./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f9eb6f5ed10e87bb24b60ecc008ae0f7d927414b72cef44f169022f555bf831 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:08:13,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:08:13,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:08:13,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:08:13,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:08:13,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:08:13,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:08:13,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:08:13,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:08:13,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:08:13,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:08:13,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:08:13,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:08:13,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:08:13,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:08:13,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:08:13,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:08:13,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:08:13,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:08:13,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:08:13,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:08:13,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:08:13,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:08:13,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:08:13,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:08:13,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:08:13,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:08:13,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:08:13,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:08:13,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:08:13,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:08:13,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:08:13,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:08:13,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:08:13,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:08:13,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:08:13,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:08:13,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:08:13,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:08:13,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:08:13,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:08:13,165 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 20:08:13,190 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:08:13,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:08:13,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:08:13,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:08:13,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:08:13,192 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:08:13,192 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:08:13,192 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:08:13,193 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:08:13,193 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:08:13,193 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:08:13,193 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:08:13,194 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:08:13,194 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:08:13,194 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:08:13,194 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:08:13,194 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:08:13,195 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:08:13,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:08:13,196 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:08:13,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:08:13,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:08:13,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:08:13,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:08:13,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:08:13,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:08:13,197 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:08:13,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:08:13,198 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:08:13,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:08:13,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:08:13,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:08:13,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:08:13,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:08:13,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:08:13,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:08:13,200 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:08:13,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:08:13,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:08:13,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:08:13,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:08:13,201 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f9eb6f5ed10e87bb24b60ecc008ae0f7d927414b72cef44f169022f555bf831 [2021-11-25 20:08:13,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:08:13,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:08:13,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:08:13,483 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:08:13,484 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:08:13,485 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound1.c [2021-11-25 20:08:13,552 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/data/51e560a53/5e754dedf0924717bba7d0d47a042f15/FLAG1f7cb14f5 [2021-11-25 20:08:14,005 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:08:14,006 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound1.c [2021-11-25 20:08:14,020 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/data/51e560a53/5e754dedf0924717bba7d0d47a042f15/FLAG1f7cb14f5 [2021-11-25 20:08:14,519 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/data/51e560a53/5e754dedf0924717bba7d0d47a042f15 [2021-11-25 20:08:14,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:08:14,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:08:14,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:08:14,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:08:14,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:08:14,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:08:14" (1/1) ... [2021-11-25 20:08:14,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7042200e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:14, skipping insertion in model container [2021-11-25 20:08:14,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:08:14" (1/1) ... [2021-11-25 20:08:14,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:08:14,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:08:14,718 WARN L230 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_b36b5bbc-e34c-4587-8858-fa6467d5be00/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound1.c[525,538] [2021-11-25 20:08:14,729 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:08:14,736 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:08:14,746 WARN L230 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_b36b5bbc-e34c-4587-8858-fa6467d5be00/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound1.c[525,538] [2021-11-25 20:08:14,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:08:14,760 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:08:14,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:14 WrapperNode [2021-11-25 20:08:14,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:08:14,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:08:14,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:08:14,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:08:14,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:14" (1/1) ... [2021-11-25 20:08:14,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:14" (1/1) ... [2021-11-25 20:08:14,803 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2021-11-25 20:08:14,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:08:14,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:08:14,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:08:14,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:08:14,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:14" (1/1) ... [2021-11-25 20:08:14,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:14" (1/1) ... [2021-11-25 20:08:14,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:14" (1/1) ... [2021-11-25 20:08:14,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:14" (1/1) ... [2021-11-25 20:08:14,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:14" (1/1) ... [2021-11-25 20:08:14,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:14" (1/1) ... [2021-11-25 20:08:14,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:14" (1/1) ... [2021-11-25 20:08:14,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:08:14,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:08:14,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:08:14,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:08:14,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:14" (1/1) ... [2021-11-25 20:08:14,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:08:14,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:08:14,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:08:14,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:08:14,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:08:14,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:08:14,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:08:14,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:08:14,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 20:08:14,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 20:08:15,001 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:08:15,003 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:08:15,171 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:08:15,183 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:08:15,183 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 20:08:15,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:08:15 BoogieIcfgContainer [2021-11-25 20:08:15,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:08:15,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:08:15,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:08:15,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:08:15,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:08:14" (1/3) ... [2021-11-25 20:08:15,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e1db43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:08:15, skipping insertion in model container [2021-11-25 20:08:15,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:14" (2/3) ... [2021-11-25 20:08:15,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e1db43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:08:15, skipping insertion in model container [2021-11-25 20:08:15,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:08:15" (3/3) ... [2021-11-25 20:08:15,202 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_unwindbound1.c [2021-11-25 20:08:15,210 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:08:15,210 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:08:15,272 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:08:15,282 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:08:15,282 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:08:15,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 20:08:15,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 20:08:15,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:08:15,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 20:08:15,317 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:08:15,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:08:15,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2138246143, now seen corresponding path program 1 times [2021-11-25 20:08:15,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:08:15,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167498625] [2021-11-25 20:08:15,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:08:15,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:08:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:08:15,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:08:15,480 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:08:15,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167498625] [2021-11-25 20:08:15,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167498625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:08:15,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:08:15,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:08:15,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885306437] [2021-11-25 20:08:15,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:08:15,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 20:08:15,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:08:15,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 20:08:15,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 20:08:15,541 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:15,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:08:15,575 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2021-11-25 20:08:15,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 20:08:15,577 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 20:08:15,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:08:15,599 INFO L225 Difference]: With dead ends: 27 [2021-11-25 20:08:15,599 INFO L226 Difference]: Without dead ends: 12 [2021-11-25 20:08:15,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 20:08:15,606 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:08:15,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:08:15,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-25 20:08:15,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-25 20:08:15,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 20:08:15,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-11-25 20:08:15,640 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2021-11-25 20:08:15,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:08:15,641 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-11-25 20:08:15,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:15,641 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-11-25 20:08:15,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 20:08:15,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:08:15,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:08:15,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:08:15,643 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:08:15,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:08:15,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1461620770, now seen corresponding path program 1 times [2021-11-25 20:08:15,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:08:15,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472404042] [2021-11-25 20:08:15,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:08:15,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:08:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:08:15,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:08:15,741 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:08:15,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472404042] [2021-11-25 20:08:15,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472404042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:08:15,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:08:15,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:08:15,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135892546] [2021-11-25 20:08:15,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:08:15,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:08:15,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:08:15,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:08:15,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:08:15,746 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:15,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:08:15,770 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-11-25 20:08:15,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:08:15,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-25 20:08:15,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:08:15,771 INFO L225 Difference]: With dead ends: 21 [2021-11-25 20:08:15,772 INFO L226 Difference]: Without dead ends: 14 [2021-11-25 20:08:15,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:08:15,774 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:08:15,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:08:15,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-25 20:08:15,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-25 20:08:15,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 20:08:15,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-25 20:08:15,780 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2021-11-25 20:08:15,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:08:15,781 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-25 20:08:15,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:15,781 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-25 20:08:15,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 20:08:15,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:08:15,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:08:15,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:08:15,783 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:08:15,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:08:15,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1463408230, now seen corresponding path program 1 times [2021-11-25 20:08:15,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:08:15,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880942685] [2021-11-25 20:08:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:08:15,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:08:15,798 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:08:15,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016575983] [2021-11-25 20:08:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:08:15,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:08:15,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:08:15,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:08:15,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:08:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:08:15,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 20:08:15,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:08:15,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:08:15,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:08:15,980 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:08:15,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880942685] [2021-11-25 20:08:15,981 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:08:15,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016575983] [2021-11-25 20:08:15,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016575983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:08:15,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:08:15,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:08:15,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094334886] [2021-11-25 20:08:15,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:08:15,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:08:15,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:08:15,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:08:15,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:08:15,985 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:16,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:08:16,022 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-11-25 20:08:16,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:08:16,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-25 20:08:16,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:08:16,024 INFO L225 Difference]: With dead ends: 23 [2021-11-25 20:08:16,024 INFO L226 Difference]: Without dead ends: 20 [2021-11-25 20:08:16,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:08:16,026 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:08:16,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 38 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:08:16,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-25 20:08:16,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-25 20:08:16,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 20:08:16,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-11-25 20:08:16,033 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 7 [2021-11-25 20:08:16,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:08:16,033 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-11-25 20:08:16,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:16,034 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-11-25 20:08:16,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 20:08:16,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:08:16,035 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:08:16,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:08:16,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:08:16,248 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:08:16,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:08:16,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1726160663, now seen corresponding path program 1 times [2021-11-25 20:08:16,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:08:16,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189567416] [2021-11-25 20:08:16,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:08:16,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:08:16,262 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:08:16,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [408211008] [2021-11-25 20:08:16,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:08:16,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:08:16,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:08:16,264 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:08:16,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:08:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:08:16,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 20:08:16,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:08:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:08:16,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:08:16,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:08:16,725 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:08:16,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189567416] [2021-11-25 20:08:16,725 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:08:16,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408211008] [2021-11-25 20:08:16,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408211008] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:08:16,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1402673237] [2021-11-25 20:08:16,746 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-25 20:08:16,746 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:08:16,750 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:08:16,756 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:08:16,756 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:08:17,243 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 81 for LOIs [2021-11-25 20:08:17,630 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:08:19,034 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '297#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= ~counter~0 2))' at error location [2021-11-25 20:08:19,035 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:08:19,035 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:08:19,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-11-25 20:08:19,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178191114] [2021-11-25 20:08:19,035 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 20:08:19,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 20:08:19,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:08:19,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 20:08:19,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-25 20:08:19,037 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 20:08:19,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:08:19,126 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2021-11-25 20:08:19,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:08:19,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-25 20:08:19,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:08:19,127 INFO L225 Difference]: With dead ends: 25 [2021-11-25 20:08:19,127 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 20:08:19,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-11-25 20:08:19,129 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:08:19,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 45 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:08:19,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 20:08:19,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 20:08:19,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:19,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 20:08:19,131 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-11-25 20:08:19,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:08:19,132 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 20:08:19,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 20:08:19,132 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 20:08:19,132 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 20:08:19,135 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 20:08:19,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-25 20:08:19,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:08:19,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 20:08:19,403 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 20:08:19,403 INFO L861 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: true [2021-11-25 20:08:19,403 INFO L858 garLoopResultBuilder]: For program point L34-1(lines 34 43) no Hoare annotation was computed. [2021-11-25 20:08:19,403 INFO L854 garLoopResultBuilder]: At program point L34-3(lines 34 43) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1)) [2021-11-25 20:08:19,403 INFO L854 garLoopResultBuilder]: At program point L34-4(lines 34 43) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1)) [2021-11-25 20:08:19,403 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 20:08:19,404 INFO L854 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1)) [2021-11-25 20:08:19,404 INFO L858 garLoopResultBuilder]: For program point L35-1(lines 34 43) no Hoare annotation was computed. [2021-11-25 20:08:19,404 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-11-25 20:08:19,404 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-11-25 20:08:19,404 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2021-11-25 20:08:19,404 INFO L858 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2021-11-25 20:08:19,404 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2021-11-25 20:08:19,405 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-25 20:08:19,408 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-25 20:08:19,409 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 20:08:19,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:08:19 BoogieIcfgContainer [2021-11-25 20:08:19,423 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 20:08:19,424 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 20:08:19,424 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 20:08:19,424 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 20:08:19,425 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:08:15" (3/4) ... [2021-11-25 20:08:19,428 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 20:08:19,433 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-25 20:08:19,440 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-25 20:08:19,440 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-25 20:08:19,440 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-25 20:08:19,440 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 20:08:19,486 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 20:08:19,486 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 20:08:19,487 INFO L158 Benchmark]: Toolchain (without parser) took 4964.48ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 74.8MB in the beginning and 109.0MB in the end (delta: -34.1MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2021-11-25 20:08:19,488 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 115.3MB. Free memory is still 91.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:08:19,488 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.36ms. Allocated memory is still 115.3MB. Free memory was 74.6MB in the beginning and 89.6MB in the end (delta: -15.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 20:08:19,489 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.69ms. Allocated memory is still 115.3MB. Free memory was 89.6MB in the beginning and 88.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:08:19,489 INFO L158 Benchmark]: Boogie Preprocessor took 37.26ms. Allocated memory is still 115.3MB. Free memory was 88.2MB in the beginning and 87.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 20:08:19,490 INFO L158 Benchmark]: RCFGBuilder took 341.69ms. Allocated memory is still 115.3MB. Free memory was 87.1MB in the beginning and 77.8MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 20:08:19,490 INFO L158 Benchmark]: TraceAbstraction took 4227.84ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 77.4MB in the beginning and 111.1MB in the end (delta: -33.6MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2021-11-25 20:08:19,491 INFO L158 Benchmark]: Witness Printer took 62.92ms. Allocated memory is still 157.3MB. Free memory was 111.1MB in the beginning and 109.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 20:08:19,494 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 115.3MB. Free memory is still 91.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 231.36ms. Allocated memory is still 115.3MB. Free memory was 74.6MB in the beginning and 89.6MB in the end (delta: -15.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.69ms. Allocated memory is still 115.3MB. Free memory was 89.6MB in the beginning and 88.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.26ms. Allocated memory is still 115.3MB. Free memory was 88.2MB in the beginning and 87.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 341.69ms. Allocated memory is still 115.3MB. Free memory was 87.1MB in the beginning and 77.8MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4227.84ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 77.4MB in the beginning and 111.1MB in the end (delta: -33.6MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * Witness Printer took 62.92ms. Allocated memory is still 157.3MB. Free memory was 111.1MB in the beginning and 109.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.1s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 129 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 88 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 65 IncrementalHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 45 mSDtfsCounter, 65 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, InterpolantAutomatonStates: 18, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 13 PreInvPairs, 23 NumberOfFragments, 35 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 54 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 181 SizeOfPredicates, 3 NumberOfNonLiveVariables, 123 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 4/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: y * z + x == x * z + 1 RESULT: Ultimate proved your program to be correct! [2021-11-25 20:08:19,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36b5bbc-e34c-4587-8858-fa6467d5be00/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE