./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 870393880f3eeabaf9027e474e4a742f6bf5934c1db12e4b3a2cd7e0ec435e2a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 16:07:44,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:07:44,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:07:44,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:07:44,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:07:44,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:07:44,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:07:44,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:07:44,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:07:44,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:07:44,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:07:44,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:07:44,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:07:44,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:07:44,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:07:44,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:07:44,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:07:44,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:07:44,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:07:44,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:07:44,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:07:44,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:07:44,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:07:44,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:07:44,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:07:44,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:07:44,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:07:44,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:07:44,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:07:44,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:07:44,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:07:44,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:07:44,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:07:44,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:07:44,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:07:44,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:07:44,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:07:44,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:07:44,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:07:44,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:07:44,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:07:44,176 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 16:07:44,199 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:07:44,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:07:44,200 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:07:44,200 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:07:44,201 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:07:44,201 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:07:44,201 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:07:44,202 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:07:44,202 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:07:44,202 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 16:07:44,202 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:07:44,203 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:07:44,203 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 16:07:44,203 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 16:07:44,203 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:07:44,204 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 16:07:44,204 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 16:07:44,204 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 16:07:44,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:07:44,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:07:44,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:07:44,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:07:44,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:07:44,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:07:44,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:07:44,207 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:07:44,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:07:44,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:07:44,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:07:44,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:07:44,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:07:44,208 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 16:07:44,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:07:44,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:07:44,209 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 16:07:44,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 16:07:44,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:07:44,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:07:44,210 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_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 870393880f3eeabaf9027e474e4a742f6bf5934c1db12e4b3a2cd7e0ec435e2a [2022-11-23 16:07:44,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:07:44,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:07:44,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:07:44,546 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:07:44,547 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:07:44,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c [2022-11-23 16:07:47,630 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:07:47,846 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:07:47,846 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c [2022-11-23 16:07:47,852 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/data/3111fa0cc/129e622a5bff40d5b3748d4fdb2a4793/FLAG753487e88 [2022-11-23 16:07:47,867 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/data/3111fa0cc/129e622a5bff40d5b3748d4fdb2a4793 [2022-11-23 16:07:47,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:07:47,871 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:07:47,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:07:47,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:07:47,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:07:47,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:07:47" (1/1) ... [2022-11-23 16:07:47,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@553002cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:47, skipping insertion in model container [2022-11-23 16:07:47,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:07:47" (1/1) ... [2022-11-23 16:07:47,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:07:47,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:07:48,097 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_a360fdaa-cab4-468d-8882-7b307a2bad1f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c[1117,1130] [2022-11-23 16:07:48,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:07:48,145 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:07:48,156 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_a360fdaa-cab4-468d-8882-7b307a2bad1f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c[1117,1130] [2022-11-23 16:07:48,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:07:48,194 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:07:48,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:48 WrapperNode [2022-11-23 16:07:48,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:07:48,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:07:48,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:07:48,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:07:48,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:48" (1/1) ... [2022-11-23 16:07:48,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:48" (1/1) ... [2022-11-23 16:07:48,235 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2022-11-23 16:07:48,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:07:48,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:07:48,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:07:48,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:07:48,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:48" (1/1) ... [2022-11-23 16:07:48,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:48" (1/1) ... [2022-11-23 16:07:48,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:48" (1/1) ... [2022-11-23 16:07:48,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:48" (1/1) ... [2022-11-23 16:07:48,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:48" (1/1) ... [2022-11-23 16:07:48,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:48" (1/1) ... [2022-11-23 16:07:48,258 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:48" (1/1) ... [2022-11-23 16:07:48,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:48" (1/1) ... [2022-11-23 16:07:48,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:07:48,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:07:48,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:07:48,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:07:48,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:48" (1/1) ... [2022-11-23 16:07:48,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:07:48,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:07:48,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:07:48,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:07:48,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:07:48,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:07:48,408 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:07:48,410 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:07:48,545 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:07:48,564 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:07:48,564 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 16:07:48,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:07:48 BoogieIcfgContainer [2022-11-23 16:07:48,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:07:48,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:07:48,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:07:48,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:07:48,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:07:47" (1/3) ... [2022-11-23 16:07:48,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37499b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:07:48, skipping insertion in model container [2022-11-23 16:07:48,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:48" (2/3) ... [2022-11-23 16:07:48,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37499b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:07:48, skipping insertion in model container [2022-11-23 16:07:48,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:07:48" (3/3) ... [2022-11-23 16:07:48,577 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.twocount32.c [2022-11-23 16:07:48,596 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:07:48,596 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 16:07:48,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:07:48,647 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;@6bb3a6e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:07:48,647 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 16:07:48,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:07:48,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 16:07:48,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:07:48,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 16:07:48,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:07:48,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:07:48,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-23 16:07:48,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:07:48,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585551415] [2022-11-23 16:07:48,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:07:48,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:07:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:07:49,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:07:49,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:07:49,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585551415] [2022-11-23 16:07:49,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585551415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:07:49,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:07:49,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:07:49,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258366017] [2022-11-23 16:07:49,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:07:49,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:07:49,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:07:49,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:07:49,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:07:49,633 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:07:49,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:07:49,700 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2022-11-23 16:07:49,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 16:07:49,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-11-23 16:07:49,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:07:49,710 INFO L225 Difference]: With dead ends: 15 [2022-11-23 16:07:49,711 INFO L226 Difference]: Without dead ends: 9 [2022-11-23 16:07:49,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:07:49,717 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:07:49,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 7 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:07:49,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-23 16:07:49,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2022-11-23 16:07:49,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:07:49,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-11-23 16:07:49,767 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2022-11-23 16:07:49,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:07:49,783 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-11-23 16:07:49,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:07:49,784 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-11-23 16:07:49,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 16:07:49,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:07:49,785 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-23 16:07:49,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 16:07:49,786 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:07:49,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:07:49,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2022-11-23 16:07:49,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:07:49,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026738687] [2022-11-23 16:07:49,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:07:49,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:07:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 16:07:49,900 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 16:07:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 16:07:50,006 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 16:07:50,007 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 16:07:50,009 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 16:07:50,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 16:07:50,015 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 16:07:50,019 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 16:07:50,037 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 16:07:50,038 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 16:07:50,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:07:50 BoogieIcfgContainer [2022-11-23 16:07:50,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 16:07:50,047 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 16:07:50,047 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 16:07:50,047 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 16:07:50,048 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:07:48" (3/4) ... [2022-11-23 16:07:50,051 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 16:07:50,052 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 16:07:50,053 INFO L158 Benchmark]: Toolchain (without parser) took 2181.38ms. Allocated memory is still 157.3MB. Free memory was 122.7MB in the beginning and 92.8MB in the end (delta: 29.8MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. [2022-11-23 16:07:50,053 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 130.0MB. Free memory is still 97.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 16:07:50,054 INFO L158 Benchmark]: CACSL2BoogieTranslator took 323.01ms. Allocated memory is still 157.3MB. Free memory was 122.7MB in the beginning and 118.1MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 16:07:50,054 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.95ms. Allocated memory is still 157.3MB. Free memory was 118.1MB in the beginning and 116.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 16:07:50,055 INFO L158 Benchmark]: Boogie Preprocessor took 24.86ms. Allocated memory is still 157.3MB. Free memory was 116.8MB in the beginning and 115.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 16:07:50,055 INFO L158 Benchmark]: RCFGBuilder took 305.15ms. Allocated memory is still 157.3MB. Free memory was 115.2MB in the beginning and 102.1MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 16:07:50,056 INFO L158 Benchmark]: TraceAbstraction took 1477.01ms. Allocated memory is still 157.3MB. Free memory was 101.3MB in the beginning and 92.8MB in the end (delta: 8.5MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2022-11-23 16:07:50,057 INFO L158 Benchmark]: Witness Printer took 4.94ms. Allocated memory is still 157.3MB. Free memory is still 92.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 16:07:50,059 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 130.0MB. Free memory is still 97.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 323.01ms. Allocated memory is still 157.3MB. Free memory was 122.7MB in the beginning and 118.1MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.95ms. Allocated memory is still 157.3MB. Free memory was 118.1MB in the beginning and 116.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.86ms. Allocated memory is still 157.3MB. Free memory was 116.8MB in the beginning and 115.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 305.15ms. Allocated memory is still 157.3MB. Free memory was 115.2MB in the beginning and 102.1MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1477.01ms. Allocated memory is still 157.3MB. Free memory was 101.3MB in the beginning and 92.8MB in the end (delta: 8.5MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Witness Printer took 4.94ms. Allocated memory is still 157.3MB. Free memory is still 92.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 21]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 76, overapproximation of bitwiseAnd at line 48. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 32); [L30] const SORT_2 msb_SORT_2 = (SORT_2)1 << (32 - 1); [L32] const SORT_2 var_4 = 0; [L33] const SORT_2 var_9 = 1; [L34] const SORT_2 var_16 = 3; [L36] SORT_1 input_3; [L38] SORT_2 state_5 = __VERIFIER_nondet_uint() & mask_SORT_2; [L39] SORT_2 state_6 = __VERIFIER_nondet_uint() & mask_SORT_2; [L41] SORT_2 init_7_arg_1 = var_4; [L42] state_5 = init_7_arg_1 [L43] SORT_2 init_8_arg_1 = var_4; [L44] state_6 = init_8_arg_1 VAL [init_7_arg_1=0, init_8_arg_1=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, state_5=0, state_6=0, var_16=3, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [cond=1, unknown-#in~cond-unknown=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=3, next_15_arg_1=3, state_5=3, state_6=3, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=3, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=1, var_13=3, var_13_arg_0=0, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND TRUE !(cond) VAL [cond=0, unknown-#in~cond-unknown=0] [L21] reach_error() VAL [cond=0, unknown-#in~cond-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 3 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=1, InterpolantAutomatonStates: 5, 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, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 [2022-11-23 16:07:50,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 870393880f3eeabaf9027e474e4a742f6bf5934c1db12e4b3a2cd7e0ec435e2a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 16:07:52,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:07:52,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:07:52,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:07:52,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:07:52,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:07:52,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:07:52,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:07:52,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:07:52,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:07:52,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:07:52,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:07:52,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:07:52,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:07:52,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:07:52,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:07:52,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:07:52,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:07:52,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:07:52,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:07:52,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:07:52,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:07:52,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:07:52,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:07:52,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:07:52,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:07:52,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:07:52,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:07:52,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:07:52,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:07:52,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:07:52,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:07:52,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:07:52,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:07:52,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:07:52,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:07:52,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:07:52,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:07:52,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:07:52,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:07:52,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:07:52,739 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-23 16:07:52,760 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:07:52,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:07:52,761 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:07:52,761 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:07:52,762 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:07:52,762 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:07:52,762 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:07:52,763 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:07:52,763 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:07:52,763 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:07:52,764 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:07:52,764 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:07:52,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:07:52,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:07:52,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:07:52,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:07:52,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:07:52,766 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 16:07:52,766 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 16:07:52,767 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 16:07:52,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:07:52,767 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:07:52,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:07:52,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:07:52,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 16:07:52,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:07:52,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:07:52,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:07:52,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:07:52,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:07:52,770 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 16:07:52,770 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 16:07:52,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:07:52,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:07:52,771 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 16:07:52,771 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_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 870393880f3eeabaf9027e474e4a742f6bf5934c1db12e4b3a2cd7e0ec435e2a [2022-11-23 16:07:53,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:07:53,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:07:53,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:07:53,245 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:07:53,245 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:07:53,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c [2022-11-23 16:07:56,257 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:07:56,536 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:07:56,537 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c [2022-11-23 16:07:56,544 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/data/f0f126980/091c5a34ad8641a6bdb1ddbb07823480/FLAG124a49f58 [2022-11-23 16:07:56,558 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/data/f0f126980/091c5a34ad8641a6bdb1ddbb07823480 [2022-11-23 16:07:56,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:07:56,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:07:56,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:07:56,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:07:56,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:07:56,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:07:56" (1/1) ... [2022-11-23 16:07:56,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@336699ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:56, skipping insertion in model container [2022-11-23 16:07:56,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:07:56" (1/1) ... [2022-11-23 16:07:56,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:07:56,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:07:56,778 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_a360fdaa-cab4-468d-8882-7b307a2bad1f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c[1117,1130] [2022-11-23 16:07:56,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:07:56,847 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:07:56,861 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_a360fdaa-cab4-468d-8882-7b307a2bad1f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c[1117,1130] [2022-11-23 16:07:56,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:07:56,901 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:07:56,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:56 WrapperNode [2022-11-23 16:07:56,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:07:56,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:07:56,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:07:56,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:07:56,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:56" (1/1) ... [2022-11-23 16:07:56,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:56" (1/1) ... [2022-11-23 16:07:56,953 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2022-11-23 16:07:56,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:07:56,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:07:56,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:07:56,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:07:56,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:56" (1/1) ... [2022-11-23 16:07:56,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:56" (1/1) ... [2022-11-23 16:07:56,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:56" (1/1) ... [2022-11-23 16:07:56,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:56" (1/1) ... [2022-11-23 16:07:56,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:56" (1/1) ... [2022-11-23 16:07:56,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:56" (1/1) ... [2022-11-23 16:07:56,987 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:56" (1/1) ... [2022-11-23 16:07:56,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:56" (1/1) ... [2022-11-23 16:07:57,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:07:57,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:07:57,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:07:57,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:07:57,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:56" (1/1) ... [2022-11-23 16:07:57,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:07:57,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:07:57,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:07:57,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:07:57,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:07:57,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:07:57,203 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:07:57,205 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:07:57,481 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:07:57,489 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:07:57,511 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 16:07:57,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:07:57 BoogieIcfgContainer [2022-11-23 16:07:57,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:07:57,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:07:57,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:07:57,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:07:57,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:07:56" (1/3) ... [2022-11-23 16:07:57,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b8ef3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:07:57, skipping insertion in model container [2022-11-23 16:07:57,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:56" (2/3) ... [2022-11-23 16:07:57,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b8ef3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:07:57, skipping insertion in model container [2022-11-23 16:07:57,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:07:57" (3/3) ... [2022-11-23 16:07:57,538 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.twocount32.c [2022-11-23 16:07:57,569 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:07:57,572 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 16:07:57,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:07:57,643 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;@30b3525d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:07:57,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 16:07:57,647 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:07:57,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 16:07:57,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:07:57,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 16:07:57,655 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:07:57,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:07:57,661 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-23 16:07:57,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:07:57,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791244601] [2022-11-23 16:07:57,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:07:57,676 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 [2022-11-23 16:07:57,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:07:57,682 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:07:57,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:07:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:07:57,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 16:07:57,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:07:57,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:07:57,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:07:57,883 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:07:57,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791244601] [2022-11-23 16:07:57,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791244601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:07:57,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:07:57,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:07:57,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565799413] [2022-11-23 16:07:57,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:07:57,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:07:57,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:07:57,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:07:57,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:07:57,944 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:07:58,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:07:58,003 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-23 16:07:58,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 16:07:58,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-11-23 16:07:58,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:07:58,027 INFO L225 Difference]: With dead ends: 20 [2022-11-23 16:07:58,027 INFO L226 Difference]: Without dead ends: 11 [2022-11-23 16:07:58,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:07:58,034 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:07:58,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:07:58,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-23 16:07:58,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-23 16:07:58,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:07:58,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-23 16:07:58,074 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-23 16:07:58,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:07:58,075 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-23 16:07:58,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:07:58,076 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-23 16:07:58,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 16:07:58,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:07:58,076 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-23 16:07:58,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:07:58,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:07:58,288 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:07:58,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:07:58,289 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-23 16:07:58,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:07:58,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407919846] [2022-11-23 16:07:58,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:07:58,290 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 [2022-11-23 16:07:58,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:07:58,320 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:07:58,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:07:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:07:58,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 16:07:58,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:07:58,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:07:58,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:07:59,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:07:59,014 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:07:59,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407919846] [2022-11-23 16:07:59,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1407919846] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:07:59,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1222824724] [2022-11-23 16:07:59,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:07:59,015 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 16:07:59,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 16:07:59,018 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 16:07:59,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-23 16:07:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:07:59,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 16:07:59,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:07:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:07:59,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:07:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:07:59,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1222824724] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:07:59,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219197899] [2022-11-23 16:07:59,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:07:59,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:07:59,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:07:59,614 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:07:59,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 16:07:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:07:59,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-23 16:07:59,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:07:59,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:07:59,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:08:00,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:00,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219197899] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:08:00,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 16:08:00,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 17 [2022-11-23 16:08:00,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443963051] [2022-11-23 16:08:00,270 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 16:08:00,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 16:08:00,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:08:00,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 16:08:00,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-11-23 16:08:00,273 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:00,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:08:00,827 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-23 16:08:00,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 16:08:00,828 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 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 8 [2022-11-23 16:08:00,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:08:00,828 INFO L225 Difference]: With dead ends: 19 [2022-11-23 16:08:00,828 INFO L226 Difference]: Without dead ends: 17 [2022-11-23 16:08:00,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-23 16:08:00,831 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 32 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:08:00,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 29 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:08:00,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-23 16:08:00,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-23 16:08:00,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:00,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-23 16:08:00,838 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-11-23 16:08:00,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:08:00,839 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-23 16:08:00,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:00,839 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-23 16:08:00,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 16:08:00,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:08:00,840 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-23 16:08:00,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 16:08:01,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:08:01,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-23 16:08:01,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 16:08:01,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:08:01,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:08:01,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 2 times [2022-11-23 16:08:01,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:08:01,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878598195] [2022-11-23 16:08:01,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 16:08:01,449 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 [2022-11-23 16:08:01,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:08:01,457 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:08:01,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/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 (6)] Waiting until timeout for monitored process [2022-11-23 16:08:01,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 16:08:01,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:08:01,569 WARN L261 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-23 16:08:01,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:08:02,956 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:02,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:08:06,632 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:06,632 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:08:06,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878598195] [2022-11-23 16:08:06,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878598195] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:08:06,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1643534171] [2022-11-23 16:08:06,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 16:08:06,633 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 16:08:06,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 16:08:06,635 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 16:08:06,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-23 16:08:06,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 16:08:06,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:08:06,782 WARN L261 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-23 16:08:06,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:08:07,689 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:07,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:08:09,541 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:09,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1643534171] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:08:09,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71274363] [2022-11-23 16:08:09,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 16:08:09,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:08:09,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:08:09,547 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:08:09,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 16:08:09,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 16:08:09,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:08:09,637 WARN L261 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-23 16:08:09,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:08:12,823 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:12,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:08:14,412 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:14,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71274363] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:08:14,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 16:08:14,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7, 7, 8, 8] total 24 [2022-11-23 16:08:14,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197544614] [2022-11-23 16:08:14,413 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 16:08:14,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-23 16:08:14,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:08:14,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-23 16:08:14,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=406, Unknown=1, NotChecked=0, Total=552 [2022-11-23 16:08:14,415 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:15,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:08:15,084 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-11-23 16:08:15,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 16:08:15,085 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 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 14 [2022-11-23 16:08:15,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:08:15,086 INFO L225 Difference]: With dead ends: 22 [2022-11-23 16:08:15,086 INFO L226 Difference]: Without dead ends: 20 [2022-11-23 16:08:15,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=226, Invalid=585, Unknown=1, NotChecked=0, Total=812 [2022-11-23 16:08:15,088 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 31 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:08:15,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 53 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:08:15,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-23 16:08:15,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-23 16:08:15,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:15,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-23 16:08:15,096 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-11-23 16:08:15,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:08:15,097 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-23 16:08:15,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:15,097 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-23 16:08:15,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 16:08:15,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:08:15,098 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-23 16:08:15,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/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 (6)] Ended with exit code 0 [2022-11-23 16:08:15,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-23 16:08:15,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-11-23 16:08:15,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 16:08:15,711 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:08:15,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:08:15,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 3 times [2022-11-23 16:08:15,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:08:15,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072962005] [2022-11-23 16:08:15,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:08:15,713 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 [2022-11-23 16:08:15,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:08:15,718 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:08:15,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/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 (9)] Waiting until timeout for monitored process [2022-11-23 16:08:15,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-23 16:08:15,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:08:15,840 WARN L261 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 98 conjunts are in the unsatisfiable core [2022-11-23 16:08:15,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:08:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:17,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:08:49,244 WARN L233 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 273 DAG size of output: 241 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:08:57,015 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:57,015 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:08:57,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072962005] [2022-11-23 16:08:57,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072962005] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:08:57,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2070265390] [2022-11-23 16:08:57,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:08:57,016 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 16:08:57,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 16:08:57,019 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 16:08:57,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-23 16:08:57,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-23 16:08:57,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:08:57,232 WARN L261 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 98 conjunts are in the unsatisfiable core [2022-11-23 16:08:57,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:08:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:58,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:09:17,115 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:17,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2070265390] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:09:17,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149486269] [2022-11-23 16:09:17,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:09:17,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:09:17,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:09:17,121 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:09:17,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 16:09:17,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-23 16:09:17,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:09:17,225 WARN L261 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-23 16:09:17,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:18,466 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:18,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:09:35,263 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:35,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149486269] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:09:35,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 16:09:35,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 12, 12] total 22 [2022-11-23 16:09:35,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540559952] [2022-11-23 16:09:35,265 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 16:09:35,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-23 16:09:35,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:09:35,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-23 16:09:35,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=351, Unknown=1, NotChecked=0, Total=462 [2022-11-23 16:09:35,267 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:09:41,735 WARN L233 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 358 DAG size of output: 109 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:09:44,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-23 16:09:51,325 WARN L233 SmtUtils]: Spent 6.00s on a formula simplification. DAG size of input: 230 DAG size of output: 184 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:09:53,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-23 16:10:03,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:03,781 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-11-23 16:10:03,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 16:10:03,781 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 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 17 [2022-11-23 16:10:03,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:03,782 INFO L225 Difference]: With dead ends: 39 [2022-11-23 16:10:03,782 INFO L226 Difference]: Without dead ends: 37 [2022-11-23 16:10:03,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 58 SyntacticMatches, 18 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 60.2s TimeCoverageRelationStatistics Valid=266, Invalid=855, Unknown=1, NotChecked=0, Total=1122 [2022-11-23 16:10:03,784 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 92 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:03,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 38 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 90 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-23 16:10:03,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-23 16:10:03,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2022-11-23 16:10:03,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:03,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2022-11-23 16:10:03,800 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 17 [2022-11-23 16:10:03,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:03,800 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2022-11-23 16:10:03,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:03,801 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2022-11-23 16:10:03,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-23 16:10:03,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:03,802 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1] [2022-11-23 16:10:03,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-23 16:10:04,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-23 16:10:04,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/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 (9)] Forceful destruction successful, exit code 0 [2022-11-23 16:10:04,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:10:04,403 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:10:04,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:04,403 INFO L85 PathProgramCache]: Analyzing trace with hash 142558665, now seen corresponding path program 4 times [2022-11-23 16:10:04,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:10:04,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342997854] [2022-11-23 16:10:04,404 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 16:10:04,404 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 [2022-11-23 16:10:04,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:10:04,406 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 16:10:04,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/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 (12)] Waiting until timeout for monitored process [2022-11-23 16:10:04,544 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 16:10:04,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-23 16:10:04,544 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 16:10:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 16:10:04,700 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-23 16:10:04,700 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 16:10:04,701 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 16:10:04,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/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 (12)] Forceful destruction successful, exit code 0 [2022-11-23 16:10:04,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 16:10:04,907 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1] [2022-11-23 16:10:04,911 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 16:10:04,944 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 16:10:04,944 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 16:10:04,944 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 16:10:04,944 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 16:10:04,945 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 16:10:04,945 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 16:10:04,945 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 16:10:04,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:10:04 BoogieIcfgContainer [2022-11-23 16:10:04,958 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 16:10:04,959 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 16:10:04,959 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 16:10:04,959 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 16:10:04,960 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:07:57" (3/4) ... [2022-11-23 16:10:04,962 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-23 16:10:04,988 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 16:10:04,989 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 16:10:04,989 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 16:10:04,989 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 16:10:04,989 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 16:10:04,989 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 16:10:04,989 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 16:10:05,057 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 16:10:05,057 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 16:10:05,057 INFO L158 Benchmark]: Toolchain (without parser) took 128495.19ms. Allocated memory was 88.1MB in the beginning and 144.7MB in the end (delta: 56.6MB). Free memory was 65.6MB in the beginning and 112.7MB in the end (delta: -47.1MB). Peak memory consumption was 91.2MB. Max. memory is 16.1GB. [2022-11-23 16:10:05,058 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 88.1MB. Free memory was 65.5MB in the beginning and 65.4MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 16:10:05,058 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.40ms. Allocated memory is still 88.1MB. Free memory was 65.2MB in the beginning and 54.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 16:10:05,058 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.53ms. Allocated memory is still 88.1MB. Free memory was 54.4MB in the beginning and 52.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 16:10:05,059 INFO L158 Benchmark]: Boogie Preprocessor took 49.80ms. Allocated memory is still 88.1MB. Free memory was 52.6MB in the beginning and 51.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 16:10:05,059 INFO L158 Benchmark]: RCFGBuilder took 509.00ms. Allocated memory is still 88.1MB. Free memory was 51.3MB in the beginning and 66.2MB in the end (delta: -15.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 16:10:05,059 INFO L158 Benchmark]: TraceAbstraction took 127443.58ms. Allocated memory was 88.1MB in the beginning and 144.7MB in the end (delta: 56.6MB). Free memory was 65.7MB in the beginning and 37.2MB in the end (delta: 28.5MB). Peak memory consumption was 86.5MB. Max. memory is 16.1GB. [2022-11-23 16:10:05,060 INFO L158 Benchmark]: Witness Printer took 97.91ms. Allocated memory is still 144.7MB. Free memory was 37.2MB in the beginning and 112.7MB in the end (delta: -75.5MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2022-11-23 16:10:05,064 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 88.1MB. Free memory was 65.5MB in the beginning and 65.4MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 338.40ms. Allocated memory is still 88.1MB. Free memory was 65.2MB in the beginning and 54.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.53ms. Allocated memory is still 88.1MB. Free memory was 54.4MB in the beginning and 52.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.80ms. Allocated memory is still 88.1MB. Free memory was 52.6MB in the beginning and 51.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 509.00ms. Allocated memory is still 88.1MB. Free memory was 51.3MB in the beginning and 66.2MB in the end (delta: -15.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 127443.58ms. Allocated memory was 88.1MB in the beginning and 144.7MB in the end (delta: 56.6MB). Free memory was 65.7MB in the beginning and 37.2MB in the end (delta: 28.5MB). Peak memory consumption was 86.5MB. Max. memory is 16.1GB. * Witness Printer took 97.91ms. Allocated memory is still 144.7MB. Free memory was 37.2MB in the beginning and 112.7MB in the end (delta: -75.5MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 21]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 32); [L30] const SORT_2 msb_SORT_2 = (SORT_2)1 << (32 - 1); [L32] const SORT_2 var_4 = 0; [L33] const SORT_2 var_9 = 1; [L34] const SORT_2 var_16 = 3; [L36] SORT_1 input_3; [L38] SORT_2 state_5 = __VERIFIER_nondet_uint() & mask_SORT_2; [L39] SORT_2 state_6 = __VERIFIER_nondet_uint() & mask_SORT_2; [L41] SORT_2 init_7_arg_1 = var_4; [L42] state_5 = init_7_arg_1 [L43] SORT_2 init_8_arg_1 = var_4; [L44] state_6 = init_8_arg_1 VAL [init_7_arg_1=0, init_8_arg_1=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, state_5=0, state_6=0, var_16=3, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [cond=1, unknown-#in~cond-unknown=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=1, next_15_arg_1=0, state_5=1, state_6=0, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=1, var_13=0, var_13_arg_0=1, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [cond=1, unknown-#in~cond-unknown=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=2, next_15_arg_1=0, state_5=2, state_6=0, var_10=2, var_10_arg_0=1, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=2, var_12_arg_0=0, var_12_arg_1=1, var_12_arg_2=2, var_13=0, var_13_arg_0=1, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [cond=1, unknown-#in~cond-unknown=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=3, next_15_arg_1=0, state_5=3, state_6=0, var_10=3, var_10_arg_0=2, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=3, var_12_arg_0=0, var_12_arg_1=2, var_12_arg_2=3, var_13=0, var_13_arg_0=1, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [cond=1, unknown-#in~cond-unknown=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=3, next_15_arg_1=1, state_5=3, state_6=1, var_10=4, var_10_arg_0=3, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=3, var_12_arg_0=1, var_12_arg_1=3, var_12_arg_2=4, var_13=1, var_13_arg_0=0, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=1, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=1, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [cond=1, unknown-#in~cond-unknown=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=3, next_15_arg_1=2, state_5=3, state_6=2, var_10=4, var_10_arg_0=3, var_10_arg_1=1, var_11=2, var_11_arg_0=1, var_11_arg_1=1, var_12=3, var_12_arg_0=1, var_12_arg_1=3, var_12_arg_2=4, var_13=2, var_13_arg_0=0, var_13_arg_1=1, var_13_arg_2=2, var_16=3, var_17=1, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=3, var_19=0, var_19_arg_0=1, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [cond=1, unknown-#in~cond-unknown=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=3, next_15_arg_1=3, state_5=3, state_6=3, var_10=4, var_10_arg_0=3, var_10_arg_1=1, var_11=3, var_11_arg_0=2, var_11_arg_1=1, var_12=3, var_12_arg_0=1, var_12_arg_1=3, var_12_arg_2=4, var_13=3, var_13_arg_0=0, var_13_arg_1=2, var_13_arg_2=3, var_16=3, var_17=1, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=2, var_18_arg_1=3, var_19=0, var_19_arg_0=1, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND TRUE !(cond) VAL [cond=0, unknown-#in~cond-unknown=0] [L21] reach_error() VAL [cond=0, unknown-#in~cond-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 127.3s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 29.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 159 SdHoareTripleChecker+Valid, 7.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 159 mSDsluCounter, 133 SdHoareTripleChecker+Invalid, 7.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 116 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 194 IncrementalHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 17 mSDtfsCounter, 194 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 242 GetRequests, 137 SyntacticMatches, 24 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 67.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=4, InterpolantAutomatonStates: 41, 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, 10 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 93.5s InterpolantComputationTime, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 220 ConstructedInterpolants, 74 QuantifiedInterpolants, 24087 SizeOfPredicates, 559 NumberOfNonLiveVariables, 1058 ConjunctsInSsa, 578 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 0/258 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! [2022-11-23 16:10:05,291 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-23 16:10:05,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a360fdaa-cab4-468d-8882-7b307a2bad1f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 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