./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_7.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_0aeaacb6-42a8-4ac2-acf8-5cd388c65a48/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeaacb6-42a8-4ac2-acf8-5cd388c65a48/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeaacb6-42a8-4ac2-acf8-5cd388c65a48/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeaacb6-42a8-4ac2-acf8-5cd388c65a48/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/locks/test_locks_7.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeaacb6-42a8-4ac2-acf8-5cd388c65a48/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeaacb6-42a8-4ac2-acf8-5cd388c65a48/bin/utaipan-Xvt2sAort0 --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 05c715fd95d2209519e9aa0425ca71b72050ac0ff5d332c8a9deb8ead8471230 --- 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-e04fb08 [2022-11-16 19:45:26,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:45:26,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:45:26,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:45:26,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:45:26,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:45:26,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:45:26,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:45:26,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:45:26,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:45:26,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:45:26,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:45:26,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:45:26,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:45:26,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:45:26,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:45:26,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:45:26,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:45:26,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:45:26,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:45:26,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:45:26,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:45:26,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:45:26,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:45:26,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:45:26,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:45:26,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:45:26,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:45:26,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:45:26,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:45:26,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:45:26,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:45:26,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:45:26,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:45:26,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:45:26,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:45:26,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:45:26,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:45:26,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:45:26,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:45:26,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:45:26,948 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeaacb6-42a8-4ac2-acf8-5cd388c65a48/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 19:45:26,987 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:45:26,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:45:26,988 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:45:26,988 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:45:26,989 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:45:26,989 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:45:26,990 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:45:26,990 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:45:26,990 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:45:26,990 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:45:26,991 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:45:26,992 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:45:26,992 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:45:26,992 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:45:26,992 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:45:26,993 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:45:26,993 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:45:26,993 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:45:26,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:45:26,994 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:45:26,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:45:26,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:45:26,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:45:26,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:45:26,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:45:26,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:45:26,995 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:45:26,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:45:26,997 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:45:26,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:45:26,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:45:26,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:45:26,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:45:26,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:45:26,999 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:45:26,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:45:26,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:45:27,000 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:45:27,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:45:27,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:45:27,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:45:27,001 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_0aeaacb6-42a8-4ac2-acf8-5cd388c65a48/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeaacb6-42a8-4ac2-acf8-5cd388c65a48/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05c715fd95d2209519e9aa0425ca71b72050ac0ff5d332c8a9deb8ead8471230 [2022-11-16 19:45:27,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:45:27,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:45:27,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:45:27,335 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:45:27,336 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:45:27,337 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeaacb6-42a8-4ac2-acf8-5cd388c65a48/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/locks/test_locks_7.c [2022-11-16 19:45:27,430 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeaacb6-42a8-4ac2-acf8-5cd388c65a48/bin/utaipan-Xvt2sAort0/data/75adafddd/2e606d48d5a24ee0a5736e51ad6ea19a/FLAG47efbffc1 [2022-11-16 19:45:27,908 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:45:27,909 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeaacb6-42a8-4ac2-acf8-5cd388c65a48/sv-benchmarks/c/locks/test_locks_7.c [2022-11-16 19:45:27,924 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeaacb6-42a8-4ac2-acf8-5cd388c65a48/bin/utaipan-Xvt2sAort0/data/75adafddd/2e606d48d5a24ee0a5736e51ad6ea19a/FLAG47efbffc1 [2022-11-16 19:45:28,288 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeaacb6-42a8-4ac2-acf8-5cd388c65a48/bin/utaipan-Xvt2sAort0/data/75adafddd/2e606d48d5a24ee0a5736e51ad6ea19a [2022-11-16 19:45:28,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:45:28,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:45:28,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:45:28,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:45:28,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:45:28,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:45:28" (1/1) ... [2022-11-16 19:45:28,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b589cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:28, skipping insertion in model container [2022-11-16 19:45:28,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:45:28" (1/1) ... [2022-11-16 19:45:28,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:45:28,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:45:28,527 WARN L229 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_0aeaacb6-42a8-4ac2-acf8-5cd388c65a48/sv-benchmarks/c/locks/test_locks_7.c[2881,2894] [2022-11-16 19:45:28,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:45:28,539 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:45:28,557 WARN L229 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_0aeaacb6-42a8-4ac2-acf8-5cd388c65a48/sv-benchmarks/c/locks/test_locks_7.c[2881,2894] [2022-11-16 19:45:28,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:45:28,570 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:45:28,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:28 WrapperNode [2022-11-16 19:45:28,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:45:28,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:45:28,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:45:28,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:45:28,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:28" (1/1) ... [2022-11-16 19:45:28,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:28" (1/1) ... [2022-11-16 19:45:28,606 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 105 [2022-11-16 19:45:28,606 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:45:28,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:45:28,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:45:28,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:45:28,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:28" (1/1) ... [2022-11-16 19:45:28,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:28" (1/1) ... [2022-11-16 19:45:28,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:28" (1/1) ... [2022-11-16 19:45:28,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:28" (1/1) ... [2022-11-16 19:45:28,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:28" (1/1) ... [2022-11-16 19:45:28,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:28" (1/1) ... [2022-11-16 19:45:28,629 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:28" (1/1) ... [2022-11-16 19:45:28,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:28" (1/1) ... [2022-11-16 19:45:28,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:45:28,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:45:28,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:45:28,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:45:28,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:28" (1/1) ... [2022-11-16 19:45:28,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:45:28,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeaacb6-42a8-4ac2-acf8-5cd388c65a48/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:45:28,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeaacb6-42a8-4ac2-acf8-5cd388c65a48/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:45:28,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeaacb6-42a8-4ac2-acf8-5cd388c65a48/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:45:28,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:45:28,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:45:28,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:45:28,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:45:28,775 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:45:28,777 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:45:28,971 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:45:29,142 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:45:29,142 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 19:45:29,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:45:29 BoogieIcfgContainer [2022-11-16 19:45:29,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:45:29,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:45:29,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:45:29,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:45:29,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:45:28" (1/3) ... [2022-11-16 19:45:29,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54865ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:45:29, skipping insertion in model container [2022-11-16 19:45:29,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:45:28" (2/3) ... [2022-11-16 19:45:29,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54865ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:45:29, skipping insertion in model container [2022-11-16 19:45:29,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:45:29" (3/3) ... [2022-11-16 19:45:29,166 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_7.c [2022-11-16 19:45:29,187 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:45:29,187 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 19:45:29,242 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:45:29,249 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;@446ecc21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:45:29,249 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 19:45:29,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.85) internal successors, (37), 21 states have internal predecessors, (37), 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) [2022-11-16 19:45:29,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 19:45:29,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:29,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 19:45:29,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:29,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:29,266 INFO L85 PathProgramCache]: Analyzing trace with hash 787408259, now seen corresponding path program 1 times [2022-11-16 19:45:29,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:45:29,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141135574] [2022-11-16 19:45:29,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:29,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:45:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:29,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:45:29,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:45:29,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141135574] [2022-11-16 19:45:29,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141135574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:45:29,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:45:29,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:45:29,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069735033] [2022-11-16 19:45:29,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:45:29,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:45:29,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:45:29,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:45:29,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:45:29,721 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.85) internal successors, (37), 21 states have internal predecessors, (37), 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 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:45:29,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:45:29,772 INFO L93 Difference]: Finished difference Result 46 states and 73 transitions. [2022-11-16 19:45:29,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:45:29,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 19:45:29,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:45:29,789 INFO L225 Difference]: With dead ends: 46 [2022-11-16 19:45:29,789 INFO L226 Difference]: Without dead ends: 35 [2022-11-16 19:45:29,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:45:29,799 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 31 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:45:29,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 87 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:45:29,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-16 19:45:29,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 19. [2022-11-16 19:45:29,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 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) [2022-11-16 19:45:29,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 31 transitions. [2022-11-16 19:45:29,839 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 31 transitions. Word has length 6 [2022-11-16 19:45:29,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:29,840 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 31 transitions. [2022-11-16 19:45:29,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:45:29,840 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 31 transitions. [2022-11-16 19:45:29,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 19:45:29,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:29,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:45:29,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 19:45:29,841 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:29,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:29,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1359933427, now seen corresponding path program 1 times [2022-11-16 19:45:29,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:45:29,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094627294] [2022-11-16 19:45:29,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:29,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:45:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:29,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:45:29,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:45:29,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094627294] [2022-11-16 19:45:29,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094627294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:45:29,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:45:29,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:45:29,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647327499] [2022-11-16 19:45:29,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:45:29,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:45:29,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:45:29,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:45:29,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:45:29,998 INFO L87 Difference]: Start difference. First operand 19 states and 31 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-11-16 19:45:30,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:45:30,023 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2022-11-16 19:45:30,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:45:30,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 19:45:30,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:45:30,025 INFO L225 Difference]: With dead ends: 35 [2022-11-16 19:45:30,025 INFO L226 Difference]: Without dead ends: 33 [2022-11-16 19:45:30,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:45:30,027 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 26 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:45:30,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 74 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:45:30,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-16 19:45:30,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 19. [2022-11-16 19:45:30,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 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) [2022-11-16 19:45:30,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2022-11-16 19:45:30,033 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 30 transitions. Word has length 7 [2022-11-16 19:45:30,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:30,033 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 30 transitions. [2022-11-16 19:45:30,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-11-16 19:45:30,034 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 30 transitions. [2022-11-16 19:45:30,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 19:45:30,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:30,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:45:30,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 19:45:30,035 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:30,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:30,036 INFO L85 PathProgramCache]: Analyzing trace with hash 791951384, now seen corresponding path program 1 times [2022-11-16 19:45:30,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:45:30,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672631852] [2022-11-16 19:45:30,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:30,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:45:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:45:30,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:45:30,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672631852] [2022-11-16 19:45:30,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672631852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:45:30,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:45:30,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:45:30,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525614833] [2022-11-16 19:45:30,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:45:30,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:45:30,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:45:30,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:45:30,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:45:30,103 INFO L87 Difference]: Start difference. First operand 19 states and 30 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2022-11-16 19:45:30,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:45:30,125 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2022-11-16 19:45:30,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:45:30,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) Word has length 8 [2022-11-16 19:45:30,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:45:30,126 INFO L225 Difference]: With dead ends: 33 [2022-11-16 19:45:30,126 INFO L226 Difference]: Without dead ends: 31 [2022-11-16 19:45:30,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:45:30,128 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 24 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:45:30,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 68 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:45:30,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-16 19:45:30,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 19. [2022-11-16 19:45:30,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:45:30,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 29 transitions. [2022-11-16 19:45:30,133 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 29 transitions. Word has length 8 [2022-11-16 19:45:30,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:30,133 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 29 transitions. [2022-11-16 19:45:30,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2022-11-16 19:45:30,134 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 29 transitions. [2022-11-16 19:45:30,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 19:45:30,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:30,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:45:30,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 19:45:30,135 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:30,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:30,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1219095870, now seen corresponding path program 1 times [2022-11-16 19:45:30,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:45:30,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940498629] [2022-11-16 19:45:30,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:30,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:45:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:30,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:45:30,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:45:30,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940498629] [2022-11-16 19:45:30,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940498629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:45:30,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:45:30,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:45:30,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203485203] [2022-11-16 19:45:30,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:45:30,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:45:30,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:45:30,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:45:30,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:45:30,233 INFO L87 Difference]: Start difference. First operand 19 states and 29 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2022-11-16 19:45:30,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:45:30,254 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2022-11-16 19:45:30,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:45:30,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) Word has length 9 [2022-11-16 19:45:30,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:45:30,256 INFO L225 Difference]: With dead ends: 31 [2022-11-16 19:45:30,256 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 19:45:30,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:45:30,258 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 22 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:45:30,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 62 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:45:30,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 19:45:30,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 19. [2022-11-16 19:45:30,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 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) [2022-11-16 19:45:30,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 28 transitions. [2022-11-16 19:45:30,262 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 28 transitions. Word has length 9 [2022-11-16 19:45:30,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:30,263 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 28 transitions. [2022-11-16 19:45:30,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2022-11-16 19:45:30,263 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 28 transitions. [2022-11-16 19:45:30,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 19:45:30,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:30,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:45:30,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 19:45:30,264 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:30,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:30,265 INFO L85 PathProgramCache]: Analyzing trace with hash 862949037, now seen corresponding path program 1 times [2022-11-16 19:45:30,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:45:30,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875445584] [2022-11-16 19:45:30,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:30,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:45:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:30,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:45:30,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:45:30,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875445584] [2022-11-16 19:45:30,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875445584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:45:30,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:45:30,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:45:30,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147212405] [2022-11-16 19:45:30,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:45:30,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:45:30,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:45:30,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:45:30,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:45:30,330 INFO L87 Difference]: Start difference. First operand 19 states and 28 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-16 19:45:30,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:45:30,349 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions. [2022-11-16 19:45:30,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:45:30,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2022-11-16 19:45:30,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:45:30,350 INFO L225 Difference]: With dead ends: 29 [2022-11-16 19:45:30,351 INFO L226 Difference]: Without dead ends: 27 [2022-11-16 19:45:30,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:45:30,352 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 20 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:45:30,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 55 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:45:30,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-16 19:45:30,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2022-11-16 19:45:30,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 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) [2022-11-16 19:45:30,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2022-11-16 19:45:30,357 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 27 transitions. Word has length 10 [2022-11-16 19:45:30,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:30,358 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 27 transitions. [2022-11-16 19:45:30,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-16 19:45:30,358 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 27 transitions. [2022-11-16 19:45:30,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 19:45:30,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:30,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:45:30,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 19:45:30,360 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:30,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:30,360 INFO L85 PathProgramCache]: Analyzing trace with hash 981832055, now seen corresponding path program 1 times [2022-11-16 19:45:30,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:45:30,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646543293] [2022-11-16 19:45:30,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:30,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:45:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:45:30,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:45:30,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646543293] [2022-11-16 19:45:30,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646543293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:45:30,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:45:30,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:45:30,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830792409] [2022-11-16 19:45:30,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:45:30,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:45:30,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:45:30,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:45:30,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:45:30,456 INFO L87 Difference]: Start difference. First operand 19 states and 27 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:45:30,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:45:30,490 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2022-11-16 19:45:30,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:45:30,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 19:45:30,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:45:30,492 INFO L225 Difference]: With dead ends: 27 [2022-11-16 19:45:30,493 INFO L226 Difference]: Without dead ends: 25 [2022-11-16 19:45:30,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:45:30,495 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 18 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:45:30,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 49 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:45:30,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-16 19:45:30,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2022-11-16 19:45:30,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 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) [2022-11-16 19:45:30,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2022-11-16 19:45:30,511 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 26 transitions. Word has length 11 [2022-11-16 19:45:30,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:30,512 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 26 transitions. [2022-11-16 19:45:30,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:45:30,512 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2022-11-16 19:45:30,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 19:45:30,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:30,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:45:30,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 19:45:30,514 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:30,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:30,515 INFO L85 PathProgramCache]: Analyzing trace with hash 372238658, now seen corresponding path program 1 times [2022-11-16 19:45:30,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:45:30,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707754069] [2022-11-16 19:45:30,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:30,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:45:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:45:30,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:45:30,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707754069] [2022-11-16 19:45:30,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707754069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:45:30,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:45:30,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:45:30,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455905500] [2022-11-16 19:45:30,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:45:30,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:45:30,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:45:30,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:45:30,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:45:30,603 INFO L87 Difference]: Start difference. First operand 19 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:45:30,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:45:30,631 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2022-11-16 19:45:30,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:45:30,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-16 19:45:30,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:45:30,632 INFO L225 Difference]: With dead ends: 21 [2022-11-16 19:45:30,632 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 19:45:30,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:45:30,639 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:45:30,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 40 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:45:30,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 19:45:30,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 19:45:30,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:45:30,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 19:45:30,645 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-11-16 19:45:30,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:30,645 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 19:45:30,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:45:30,646 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 19:45:30,646 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 19:45:30,649 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 19:45:30,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 19:45:30,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 19:45:30,663 INFO L899 garLoopResultBuilder]: For program point L93-1(lines 32 118) no Hoare annotation was computed. [2022-11-16 19:45:30,664 INFO L899 garLoopResultBuilder]: For program point L77-1(lines 32 118) no Hoare annotation was computed. [2022-11-16 19:45:30,664 INFO L899 garLoopResultBuilder]: For program point L94(line 94) no Hoare annotation was computed. [2022-11-16 19:45:30,664 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-16 19:45:30,664 INFO L902 garLoopResultBuilder]: At program point L119(lines 7 123) the Hoare annotation is: true [2022-11-16 19:45:30,665 INFO L899 garLoopResultBuilder]: For program point L103-1(lines 32 118) no Hoare annotation was computed. [2022-11-16 19:45:30,665 INFO L899 garLoopResultBuilder]: For program point L104(line 104) no Hoare annotation was computed. [2022-11-16 19:45:30,665 INFO L899 garLoopResultBuilder]: For program point L88-1(lines 32 118) no Hoare annotation was computed. [2022-11-16 19:45:30,665 INFO L902 garLoopResultBuilder]: At program point L113-1(lines 32 118) the Hoare annotation is: true [2022-11-16 19:45:30,665 INFO L902 garLoopResultBuilder]: At program point L122(lines 6 123) the Hoare annotation is: true [2022-11-16 19:45:30,666 INFO L899 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2022-11-16 19:45:30,666 INFO L899 garLoopResultBuilder]: For program point L114(line 114) no Hoare annotation was computed. [2022-11-16 19:45:30,666 INFO L895 garLoopResultBuilder]: At program point L114-1(lines 7 123) the Hoare annotation is: false [2022-11-16 19:45:30,666 INFO L899 garLoopResultBuilder]: For program point L98-1(lines 32 118) no Hoare annotation was computed. [2022-11-16 19:45:30,666 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 121) no Hoare annotation was computed. [2022-11-16 19:45:30,667 INFO L899 garLoopResultBuilder]: For program point L99(line 99) no Hoare annotation was computed. [2022-11-16 19:45:30,667 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 19:45:30,667 INFO L899 garLoopResultBuilder]: For program point L83-1(lines 32 118) no Hoare annotation was computed. [2022-11-16 19:45:30,667 INFO L899 garLoopResultBuilder]: For program point L108-1(lines 32 118) no Hoare annotation was computed. [2022-11-16 19:45:30,667 INFO L899 garLoopResultBuilder]: For program point L34(lines 34 36) no Hoare annotation was computed. [2022-11-16 19:45:30,668 INFO L899 garLoopResultBuilder]: For program point L84(line 84) no Hoare annotation was computed. [2022-11-16 19:45:30,668 INFO L899 garLoopResultBuilder]: For program point L109(line 109) no Hoare annotation was computed. [2022-11-16 19:45:30,672 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:45:30,675 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 19:45:30,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 07:45:30 BoogieIcfgContainer [2022-11-16 19:45:30,686 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 19:45:30,688 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 19:45:30,691 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 19:45:30,692 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 19:45:30,693 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:45:29" (3/4) ... [2022-11-16 19:45:30,697 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 19:45:30,712 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-16 19:45:30,713 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-16 19:45:30,715 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 19:45:30,715 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 19:45:30,774 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeaacb6-42a8-4ac2-acf8-5cd388c65a48/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 19:45:30,780 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 19:45:30,781 INFO L158 Benchmark]: Toolchain (without parser) took 2485.67ms. Allocated memory was 111.1MB in the beginning and 140.5MB in the end (delta: 29.4MB). Free memory was 79.4MB in the beginning and 106.2MB in the end (delta: -26.8MB). Peak memory consumption was 2.0MB. Max. memory is 16.1GB. [2022-11-16 19:45:30,781 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 81.8MB. Free memory was 32.3MB in the beginning and 32.2MB in the end (delta: 91.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 19:45:30,782 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.58ms. Allocated memory is still 111.1MB. Free memory was 79.1MB in the beginning and 87.0MB in the end (delta: -7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 19:45:30,782 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.85ms. Allocated memory is still 111.1MB. Free memory was 87.0MB in the beginning and 85.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 19:45:30,783 INFO L158 Benchmark]: Boogie Preprocessor took 25.65ms. Allocated memory is still 111.1MB. Free memory was 85.3MB in the beginning and 84.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 19:45:30,783 INFO L158 Benchmark]: RCFGBuilder took 521.68ms. Allocated memory is still 111.1MB. Free memory was 84.1MB in the beginning and 66.2MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-16 19:45:30,784 INFO L158 Benchmark]: TraceAbstraction took 1529.18ms. Allocated memory was 111.1MB in the beginning and 140.5MB in the end (delta: 29.4MB). Free memory was 65.6MB in the beginning and 109.6MB in the end (delta: -44.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 19:45:30,784 INFO L158 Benchmark]: Witness Printer took 92.51ms. Allocated memory is still 140.5MB. Free memory was 109.6MB in the beginning and 106.2MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 19:45:30,787 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 81.8MB. Free memory was 32.3MB in the beginning and 32.2MB in the end (delta: 91.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.58ms. Allocated memory is still 111.1MB. Free memory was 79.1MB in the beginning and 87.0MB in the end (delta: -7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.85ms. Allocated memory is still 111.1MB. Free memory was 87.0MB in the beginning and 85.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.65ms. Allocated memory is still 111.1MB. Free memory was 85.3MB in the beginning and 84.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 521.68ms. Allocated memory is still 111.1MB. Free memory was 84.1MB in the beginning and 66.2MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1529.18ms. Allocated memory was 111.1MB in the beginning and 140.5MB in the end (delta: 29.4MB). Free memory was 65.6MB in the beginning and 109.6MB in the end (delta: -44.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 92.51ms. Allocated memory is still 140.5MB. Free memory was 109.6MB in the beginning and 106.2MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. 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: 121]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 156 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 156 mSDsluCounter, 435 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 264 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 87 IncrementalHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 171 mSDtfsCounter, 87 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 28, 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, 7 MinimizatonAttempts, 66 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 9 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 238 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-16 19:45:30,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aeaacb6-42a8-4ac2-acf8-5cd388c65a48/bin/utaipan-Xvt2sAort0/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