./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_2+newton_2_8.i --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_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/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_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_2_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/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_6ec2e4dc-d180-420b-b737-13e11ec91b70/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 3c398287975b44a672accc5dcc25b28e536e19f2a0478c0e2a0b4b73bd7a8e18 --- 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 20:58:57,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:58:57,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:58:57,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:58:57,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:58:57,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:58:57,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:58:57,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:58:57,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:58:58,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:58:58,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:58:58,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:58:58,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:58:58,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:58:58,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:58:58,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:58:58,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:58:58,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:58:58,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:58:58,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:58:58,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:58:58,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:58:58,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:58:58,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:58:58,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:58:58,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:58:58,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:58:58,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:58:58,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:58:58,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:58:58,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:58:58,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:58:58,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:58:58,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:58:58,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:58:58,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:58:58,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:58:58,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:58:58,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:58:58,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:58:58,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:58:58,082 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:58:58,127 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:58:58,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:58:58,128 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:58:58,128 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:58:58,129 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:58:58,129 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:58:58,129 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:58:58,130 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:58:58,130 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:58:58,130 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:58:58,130 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:58:58,130 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:58:58,131 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:58:58,131 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:58:58,131 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:58:58,131 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:58:58,131 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:58:58,132 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:58:58,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:58:58,133 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:58:58,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:58:58,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:58:58,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:58:58,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:58:58,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:58:58,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:58:58,136 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:58:58,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:58:58,137 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:58:58,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:58:58,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:58:58,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:58:58,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:58:58,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:58:58,138 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:58:58,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:58:58,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:58:58,140 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:58:58,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:58:58,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:58:58,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:58:58,141 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_6ec2e4dc-d180-420b-b737-13e11ec91b70/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c398287975b44a672accc5dcc25b28e536e19f2a0478c0e2a0b4b73bd7a8e18 [2022-11-20 20:58:58,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:58:58,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:58:58,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:58:58,544 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:58:58,544 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:58:58,546 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/combinations/gcd_2+newton_2_8.i [2022-11-20 20:59:01,669 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:59:01,973 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:59:01,973 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/sv-benchmarks/c/combinations/gcd_2+newton_2_8.i [2022-11-20 20:59:01,981 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/data/cf9993b10/b9a83ec7486b42e2be14d894bce93a8d/FLAG32a9fbd10 [2022-11-20 20:59:01,997 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/data/cf9993b10/b9a83ec7486b42e2be14d894bce93a8d [2022-11-20 20:59:02,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:59:02,001 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:59:02,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:59:02,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:59:02,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:59:02,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:59:01" (1/1) ... [2022-11-20 20:59:02,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c33c3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:02, skipping insertion in model container [2022-11-20 20:59:02,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:59:01" (1/1) ... [2022-11-20 20:59:02,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:59:02,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:59:02,223 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_6ec2e4dc-d180-420b-b737-13e11ec91b70/sv-benchmarks/c/combinations/gcd_2+newton_2_8.i[1226,1239] [2022-11-20 20:59:02,248 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_6ec2e4dc-d180-420b-b737-13e11ec91b70/sv-benchmarks/c/combinations/gcd_2+newton_2_8.i[2841,2854] [2022-11-20 20:59:02,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:59:02,263 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:59:02,278 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_6ec2e4dc-d180-420b-b737-13e11ec91b70/sv-benchmarks/c/combinations/gcd_2+newton_2_8.i[1226,1239] [2022-11-20 20:59:02,290 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_6ec2e4dc-d180-420b-b737-13e11ec91b70/sv-benchmarks/c/combinations/gcd_2+newton_2_8.i[2841,2854] [2022-11-20 20:59:02,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:59:02,307 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:59:02,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:02 WrapperNode [2022-11-20 20:59:02,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:59:02,309 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:59:02,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:59:02,309 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:59:02,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:02" (1/1) ... [2022-11-20 20:59:02,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:02" (1/1) ... [2022-11-20 20:59:02,354 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2022-11-20 20:59:02,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:59:02,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:59:02,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:59:02,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:59:02,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:02" (1/1) ... [2022-11-20 20:59:02,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:02" (1/1) ... [2022-11-20 20:59:02,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:02" (1/1) ... [2022-11-20 20:59:02,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:02" (1/1) ... [2022-11-20 20:59:02,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:02" (1/1) ... [2022-11-20 20:59:02,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:02" (1/1) ... [2022-11-20 20:59:02,399 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:02" (1/1) ... [2022-11-20 20:59:02,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:02" (1/1) ... [2022-11-20 20:59:02,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:59:02,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:59:02,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:59:02,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:59:02,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:02" (1/1) ... [2022-11-20 20:59:02,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:59:02,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:59:02,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:59:02,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:59:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:59:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-20 20:59:02,487 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-20 20:59:02,488 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-20 20:59:02,488 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-20 20:59:02,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:59:02,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:59:02,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:59:02,585 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:59:02,588 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:59:02,916 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:59:03,069 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:59:03,084 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:59:03,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:59:03 BoogieIcfgContainer [2022-11-20 20:59:03,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:59:03,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:59:03,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:59:03,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:59:03,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:59:01" (1/3) ... [2022-11-20 20:59:03,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150d5aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:59:03, skipping insertion in model container [2022-11-20 20:59:03,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:59:02" (2/3) ... [2022-11-20 20:59:03,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150d5aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:59:03, skipping insertion in model container [2022-11-20 20:59:03,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:59:03" (3/3) ... [2022-11-20 20:59:03,099 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_2_8.i [2022-11-20 20:59:03,125 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:59:03,125 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 20:59:03,216 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:59:03,226 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;@7047890c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:59:03,226 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 20:59:03,231 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 20:59:03,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 20:59:03,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:59:03,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 20:59:03,241 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:59:03,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:59:03,250 INFO L85 PathProgramCache]: Analyzing trace with hash -499021812, now seen corresponding path program 1 times [2022-11-20 20:59:03,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:59:03,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246364817] [2022-11-20 20:59:03,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:59:03,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:59:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:59:03,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:59:03,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:59:03,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246364817] [2022-11-20 20:59:03,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246364817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:59:03,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:59:03,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:59:03,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416095864] [2022-11-20 20:59:03,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:59:03,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:59:03,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:59:03,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:59:03,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:59:03,815 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 20:59:03,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:59:03,944 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2022-11-20 20:59:03,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:59:03,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 20:59:03,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:59:03,957 INFO L225 Difference]: With dead ends: 38 [2022-11-20 20:59:03,958 INFO L226 Difference]: Without dead ends: 21 [2022-11-20 20:59:03,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:59:03,971 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:59:03,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 35 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:59:03,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-20 20:59:04,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-20 20:59:04,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 20:59:04,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-11-20 20:59:04,021 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 6 [2022-11-20 20:59:04,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:59:04,022 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-11-20 20:59:04,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 20:59:04,023 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-11-20 20:59:04,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 20:59:04,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:59:04,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:59:04,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:59:04,026 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:59:04,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:59:04,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1643785969, now seen corresponding path program 1 times [2022-11-20 20:59:04,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:59:04,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772592152] [2022-11-20 20:59:04,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:59:04,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:59:04,044 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:59:04,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1625045858] [2022-11-20 20:59:04,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:59:04,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:59:04,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:59:04,049 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:59:04,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:59:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:59:04,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 20:59:04,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:59:04,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:59:04,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:59:04,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:59:04,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:59:04,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772592152] [2022-11-20 20:59:04,782 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:59:04,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625045858] [2022-11-20 20:59:04,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625045858] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:59:04,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [646415363] [2022-11-20 20:59:04,806 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-20 20:59:04,807 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:59:04,812 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:59:04,822 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:59:04,824 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:59:05,127 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:59:05,554 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '160#(and (= |ULTIMATE.start_gcd_test_~b#1| 0) (<= 0 (+ |ULTIMATE.start_gcd_test_#in~b#1| 128)) (<= |ULTIMATE.start_gcd_test_#in~a#1| 127) (<= |ULTIMATE.start_main1_~x~0#1| 127) (<= |ULTIMATE.start_gcd_test_#in~b#1| 127) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (< 0 |ULTIMATE.start_main1_~y~0#1|) (<= 0 (+ |ULTIMATE.start_gcd_test_#in~a#1| 128)) (= (ite (<= |ULTIMATE.start_main1_~g~0#1| |ULTIMATE.start_main1_~y~0#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 (+ |ULTIMATE.start_main1_~x~0#1| 128)) (<= |ULTIMATE.start_gcd_test_#res#1| 127) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main1_~g~0#1| |ULTIMATE.start_gcd_test_#res#1|) (= |ULTIMATE.start_gcd_test_~a#1| |ULTIMATE.start_gcd_test_#res#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 20:59:05,554 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:59:05,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:59:05,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-20 20:59:05,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777730814] [2022-11-20 20:59:05,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 20:59:05,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 20:59:05,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:59:05,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 20:59:05,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:59:05,558 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 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 20:59:05,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:59:05,841 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-11-20 20:59:05,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 20:59:05,842 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 20:59:05,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:59:05,843 INFO L225 Difference]: With dead ends: 28 [2022-11-20 20:59:05,843 INFO L226 Difference]: Without dead ends: 23 [2022-11-20 20:59:05,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-11-20 20:59:05,846 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:59:05,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 96 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:59:05,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-20 20:59:05,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-20 20:59:05,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 20:59:05,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-11-20 20:59:05,863 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 7 [2022-11-20 20:59:05,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:59:05,863 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-11-20 20:59:05,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 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 20:59:05,864 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-11-20 20:59:05,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 20:59:05,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:59:05,865 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-20 20:59:05,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:59:06,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:59:06,071 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:59:06,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:59:06,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1300293201, now seen corresponding path program 2 times [2022-11-20 20:59:06,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:59:06,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808312249] [2022-11-20 20:59:06,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:59:06,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:59:06,084 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:59:06,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [364649672] [2022-11-20 20:59:06,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:59:06,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:59:06,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:59:06,086 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:59:06,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:59:06,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 20:59:06,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:59:06,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-20 20:59:06,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:59:14,179 WARN L837 $PredicateComparison]: unable to prove that (and (let ((.cse20 (* |c_ULTIMATE.start_gcd_test_~a#1| 255)) (.cse6 (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (.cse11 (+ |c_ULTIMATE.start_gcd_test_~b#1| 256))) (let ((.cse17 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse73 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse74 (mod .cse73 256))) (and (not (<= (mod (+ .cse73 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127)) (= .cse11 .cse74) (not (<= .cse74 127)) (not (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0))))))) (.cse31 (not .cse6)) (.cse24 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse72 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse71 (mod .cse72 256))) (and (= .cse11 .cse71) (not (<= .cse71 127)) (not (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)) (not (<= (mod (+ .cse72 .cse20) 256) 127))))))) (.cse53 (< |c_ULTIMATE.start_main1_~y~0#1| 0)) (.cse3 (+ |c_ULTIMATE.start_gcd_test_~a#1| 256)) (.cse2 (* |c_ULTIMATE.start_main1_~y~0#1| 255))) (or (and (let ((.cse4 (mod .cse2 256))) (let ((.cse5 (<= .cse4 127))) (or (and (let ((.cse0 (+ .cse4 (- 256)))) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse0) 256)) (not (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse1 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse0))) (and (not (= .cse1 0)) (= (mod (+ .cse1 .cse2) 256) .cse3) (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)))))) (not .cse5) (or (and .cse6 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse8 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse7 (mod .cse8 256))) (and (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse7) (<= (mod (+ .cse8 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127) (<= .cse7 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse9 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse9 256)) (= .cse9 0) (<= (mod (+ .cse9 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse10 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= (mod (+ .cse10 |c_ULTIMATE.start_gcd_test_~a#1|) 256) .cse11) (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (not (= .cse10 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0) (<= (mod .cse10 256) 127)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse12 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (not (<= (mod (+ .cse12 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127)) (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse12 256)) (= .cse12 0)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse13 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse14 (mod .cse13 256))) (and (not (<= (mod (+ .cse13 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127)) (not (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse14) (<= .cse14 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse16 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse15 (mod .cse16 256))) (and (= .cse11 .cse15) (not (<= .cse15 127)) (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (<= (mod (+ .cse16 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127))))) .cse17 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse18 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (not (<= (mod .cse18 256) 127)) (= (mod (+ .cse18 |c_ULTIMATE.start_gcd_test_~a#1|) 256) .cse11) (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)))))) (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse19 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (<= (mod (+ .cse19 .cse20) 256) 127) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse19 256)) (= .cse19 0)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse22 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse21 (mod .cse22 256))) (and (= .cse11 .cse21) (not (<= .cse21 127)) (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (<= (mod (+ .cse22 .cse20) 256) 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse23 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse23 256)) (= .cse23 0) (not (<= (mod (+ .cse23 .cse20) 256) 127))))) .cse24 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse25 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (= (mod (+ .cse25 .cse20) 256) .cse11) (not (= .cse25 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0) (<= (mod .cse25 256) 127)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse26 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (not (<= (mod .cse26 256) 127)) (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (= (mod (+ .cse26 .cse20) 256) .cse11) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse28 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse27 (mod .cse28 256))) (and (not (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse27) (not (<= (mod (+ .cse28 .cse20) 256) 127)) (<= .cse27 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse29 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse30 (mod .cse29 256))) (and (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (<= (mod (+ .cse29 .cse20) 256) 127) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse30) (<= .cse30 127)))))) .cse31))) (and (not (= .cse4 0)) (or (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse32 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse32 256)) (= .cse32 0) (not (<= (mod (+ .cse32 .cse20) 256) 127)) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse33 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= (mod (+ .cse33 .cse20) 256) 127) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse33 256)) (= .cse33 0) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse35 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse34 (mod .cse35 256))) (and (= .cse11 .cse34) (not (<= .cse34 127)) (not (<= (mod (+ .cse35 .cse20) 256) 127)) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse36 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse37 (mod .cse36 256))) (and (<= (mod (+ .cse36 .cse20) 256) 127) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse37) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|) (<= .cse37 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse39 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse38 (mod .cse39 256))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| .cse38) (not (<= (mod (+ .cse39 .cse20) 256) 127)) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|) (<= .cse38 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse41 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse40 (mod .cse41 256))) (and (= .cse11 .cse40) (not (<= .cse40 127)) (<= (mod (+ .cse41 .cse20) 256) 127) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|)))))) .cse31) (and .cse6 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse43 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse42 (mod .cse43 256))) (and (= .cse11 .cse42) (not (<= .cse42 127)) (<= (mod (+ .cse43 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse44 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (not (<= (mod (+ .cse44 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse44 256)) (= .cse44 0) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse46 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse45 (mod .cse46 256))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| .cse45) (<= (mod (+ .cse46 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|) (<= .cse45 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse47 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse48 (mod .cse47 256))) (and (not (<= (mod (+ .cse47 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127)) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse48) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|) (<= .cse48 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse49 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse50 (mod .cse49 256))) (and (not (<= (mod (+ .cse49 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127)) (= .cse11 .cse50) (not (<= .cse50 127)) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse51 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse51 256)) (= .cse51 0) (<= (mod (+ .cse51 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|))))))) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (and (not (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse4) 256)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse52 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse4))) (and (= .cse3 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse52) 256)) (not (= .cse52 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0))))) .cse5)))) .cse53) (and (or (and .cse6 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse55 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse54 (mod .cse55 256))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| .cse54) (<= (mod (+ .cse55 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|) (<= .cse54 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse57 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse56 (mod .cse57 256))) (and (= .cse11 .cse56) (not (<= .cse56 127)) (not (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)) (<= (mod (+ .cse57 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse58 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse59 (mod .cse58 256))) (and (not (<= (mod (+ .cse58 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127)) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse59) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|) (<= .cse59 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse60 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (not (<= (mod (+ .cse60 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse60 256)) (= .cse60 0) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|)))) .cse17 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse61 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse61 256)) (= .cse61 0) (<= (mod (+ .cse61 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|)))))) (and .cse31 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse62 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= (mod (+ .cse62 .cse20) 256) 127) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse62 256)) (= .cse62 0) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse64 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse63 (mod .cse64 256))) (and (= .cse11 .cse63) (not (<= .cse63 127)) (not (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)) (<= (mod (+ .cse64 .cse20) 256) 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse65 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse66 (mod .cse65 256))) (and (<= (mod (+ .cse65 .cse20) 256) 127) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse66) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|) (<= .cse66 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse68 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse67 (mod .cse68 256))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| .cse67) (not (<= (mod (+ .cse68 .cse20) 256) 127)) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|) (<= .cse67 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse69 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse69 256)) (= .cse69 0) (not (<= (mod (+ .cse69 .cse20) 256) 127)) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|)))) .cse24))) (not (= |c_ULTIMATE.start_main1_~y~0#1| 0)) (not .cse53) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse70 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_main1_~y~0#1|))) (and (= .cse3 (mod (+ .cse70 .cse2) 256)) (not (= .cse70 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (and (not (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_main1_~y~0#1|) 256))))))))) (<= |c_ULTIMATE.start_main1_~y~0#1| 127) (not (= |c_ULTIMATE.start_gcd_test_~a#1| 0))) is different from false [2022-11-20 21:00:06,966 WARN L837 $PredicateComparison]: unable to prove that (and (let ((.cse10 (* |c_ULTIMATE.start_main1_~y~0#1| 255))) (let ((.cse6 (mod .cse10 256))) (let ((.cse24 (<= .cse6 127)) (.cse13 (< |c_ULTIMATE.start_main1_~y~0#1| 0)) (.cse0 (< |c_ULTIMATE.start_gcd_test_~a#1| 0))) (let ((.cse16 (+ |c_ULTIMATE.start_gcd_test_~b#1| 256)) (.cse26 (not .cse0)) (.cse23 (not (= .cse6 0))) (.cse19 (not (= |c_ULTIMATE.start_main1_~y~0#1| 0))) (.cse20 (not .cse13)) (.cse3 (+ |c_ULTIMATE.start_gcd_test_~a#1| 256)) (.cse7 (+ .cse6 (- 256))) (.cse14 (not .cse24))) (or (and .cse0 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse4 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse7))) (let ((.cse2 (mod .cse4 256))) (let ((.cse1 (mod .cse2 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= .cse1 0) (not (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse1 256)) (not (= .cse2 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse5 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse2))) (and (= .cse3 (mod (+ (* .cse4 255) .cse5) 256)) (not (= .cse5 0)) (<= .cse6 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0))))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse9 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse7))) (let ((.cse11 (+ (mod (+ .cse9 .cse10) 256) (- 256)))) (let ((.cse12 (mod .cse11 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse8 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse11))) (and (not (= .cse8 0)) (<= .cse6 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (= .cse3 (mod (+ .cse9 .cse10 .cse8) 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)))) (= (mod .cse12 256) |c_ULTIMATE.start_gcd_test_~b#1|) (not (= .cse9 0)) (= .cse12 0) (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0))))))) .cse13 .cse14) (and .cse0 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse17 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse7))) (let ((.cse18 (+ (mod (+ .cse17 .cse10) 256) (- 256)))) (let ((.cse15 (mod .cse18 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= (mod (+ .cse15 |c_ULTIMATE.start_gcd_test_~a#1|) 256) .cse16) (not (= .cse17 0)) (not (= .cse15 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (and (<= .cse6 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (= .cse3 (mod (+ .cse17 .cse10 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse18)) 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0))) (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)))))) .cse13 .cse14) (and (or (and .cse19 .cse20 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse21 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_main1_~y~0#1|) 256))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse21) 256) |c_ULTIMATE.start_gcd_test_~a#1|) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|))) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse21 |c_ULTIMATE.start_gcd_test_~a#1|) 256)) (not (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)) (not (= .cse21 0)))))) (and (or (and .cse14 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse22 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse7) 256))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse22) 256)) (not (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)))) (not (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse22 |c_ULTIMATE.start_gcd_test_~a#1|) 256)) (not (= .cse22 0)))))) (and .cse23 .cse24 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int) (|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse25 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse6) 256))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse25) 256)) (= (mod (mod .cse25 |c_ULTIMATE.start_gcd_test_~a#1|) 256) |c_ULTIMATE.start_gcd_test_~b#1|) (not (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)) (not (= .cse25 0)) (<= .cse6 |v_ULTIMATE.start_gcd_test_~a#1_26|)))))) .cse13)) .cse26) (and (let ((.cse28 (* |c_ULTIMATE.start_gcd_test_~a#1| 255))) (or (and (or (and .cse23 .cse24 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse30 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse6))) (let ((.cse31 (+ (- 256) (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse30) 256)))) (let ((.cse27 (mod .cse31 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= (mod (+ .cse27 .cse28) 256) .cse16) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse29 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse31))) (and (= (mod .cse29 256) |c_ULTIMATE.start_gcd_test_~a#1|) (not (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse29 .cse30) 256) 127)) (<= .cse6 |v_ULTIMATE.start_gcd_test_~a#1_26|)))) (not (= .cse27 0)) (not (= .cse30 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0))))))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse33 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse7))) (let ((.cse34 (+ (mod (+ .cse33 .cse10) 256) (- 256)))) (let ((.cse32 (mod .cse34 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= .cse16 (mod (+ .cse32 .cse28) 256)) (not (= .cse33 0)) (not (= .cse32 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (and (not (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)) (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse34) 256) |c_ULTIMATE.start_gcd_test_~a#1|))) (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)))))) .cse14)) .cse13) (and .cse19 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse36 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse37 (+ (- 256) (mod (+ .cse36 .cse10) 256)))) (let ((.cse35 (mod .cse37 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= .cse16 (mod (+ .cse28 .cse35) 256)) (not (= .cse35 0)) (not (= .cse36 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse37) 256) |c_ULTIMATE.start_gcd_test_~a#1|) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|))) (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)))))) .cse20))) .cse26) (and .cse26 (or (and .cse13 (or (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse39 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse7))) (let ((.cse40 (+ (mod (+ .cse39 .cse10) 256) (- 256)))) (let ((.cse38 (mod .cse40 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= (mod .cse38 256) |c_ULTIMATE.start_gcd_test_~b#1|) (not (= .cse39 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (and (not (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)) (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse40) 256) |c_ULTIMATE.start_gcd_test_~a#1|))) (= .cse38 0) (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse42 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse7) 256))) (let ((.cse41 (mod .cse42 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= .cse41 0) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse42) 256)) (not (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)))) (not (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse41 256)) (not (= .cse42 0))))))) .cse14) (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse45 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse6))) (let ((.cse43 (+ (- 256) (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse45) 256)))) (let ((.cse44 (mod .cse43 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse43) 256) |c_ULTIMATE.start_gcd_test_~a#1|) (<= .cse6 |v_ULTIMATE.start_gcd_test_~a#1_26|))) (= .cse44 0) (not (= .cse45 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse44 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int) (|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse46 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse6) 256))) (let ((.cse47 (mod .cse46 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse46) 256)) (= (mod .cse47 256) |c_ULTIMATE.start_gcd_test_~b#1|) (not (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)) (not (= .cse46 0)) (= .cse47 0) (<= .cse6 |v_ULTIMATE.start_gcd_test_~a#1_26|)))))) .cse23 .cse24))) (and .cse19 .cse20 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int) (|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse50 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse48 (+ (- 256) (mod (+ .cse50 .cse10) 256)))) (let ((.cse49 (mod .cse48 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse48) 256) |c_ULTIMATE.start_gcd_test_~a#1|) (= .cse49 0) (not (= .cse50 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse49 256)) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|) (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse51 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_main1_~y~0#1|) 256))) (let ((.cse52 (mod .cse51 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse51) 256) |c_ULTIMATE.start_gcd_test_~a#1|) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|))) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse52 256)) (= .cse52 0) (not (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)) (not (= .cse51 0)))))))))) (and .cse0 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse54 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse7))) (let ((.cse53 (mod .cse54 256))) (and (not (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse53 |c_ULTIMATE.start_gcd_test_~a#1|) 256)) (not (= .cse53 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse55 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse53))) (and (= .cse3 (mod (+ (* .cse54 255) .cse55) 256)) (not (= .cse55 0)) (<= .cse6 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)))))))) .cse13 .cse14)))))) (<= |c_ULTIMATE.start_main1_~y~0#1| 127) (not (= |c_ULTIMATE.start_gcd_test_~a#1| 0))) is different from false [2022-11-20 21:00:40,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:00:40,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808312249] [2022-11-20 21:00:40,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 139 [2022-11-20 21:00:40,394 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 21:00:40,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364649672] [2022-11-20 21:00:40,395 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. [2022-11-20 21:00:40,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [562670871] [2022-11-20 21:00:40,398 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-20 21:00:40,398 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:00:40,399 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:00:40,399 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:00:40,399 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:00:40,409 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:314) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkSatTerm(SmtUtils.java:273) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:221) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.ExplicitValueDomain.isEqBottom(ExplicitValueDomain.java:73) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.CompoundDomain.isEqBottom(CompoundDomain.java:84) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 44 more [2022-11-20 21:00:40,414 INFO L184 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:00:40,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2022-11-20 21:00:40,414 ERROR L170 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2022-11-20 21:00:40,415 INFO L359 BasicCegarLoop]: Counterexample might be feasible [2022-11-20 21:00:40,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-20 21:00:40,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-20 21:00:40,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 21:00:40,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-20 21:00:40,627 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1] [2022-11-20 21:00:40,630 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 21:00:40,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:00:40 BoogieIcfgContainer [2022-11-20 21:00:40,644 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 21:00:40,645 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 21:00:40,645 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 21:00:40,646 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 21:00:40,647 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:59:03" (3/4) ... [2022-11-20 21:00:40,650 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 21:00:40,650 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 21:00:40,651 INFO L158 Benchmark]: Toolchain (without parser) took 98649.33ms. Allocated memory was 155.2MB in the beginning and 270.5MB in the end (delta: 115.3MB). Free memory was 121.4MB in the beginning and 136.2MB in the end (delta: -14.8MB). Peak memory consumption was 103.7MB. Max. memory is 16.1GB. [2022-11-20 21:00:40,651 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 111.1MB. Free memory was 78.0MB in the beginning and 78.0MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:00:40,652 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.10ms. Allocated memory is still 155.2MB. Free memory was 120.9MB in the beginning and 109.8MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 21:00:40,652 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.14ms. Allocated memory is still 155.2MB. Free memory was 109.8MB in the beginning and 107.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:00:40,653 INFO L158 Benchmark]: Boogie Preprocessor took 50.97ms. Allocated memory is still 155.2MB. Free memory was 107.6MB in the beginning and 106.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:00:40,653 INFO L158 Benchmark]: RCFGBuilder took 680.13ms. Allocated memory is still 155.2MB. Free memory was 106.2MB in the beginning and 90.9MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 21:00:40,654 INFO L158 Benchmark]: TraceAbstraction took 97554.30ms. Allocated memory was 155.2MB in the beginning and 270.5MB in the end (delta: 115.3MB). Free memory was 90.4MB in the beginning and 137.3MB in the end (delta: -46.9MB). Peak memory consumption was 70.2MB. Max. memory is 16.1GB. [2022-11-20 21:00:40,654 INFO L158 Benchmark]: Witness Printer took 4.90ms. Allocated memory is still 270.5MB. Free memory is still 136.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:00:40,656 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 111.1MB. Free memory was 78.0MB in the beginning and 78.0MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.10ms. Allocated memory is still 155.2MB. Free memory was 120.9MB in the beginning and 109.8MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.14ms. Allocated memory is still 155.2MB. Free memory was 109.8MB in the beginning and 107.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.97ms. Allocated memory is still 155.2MB. Free memory was 107.6MB in the beginning and 106.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 680.13ms. Allocated memory is still 155.2MB. Free memory was 106.2MB in the beginning and 90.9MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 97554.30ms. Allocated memory was 155.2MB in the beginning and 270.5MB in the end (delta: 115.3MB). Free memory was 90.4MB in the beginning and 137.3MB in the end (delta: -46.9MB). Peak memory consumption was 70.2MB. Max. memory is 16.1GB. * Witness Printer took 4.90ms. Allocated memory is still 270.5MB. Free memory is still 136.2MB. There was no memory consumed. 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 - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L108] COND TRUE __VERIFIER_nondet_int() [L109] CALL main1() [L49] signed char x = __VERIFIER_nondet_char(); [L50] signed char y = __VERIFIER_nondet_char(); [L51] signed char g; [L53] CALL, EXPR gcd_test(x, y) [L33] signed char t; [L35] COND TRUE a < (signed char)0 [L35] a = -a [L36] COND FALSE !(b < (signed char)0) [L38] COND TRUE b != (signed char)0 [L39] t = b [L40] b = a % b [L41] a = t [L38] COND TRUE b != (signed char)0 [L39] t = b [L40] b = a % b [L41] a = t [L38] COND TRUE b != (signed char)0 [L39] t = b [L40] b = a % b [L41] a = t [L38] COND FALSE !(b != (signed char)0) [L43] return a; [L53] RET, EXPR gcd_test(x, y) [L53] g = gcd_test(x, y) [L55] COND TRUE y > (signed char)0 [L56] CALL __VERIFIER_assert(y >= g) [L26] COND TRUE !(cond) [L27] reach_error() - UnprovableResult [Line: 102]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 97.4s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 131 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 99 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 87 IncrementalHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 32 mSDtfsCounter, 87 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 95.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 166 SizeOfPredicates, 7 NumberOfNonLiveVariables, 168 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/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_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_2_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/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 3c398287975b44a672accc5dcc25b28e536e19f2a0478c0e2a0b4b73bd7a8e18 --- 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 21:00:42,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:00:42,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:00:42,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:00:42,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:00:42,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:00:42,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:00:42,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:00:42,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:00:43,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:00:43,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:00:43,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:00:43,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:00:43,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:00:43,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:00:43,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:00:43,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:00:43,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:00:43,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:00:43,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:00:43,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:00:43,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:00:43,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:00:43,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:00:43,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:00:43,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:00:43,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:00:43,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:00:43,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:00:43,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:00:43,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:00:43,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:00:43,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:00:43,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:00:43,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:00:43,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:00:43,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:00:43,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:00:43,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:00:43,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:00:43,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:00:43,061 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-20 21:00:43,094 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:00:43,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:00:43,095 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:00:43,095 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:00:43,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:00:43,096 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:00:43,096 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:00:43,096 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:00:43,096 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:00:43,097 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:00:43,097 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:00:43,097 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:00:43,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:00:43,098 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 21:00:43,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 21:00:43,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:00:43,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:00:43,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:00:43,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:00:43,099 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 21:00:43,099 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 21:00:43,099 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 21:00:43,099 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 21:00:43,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:00:43,100 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:00:43,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:00:43,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:00:43,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 21:00:43,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:00:43,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:00:43,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:00:43,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:00:43,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:00:43,102 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 21:00:43,102 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 21:00:43,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:00:43,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:00:43,102 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 21:00:43,103 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_6ec2e4dc-d180-420b-b737-13e11ec91b70/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c398287975b44a672accc5dcc25b28e536e19f2a0478c0e2a0b4b73bd7a8e18 [2022-11-20 21:00:43,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:00:43,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:00:43,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:00:43,564 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:00:43,567 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:00:43,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/combinations/gcd_2+newton_2_8.i [2022-11-20 21:00:46,761 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:00:47,080 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:00:47,080 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/sv-benchmarks/c/combinations/gcd_2+newton_2_8.i [2022-11-20 21:00:47,093 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/data/958aebd71/126409b1c3d7435e97db6307ee3077ab/FLAG10ec7a6ee [2022-11-20 21:00:47,117 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/data/958aebd71/126409b1c3d7435e97db6307ee3077ab [2022-11-20 21:00:47,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:00:47,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:00:47,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:00:47,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:00:47,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:00:47,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:00:47" (1/1) ... [2022-11-20 21:00:47,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d69080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:00:47, skipping insertion in model container [2022-11-20 21:00:47,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:00:47" (1/1) ... [2022-11-20 21:00:47,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:00:47,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:00:47,302 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_6ec2e4dc-d180-420b-b737-13e11ec91b70/sv-benchmarks/c/combinations/gcd_2+newton_2_8.i[1226,1239] [2022-11-20 21:00:47,329 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_6ec2e4dc-d180-420b-b737-13e11ec91b70/sv-benchmarks/c/combinations/gcd_2+newton_2_8.i[2841,2854] [2022-11-20 21:00:47,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:00:47,344 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:00:47,358 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_6ec2e4dc-d180-420b-b737-13e11ec91b70/sv-benchmarks/c/combinations/gcd_2+newton_2_8.i[1226,1239] [2022-11-20 21:00:47,369 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_6ec2e4dc-d180-420b-b737-13e11ec91b70/sv-benchmarks/c/combinations/gcd_2+newton_2_8.i[2841,2854] [2022-11-20 21:00:47,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:00:47,384 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:00:47,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:00:47 WrapperNode [2022-11-20 21:00:47,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:00:47,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:00:47,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:00:47,386 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:00:47,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:00:47" (1/1) ... [2022-11-20 21:00:47,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:00:47" (1/1) ... [2022-11-20 21:00:47,423 INFO L138 Inliner]: procedures = 28, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 80 [2022-11-20 21:00:47,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:00:47,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:00:47,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:00:47,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:00:47,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:00:47" (1/1) ... [2022-11-20 21:00:47,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:00:47" (1/1) ... [2022-11-20 21:00:47,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:00:47" (1/1) ... [2022-11-20 21:00:47,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:00:47" (1/1) ... [2022-11-20 21:00:47,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:00:47" (1/1) ... [2022-11-20 21:00:47,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:00:47" (1/1) ... [2022-11-20 21:00:47,458 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:00:47" (1/1) ... [2022-11-20 21:00:47,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:00:47" (1/1) ... [2022-11-20 21:00:47,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:00:47,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:00:47,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:00:47,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:00:47,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:00:47" (1/1) ... [2022-11-20 21:00:47,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:00:47,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:00:47,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:00:47,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:00:47,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 21:00:47,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 21:00:47,564 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-20 21:00:47,564 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-20 21:00:47,564 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-20 21:00:47,564 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-20 21:00:47,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:00:47,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:00:47,645 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:00:47,647 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:00:56,051 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:00:56,062 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:00:56,062 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 21:00:56,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:00:56 BoogieIcfgContainer [2022-11-20 21:00:56,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:00:56,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:00:56,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:00:56,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:00:56,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:00:47" (1/3) ... [2022-11-20 21:00:56,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd46da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:00:56, skipping insertion in model container [2022-11-20 21:00:56,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:00:47" (2/3) ... [2022-11-20 21:00:56,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd46da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:00:56, skipping insertion in model container [2022-11-20 21:00:56,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:00:56" (3/3) ... [2022-11-20 21:00:56,075 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_2_8.i [2022-11-20 21:00:56,090 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:00:56,090 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 21:00:56,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:00:56,142 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;@6287eb1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:00:56,142 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 21:00:56,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:00:56,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 21:00:56,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:00:56,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:00:56,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:00:56,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:00:56,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-11-20 21:00:56,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:00:56,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033431639] [2022-11-20 21:00:56,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:00:56,176 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:00:56,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:00:56,177 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:00:56,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 21:00:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:00:56,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 21:00:56,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:00:56,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:00:56,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:00:56,459 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:00:56,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033431639] [2022-11-20 21:00:56,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033431639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:00:56,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:00:56,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:00:56,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180298864] [2022-11-20 21:00:56,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:00:56,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:00:56,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:00:56,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:00:56,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:00:56,510 INFO L87 Difference]: Start difference. First operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 21:00:56,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:00:56,539 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2022-11-20 21:00:56,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:00:56,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 21:00:56,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:00:56,549 INFO L225 Difference]: With dead ends: 68 [2022-11-20 21:00:56,550 INFO L226 Difference]: Without dead ends: 30 [2022-11-20 21:00:56,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:00:56,557 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:00:56,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 4 Unchecked, 0.0s Time] [2022-11-20 21:00:56,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-20 21:00:56,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-20 21:00:56,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:00:56,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-20 21:00:56,598 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 11 [2022-11-20 21:00:56,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:00:56,598 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-20 21:00:56,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 21:00:56,599 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-20 21:00:56,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 21:00:56,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:00:56,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:00:56,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 21:00:56,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:00:56,814 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:00:56,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:00:56,815 INFO L85 PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times [2022-11-20 21:00:56,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:00:56,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350903238] [2022-11-20 21:00:56,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:00:56,816 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:00:56,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:00:56,818 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:00:56,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 21:00:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:00:56,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:00:56,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:00:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:00:57,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:00:57,088 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:00:57,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350903238] [2022-11-20 21:00:57,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350903238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:00:57,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:00:57,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:00:57,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614652437] [2022-11-20 21:00:57,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:00:57,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:00:57,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:00:57,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:00:57,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:00:57,092 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 21:00:57,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:00:57,326 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2022-11-20 21:00:57,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:00:57,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 21:00:57,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:00:57,327 INFO L225 Difference]: With dead ends: 37 [2022-11-20 21:00:57,327 INFO L226 Difference]: Without dead ends: 31 [2022-11-20 21:00:57,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:00:57,329 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:00:57,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 84 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 21:00:57,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-20 21:00:57,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-11-20 21:00:57,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:00:57,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-20 21:00:57,337 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 11 [2022-11-20 21:00:57,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:00:57,338 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-20 21:00:57,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 21:00:57,338 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-20 21:00:57,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 21:00:57,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:00:57,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:00:57,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 21:00:57,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:00:57,547 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:00:57,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:00:57,547 INFO L85 PathProgramCache]: Analyzing trace with hash 149955676, now seen corresponding path program 1 times [2022-11-20 21:00:57,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:00:57,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146483225] [2022-11-20 21:00:57,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:00:57,553 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:00:57,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:00:57,554 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:00:57,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 21:00:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:00:57,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:00:57,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:00:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:00:57,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:00:57,818 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:00:57,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146483225] [2022-11-20 21:00:57,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146483225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:00:57,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:00:57,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:00:57,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205539175] [2022-11-20 21:00:57,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:00:57,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:00:57,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:00:57,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:00:57,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:00:57,821 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 21:00:57,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:00:57,962 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2022-11-20 21:00:57,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:00:57,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 21:00:57,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:00:57,966 INFO L225 Difference]: With dead ends: 38 [2022-11-20 21:00:57,966 INFO L226 Difference]: Without dead ends: 30 [2022-11-20 21:00:57,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:00:57,968 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:00:57,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 84 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:00:57,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-20 21:00:57,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-20 21:00:57,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:00:57,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-11-20 21:00:57,992 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2022-11-20 21:00:57,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:00:57,993 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-11-20 21:00:57,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 21:00:57,993 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-11-20 21:00:57,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 21:00:57,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:00:57,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:00:58,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 21:00:58,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:00:58,199 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:00:58,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:00:58,200 INFO L85 PathProgramCache]: Analyzing trace with hash -659390950, now seen corresponding path program 1 times [2022-11-20 21:00:58,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:00:58,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301754013] [2022-11-20 21:00:58,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:00:58,201 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:00:58,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:00:58,202 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:00:58,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 21:00:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:00:58,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 21:00:58,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:00:58,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:00:58,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:00:59,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:00:59,839 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:00:59,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301754013] [2022-11-20 21:00:59,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301754013] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:00:59,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1120169931] [2022-11-20 21:00:59,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:00:59,841 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 21:00:59,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 21:00:59,850 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 21:00:59,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-11-20 21:01:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:01:00,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 21:01:00,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:01:00,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:01:00,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:01:00,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:01:00,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1120169931] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:01:00,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085014804] [2022-11-20 21:01:00,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:01:00,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:01:00,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:01:00,498 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:01:00,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 21:01:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:01:00,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 21:01:00,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:01:00,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:01:00,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:01:01,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:01:01,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085014804] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:01:01,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 21:01:01,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 7] total 18 [2022-11-20 21:01:01,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507656940] [2022-11-20 21:01:01,789 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 21:01:01,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 21:01:01,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:01:01,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 21:01:01,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-11-20 21:01:01,791 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 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 21:01:06,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:01:06,265 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2022-11-20 21:01:06,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 21:01:06,266 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 21:01:06,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:01:06,267 INFO L225 Difference]: With dead ends: 43 [2022-11-20 21:01:06,267 INFO L226 Difference]: Without dead ends: 20 [2022-11-20 21:01:06,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=248, Invalid=744, Unknown=0, NotChecked=0, Total=992 [2022-11-20 21:01:06,270 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 65 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 21:01:06,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 159 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 21:01:06,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-20 21:01:06,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-20 21:01:06,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:01:06,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-11-20 21:01:06,274 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 12 [2022-11-20 21:01:06,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:01:06,275 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-11-20 21:01:06,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 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 21:01:06,275 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-11-20 21:01:06,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 21:01:06,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:01:06,277 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:01:06,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 21:01:06,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-11-20 21:01:06,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 21:01:06,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:01:06,887 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:01:06,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:01:06,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1535073882, now seen corresponding path program 1 times [2022-11-20 21:01:06,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:01:06,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099531965] [2022-11-20 21:01:06,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:01:06,889 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:01:06,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:01:06,892 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:01:06,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 21:01:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 21:01:26,871 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 21:08:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 21:08:51,239 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-20 21:08:51,239 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 21:08:51,241 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-20 21:08:51,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-20 21:08:51,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 21:08:51,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:08:51,447 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-20 21:08:51,451 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 21:08:51,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:08:51 BoogieIcfgContainer [2022-11-20 21:08:51,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 21:08:51,495 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 21:08:51,495 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 21:08:51,496 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 21:08:51,496 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:00:56" (3/4) ... [2022-11-20 21:08:51,498 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 21:08:51,545 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 21:08:51,545 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 21:08:51,546 INFO L158 Benchmark]: Toolchain (without parser) took 484424.54ms. Allocated memory was 75.5MB in the beginning and 96.5MB in the end (delta: 21.0MB). Free memory was 53.0MB in the beginning and 60.2MB in the end (delta: -7.2MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2022-11-20 21:08:51,546 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 75.5MB. Free memory is still 52.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:08:51,547 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.34ms. Allocated memory is still 75.5MB. Free memory was 52.8MB in the beginning and 41.1MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 21:08:51,547 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.02ms. Allocated memory is still 75.5MB. Free memory was 41.0MB in the beginning and 39.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:08:51,548 INFO L158 Benchmark]: Boogie Preprocessor took 41.13ms. Allocated memory is still 75.5MB. Free memory was 39.3MB in the beginning and 37.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:08:51,548 INFO L158 Benchmark]: RCFGBuilder took 8597.96ms. Allocated memory is still 75.5MB. Free memory was 37.5MB in the beginning and 44.8MB in the end (delta: -7.3MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2022-11-20 21:08:51,549 INFO L158 Benchmark]: TraceAbstraction took 475427.92ms. Allocated memory was 75.5MB in the beginning and 96.5MB in the end (delta: 21.0MB). Free memory was 44.2MB in the beginning and 62.3MB in the end (delta: -18.0MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. [2022-11-20 21:08:51,549 INFO L158 Benchmark]: Witness Printer took 50.21ms. Allocated memory is still 96.5MB. Free memory was 62.3MB in the beginning and 60.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:08:51,551 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 75.5MB. Free memory is still 52.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.34ms. Allocated memory is still 75.5MB. Free memory was 52.8MB in the beginning and 41.1MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.02ms. Allocated memory is still 75.5MB. Free memory was 41.0MB in the beginning and 39.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.13ms. Allocated memory is still 75.5MB. Free memory was 39.3MB in the beginning and 37.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 8597.96ms. Allocated memory is still 75.5MB. Free memory was 37.5MB in the beginning and 44.8MB in the end (delta: -7.3MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * TraceAbstraction took 475427.92ms. Allocated memory was 75.5MB in the beginning and 96.5MB in the end (delta: 21.0MB). Free memory was 44.2MB in the beginning and 62.3MB in the end (delta: -18.0MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. * Witness Printer took 50.21ms. Allocated memory is still 96.5MB. Free memory was 62.3MB in the beginning and 60.2MB in the end (delta: 2.1MB). 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 - CounterExampleResult [Line: 102]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L93] CALL, EXPR f(IN) VAL [\old(x)=1.7085765600204468] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=1.7085765600204468, \result=1.0070574283599854, x=1.7085765600204468] [L93] RET, EXPR f(IN) VAL [f(IN)=1.0070574283599854, IN=1.7085765600204468] [L93] CALL, EXPR fp(IN) VAL [\old(x)=1.7085765600204468] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=1.7085765600204468, \result=-0.06998457759618759, x=1.7085765600204468] [L93] RET, EXPR fp(IN) VAL [f(IN)=1.0070574283599854, fp(IN)=-0.06998457759618759, IN=1.7085765600204468] [L93] float x = IN - f(IN)/fp(IN); [L95] CALL, EXPR f(x) VAL [\old(x)=16.098281860351562] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=16.098281860351562, \result=63924.37890625, x=16.098281860351562] [L95] RET, EXPR f(x) VAL [f(x)=63924.37890625, IN=1.7085765600204468, x=16.098281860351562] [L95] CALL, EXPR fp(x) VAL [\old(x)=16.098281860351562] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=16.098281860351562, \result=26843.58984375, x=16.098281860351562] [L95] RET, EXPR fp(x) VAL [f(x)=63924.37890625, fp(x)=26843.58984375, IN=1.7085765600204468, x=16.098281860351562] [L95] x = x - f(x)/fp(x) [L101] COND TRUE !(x < 0.1) VAL [IN=1.7085765600204468, x=13.716917037963867] [L102] reach_error() VAL [IN=1.7085765600204468, x=13.716917037963867] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 37 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 475.3s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71 mSDsluCounter, 407 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 4 IncrementalHoareTripleChecker+Unchecked, 280 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 90 IncrementalHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 127 mSDtfsCounter, 90 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 20.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 97 ConstructedInterpolants, 1 QuantifiedInterpolants, 435 SizeOfPredicates, 27 NumberOfNonLiveVariables, 258 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 1/7 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-20 21:08:51,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec2e4dc-d180-420b-b737-13e11ec91b70/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE