknown[3] == 12 && !((if 0 <= y && y <= 20 then 1 else 0) == 0)) && p * s == q * r + 1) && 1 <= y) && 2 == unknown-#length-unknown[1]) && s * y + q * x == b) && \valid[3] == 1) && 1 <= x) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && x <= 20) && 10 == unknown-#length-unknown[2]) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-20 19:58:18,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5003e226-28b7-4529-9da4-5f0a83a4ab72/bin/utaipan-6cKwYrpEi9/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