./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf --- 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-2329fc7 [2022-12-13 17:06:02,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:06:02,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:06:02,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:06:02,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:06:02,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:06:02,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:06:02,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:06:02,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:06:02,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:06:02,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:06:02,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:06:02,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:06:02,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:06:02,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:06:02,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:06:02,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:06:02,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:06:02,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:06:02,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:06:02,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:06:02,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:06:02,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:06:02,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:06:02,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:06:02,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:06:02,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:06:02,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:06:02,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:06:02,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:06:02,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:06:02,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:06:02,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:06:02,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:06:02,934 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:06:02,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:06:02,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:06:02,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:06:02,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:06:02,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:06:02,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:06:02,937 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 17:06:02,956 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:06:02,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:06:02,956 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:06:02,956 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:06:02,957 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:06:02,957 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:06:02,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:06:02,958 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:06:02,958 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:06:02,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:06:02,958 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:06:02,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:06:02,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:06:02,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:06:02,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:06:02,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:06:02,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:06:02,959 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:06:02,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:06:02,960 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:06:02,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:06:02,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:06:02,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:06:02,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:06:02,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:06:02,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:06:02,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:06:02,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:06:02,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:06:02,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:06:02,961 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:06:02,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:06:02,962 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:06:02,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:06:02,962 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:06:02,962 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf [2022-12-13 17:06:03,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:06:03,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:06:03,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:06:03,182 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:06:03,182 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:06:03,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2022-12-13 17:06:05,765 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:06:06,027 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:06:06,028 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2022-12-13 17:06:06,043 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/data/4e314e9f5/c9518121a00a47a0b7a91242ad1c7905/FLAGcb4cd6c67 [2022-12-13 17:06:06,056 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/data/4e314e9f5/c9518121a00a47a0b7a91242ad1c7905 [2022-12-13 17:06:06,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:06:06,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:06:06,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:06:06,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:06:06,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:06:06,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:06:06" (1/1) ... [2022-12-13 17:06:06,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a64ae2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:06:06, skipping insertion in model container [2022-12-13 17:06:06,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:06:06" (1/1) ... [2022-12-13 17:06:06,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:06:06,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:06:06,492 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2022-12-13 17:06:06,501 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2022-12-13 17:06:06,502 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 17:06:06,578 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2022-12-13 17:06:06,579 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2022-12-13 17:06:06,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:06:06,597 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:06:06,621 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2022-12-13 17:06:06,622 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2022-12-13 17:06:06,623 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 17:06:06,665 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2022-12-13 17:06:06,666 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2022-12-13 17:06:06,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:06:06,727 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:06:06,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:06:06 WrapperNode [2022-12-13 17:06:06,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:06:06,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:06:06,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:06:06,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:06:06,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:06:06" (1/1) ... [2022-12-13 17:06:06,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:06:06" (1/1) ... [2022-12-13 17:06:06,814 INFO L138 Inliner]: procedures = 282, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1195 [2022-12-13 17:06:06,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:06:06,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:06:06,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:06:06,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:06:06,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:06:06" (1/1) ... [2022-12-13 17:06:06,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:06:06" (1/1) ... [2022-12-13 17:06:06,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:06:06" (1/1) ... [2022-12-13 17:06:06,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:06:06" (1/1) ... [2022-12-13 17:06:06,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:06:06" (1/1) ... [2022-12-13 17:06:06,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:06:06" (1/1) ... [2022-12-13 17:06:06,883 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:06:06" (1/1) ... [2022-12-13 17:06:06,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:06:06" (1/1) ... [2022-12-13 17:06:06,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:06:06,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:06:06,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:06:06,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:06:06,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:06:06" (1/1) ... [2022-12-13 17:06:06,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:06:06,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:06:06,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:06:06,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:06:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:06:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-13 17:06:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 17:06:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:06:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-12-13 17:06:06,957 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-12-13 17:06:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 17:06:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 17:06:06,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 17:06:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:06:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 17:06:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:06:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-12-13 17:06:06,957 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-12-13 17:06:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 17:06:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-12-13 17:06:06,958 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-12-13 17:06:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:06:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:06:06,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:06:07,128 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:06:07,130 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:06:08,100 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:06:08,106 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:06:08,106 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-12-13 17:06:08,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:06:08 BoogieIcfgContainer [2022-12-13 17:06:08,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:06:08,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:06:08,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:06:08,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:06:08,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:06:06" (1/3) ... [2022-12-13 17:06:08,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22376a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:06:08, skipping insertion in model container [2022-12-13 17:06:08,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:06:06" (2/3) ... [2022-12-13 17:06:08,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22376a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:06:08, skipping insertion in model container [2022-12-13 17:06:08,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:06:08" (3/3) ... [2022-12-13 17:06:08,114 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test6-2.i [2022-12-13 17:06:08,128 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:06:08,128 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-13 17:06:08,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:06:08,171 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=PETRI_NET, 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;@5a653604, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:06:08,171 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 17:06:08,175 INFO L276 IsEmpty]: Start isEmpty. Operand has 256 states, 232 states have (on average 1.6379310344827587) internal successors, (380), 236 states have internal predecessors, (380), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-13 17:06:08,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 17:06:08,180 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:08,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:06:08,181 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-13 17:06:08,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:08,185 INFO L85 PathProgramCache]: Analyzing trace with hash -927886968, now seen corresponding path program 1 times [2022-12-13 17:06:08,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:08,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992934722] [2022-12-13 17:06:08,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:08,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:08,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:06:08,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:08,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992934722] [2022-12-13 17:06:08,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992934722] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:06:08,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:06:08,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:06:08,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74464047] [2022-12-13 17:06:08,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:08,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 17:06:08,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:08,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 17:06:08,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 17:06:08,374 INFO L87 Difference]: Start difference. First operand has 256 states, 232 states have (on average 1.6379310344827587) internal successors, (380), 236 states have internal predecessors, (380), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2022-12-13 17:06:08,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:08,412 INFO L93 Difference]: Finished difference Result 507 states and 830 transitions. [2022-12-13 17:06:08,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 17:06:08,414 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 [2022-12-13 17:06:08,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:08,420 INFO L225 Difference]: With dead ends: 507 [2022-12-13 17:06:08,421 INFO L226 Difference]: Without dead ends: 249 [2022-12-13 17:06:08,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 17:06:08,426 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:08,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:06:08,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-12-13 17:06:08,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2022-12-13 17:06:08,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 226 states have (on average 1.3008849557522124) internal successors, (294), 230 states have internal predecessors, (294), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-13 17:06:08,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 324 transitions. [2022-12-13 17:06:08,466 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 324 transitions. Word has length 8 [2022-12-13 17:06:08,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:08,466 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 324 transitions. [2022-12-13 17:06:08,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-12-13 17:06:08,466 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 324 transitions. [2022-12-13 17:06:08,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 17:06:08,467 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:08,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:06:08,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:06:08,467 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-13 17:06:08,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:08,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1603506083, now seen corresponding path program 1 times [2022-12-13 17:06:08,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:08,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408929139] [2022-12-13 17:06:08,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:08,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:06:08,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:08,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408929139] [2022-12-13 17:06:08,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408929139] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:06:08,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:06:08,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:06:08,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550035857] [2022-12-13 17:06:08,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:08,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:06:08,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:08,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:06:08,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:06:08,598 INFO L87 Difference]: Start difference. First operand 249 states and 324 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) [2022-12-13 17:06:08,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:08,965 INFO L93 Difference]: Finished difference Result 545 states and 715 transitions. [2022-12-13 17:06:08,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:06:08,965 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 [2022-12-13 17:06:08,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:08,968 INFO L225 Difference]: With dead ends: 545 [2022-12-13 17:06:08,968 INFO L226 Difference]: Without dead ends: 403 [2022-12-13 17:06:08,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:06:08,971 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 180 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:08,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 861 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 17:06:08,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-12-13 17:06:08,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 251. [2022-12-13 17:06:08,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 228 states have (on average 1.2982456140350878) internal successors, (296), 232 states have internal predecessors, (296), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-13 17:06:08,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 326 transitions. [2022-12-13 17:06:08,992 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 326 transitions. Word has length 10 [2022-12-13 17:06:08,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:08,993 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 326 transitions. [2022-12-13 17:06:08,993 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) [2022-12-13 17:06:08,993 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 326 transitions. [2022-12-13 17:06:08,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-13 17:06:08,994 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:08,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:06:08,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:06:08,995 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-13 17:06:08,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:08,995 INFO L85 PathProgramCache]: Analyzing trace with hash -177796585, now seen corresponding path program 1 times [2022-12-13 17:06:08,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:08,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646425899] [2022-12-13 17:06:08,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:08,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:09,034 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:06:09,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133818887] [2022-12-13 17:06:09,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:09,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:06:09,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:06:09,036 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:06:09,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:06:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:09,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:06:09,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:06:09,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:06:09,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:06:09,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:09,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646425899] [2022-12-13 17:06:09,262 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:06:09,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133818887] [2022-12-13 17:06:09,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133818887] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:06:09,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:06:09,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:06:09,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326963831] [2022-12-13 17:06:09,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:09,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:06:09,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:09,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:06:09,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:06:09,265 INFO L87 Difference]: Start difference. First operand 251 states and 326 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:06:09,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:09,329 INFO L93 Difference]: Finished difference Result 519 states and 679 transitions. [2022-12-13 17:06:09,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:06:09,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-12-13 17:06:09,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:09,331 INFO L225 Difference]: With dead ends: 519 [2022-12-13 17:06:09,331 INFO L226 Difference]: Without dead ends: 272 [2022-12-13 17:06:09,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:06:09,333 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 9 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:09,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 593 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:06:09,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-12-13 17:06:09,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 271. [2022-12-13 17:06:09,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 248 states have (on average 1.2741935483870968) internal successors, (316), 252 states have internal predecessors, (316), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-13 17:06:09,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 346 transitions. [2022-12-13 17:06:09,344 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 346 transitions. Word has length 47 [2022-12-13 17:06:09,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:09,344 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 346 transitions. [2022-12-13 17:06:09,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:06:09,344 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 346 transitions. [2022-12-13 17:06:09,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-13 17:06:09,345 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:09,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:06:09,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:06:09,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-13 17:06:09,548 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-13 17:06:09,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:09,551 INFO L85 PathProgramCache]: Analyzing trace with hash -318345195, now seen corresponding path program 1 times [2022-12-13 17:06:09,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:09,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298295133] [2022-12-13 17:06:09,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:09,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:09,658 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:06:09,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [221408985] [2022-12-13 17:06:09,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:09,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:06:09,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:06:09,664 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:06:09,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:06:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:09,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:06:09,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:06:09,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:06:09,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:06:09,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:09,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298295133] [2022-12-13 17:06:09,877 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:06:09,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221408985] [2022-12-13 17:06:09,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221408985] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:06:09,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:06:09,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:06:09,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134492286] [2022-12-13 17:06:09,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:09,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:06:09,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:09,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:06:09,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:06:09,880 INFO L87 Difference]: Start difference. First operand 271 states and 346 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:06:09,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:09,943 INFO L93 Difference]: Finished difference Result 531 states and 681 transitions. [2022-12-13 17:06:09,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:06:09,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-12-13 17:06:09,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:09,945 INFO L225 Difference]: With dead ends: 531 [2022-12-13 17:06:09,945 INFO L226 Difference]: Without dead ends: 264 [2022-12-13 17:06:09,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:06:09,947 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 268 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:09,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 644 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:06:09,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-12-13 17:06:09,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 257. [2022-12-13 17:06:09,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 234 states have (on average 1.2606837606837606) internal successors, (295), 238 states have internal predecessors, (295), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-13 17:06:09,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 325 transitions. [2022-12-13 17:06:09,961 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 325 transitions. Word has length 47 [2022-12-13 17:06:09,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:09,962 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 325 transitions. [2022-12-13 17:06:09,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:06:09,962 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 325 transitions. [2022-12-13 17:06:09,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-13 17:06:09,963 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:09,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:06:09,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 17:06:10,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:06:10,164 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-13 17:06:10,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:10,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1111404323, now seen corresponding path program 1 times [2022-12-13 17:06:10,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:10,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20001950] [2022-12-13 17:06:10,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:10,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:10,186 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:06:10,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1443126188] [2022-12-13 17:06:10,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:10,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:06:10,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:06:10,187 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:06:10,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:06:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:11,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 17:06:11,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:06:11,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:06:11,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:06:11,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:11,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20001950] [2022-12-13 17:06:11,062 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:06:11,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443126188] [2022-12-13 17:06:11,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443126188] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:06:11,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:06:11,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 17:06:11,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815683794] [2022-12-13 17:06:11,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:11,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:06:11,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:11,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:06:11,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:06:11,064 INFO L87 Difference]: Start difference. First operand 257 states and 325 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:06:11,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:11,464 INFO L93 Difference]: Finished difference Result 270 states and 338 transitions. [2022-12-13 17:06:11,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 17:06:11,465 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-12-13 17:06:11,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:11,466 INFO L225 Difference]: With dead ends: 270 [2022-12-13 17:06:11,466 INFO L226 Difference]: Without dead ends: 268 [2022-12-13 17:06:11,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:06:11,467 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 490 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:11,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 1516 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 17:06:11,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-12-13 17:06:11,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 267. [2022-12-13 17:06:11,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 241 states have (on average 1.2572614107883817) internal successors, (303), 246 states have internal predecessors, (303), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-13 17:06:11,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 335 transitions. [2022-12-13 17:06:11,477 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 335 transitions. Word has length 47 [2022-12-13 17:06:11,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:11,477 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 335 transitions. [2022-12-13 17:06:11,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:06:11,477 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 335 transitions. [2022-12-13 17:06:11,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 17:06:11,479 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:11,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:06:11,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:06:11,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:06:11,681 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-13 17:06:11,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:11,682 INFO L85 PathProgramCache]: Analyzing trace with hash 98081523, now seen corresponding path program 1 times [2022-12-13 17:06:11,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:11,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077413291] [2022-12-13 17:06:11,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:11,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:11,779 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:06:11,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602415234] [2022-12-13 17:06:11,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:11,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:06:11,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:06:11,781 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:06:11,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:06:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:12,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 17:06:12,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:06:12,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:06:12,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:06:12,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:12,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077413291] [2022-12-13 17:06:12,192 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:06:12,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602415234] [2022-12-13 17:06:12,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602415234] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:06:12,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:06:12,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:06:12,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283054386] [2022-12-13 17:06:12,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:12,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:06:12,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:12,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:06:12,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:06:12,195 INFO L87 Difference]: Start difference. First operand 267 states and 335 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:06:12,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:12,217 INFO L93 Difference]: Finished difference Result 531 states and 668 transitions. [2022-12-13 17:06:12,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:06:12,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-12-13 17:06:12,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:12,219 INFO L225 Difference]: With dead ends: 531 [2022-12-13 17:06:12,219 INFO L226 Difference]: Without dead ends: 268 [2022-12-13 17:06:12,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:06:12,221 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 0 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:12,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 627 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:06:12,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-12-13 17:06:12,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2022-12-13 17:06:12,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 242 states have (on average 1.256198347107438) internal successors, (304), 247 states have internal predecessors, (304), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-13 17:06:12,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 336 transitions. [2022-12-13 17:06:12,234 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 336 transitions. Word has length 58 [2022-12-13 17:06:12,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:12,234 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 336 transitions. [2022-12-13 17:06:12,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:06:12,235 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 336 transitions. [2022-12-13 17:06:12,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 17:06:12,236 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:12,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:06:12,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 17:06:12,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 17:06:12,438 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-13 17:06:12,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:12,440 INFO L85 PathProgramCache]: Analyzing trace with hash 491108533, now seen corresponding path program 1 times [2022-12-13 17:06:12,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:12,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564771313] [2022-12-13 17:06:12,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:12,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:12,604 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:06:12,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107673209] [2022-12-13 17:06:12,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:12,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:06:12,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:06:12,606 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:06:12,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:06:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:13,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 17:06:13,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:06:13,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:06:13,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:06:13,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:13,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564771313] [2022-12-13 17:06:13,195 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:06:13,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107673209] [2022-12-13 17:06:13,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107673209] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:06:13,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:06:13,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:06:13,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310713146] [2022-12-13 17:06:13,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:13,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:06:13,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:13,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:06:13,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:06:13,197 INFO L87 Difference]: Start difference. First operand 268 states and 336 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:06:13,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:13,301 INFO L93 Difference]: Finished difference Result 686 states and 867 transitions. [2022-12-13 17:06:13,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:06:13,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-12-13 17:06:13,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:13,302 INFO L225 Difference]: With dead ends: 686 [2022-12-13 17:06:13,302 INFO L226 Difference]: Without dead ends: 422 [2022-12-13 17:06:13,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:06:13,303 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 142 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:13,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 628 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:06:13,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-12-13 17:06:13,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 383. [2022-12-13 17:06:13,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 354 states have (on average 1.2542372881355932) internal successors, (444), 359 states have internal predecessors, (444), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-12-13 17:06:13,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 482 transitions. [2022-12-13 17:06:13,315 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 482 transitions. Word has length 58 [2022-12-13 17:06:13,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:13,315 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 482 transitions. [2022-12-13 17:06:13,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:06:13,315 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 482 transitions. [2022-12-13 17:06:13,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-13 17:06:13,316 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:13,316 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:06:13,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 17:06:13,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 17:06:13,518 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-13 17:06:13,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:13,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1048240331, now seen corresponding path program 1 times [2022-12-13 17:06:13,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:13,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729000988] [2022-12-13 17:06:13,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:13,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:13,593 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:06:13,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772071373] [2022-12-13 17:06:13,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:13,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:06:13,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:06:13,595 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:06:13,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 17:06:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:13,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 17:06:13,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:06:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:06:13,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:06:14,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:06:14,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:14,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729000988] [2022-12-13 17:06:14,093 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:06:14,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772071373] [2022-12-13 17:06:14,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772071373] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 17:06:14,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:06:14,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 9 [2022-12-13 17:06:14,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562660390] [2022-12-13 17:06:14,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:14,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:06:14,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:14,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:06:14,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:06:14,095 INFO L87 Difference]: Start difference. First operand 383 states and 482 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 17:06:14,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:14,247 INFO L93 Difference]: Finished difference Result 1420 states and 1840 transitions. [2022-12-13 17:06:14,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:06:14,247 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2022-12-13 17:06:14,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:14,251 INFO L225 Difference]: With dead ends: 1420 [2022-12-13 17:06:14,251 INFO L226 Difference]: Without dead ends: 1086 [2022-12-13 17:06:14,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 111 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:06:14,253 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 1052 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:14,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 1433 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:06:14,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2022-12-13 17:06:14,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 657. [2022-12-13 17:06:14,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 615 states have (on average 1.2682926829268293) internal successors, (780), 621 states have internal predecessors, (780), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (29), 25 states have call predecessors, (29), 28 states have call successors, (29) [2022-12-13 17:06:14,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 837 transitions. [2022-12-13 17:06:14,276 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 837 transitions. Word has length 62 [2022-12-13 17:06:14,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:14,276 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 837 transitions. [2022-12-13 17:06:14,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 17:06:14,276 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 837 transitions. [2022-12-13 17:06:14,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 17:06:14,277 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:14,277 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:06:14,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 17:06:14,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:06:14,478 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-13 17:06:14,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:14,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1714113871, now seen corresponding path program 1 times [2022-12-13 17:06:14,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:14,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482581077] [2022-12-13 17:06:14,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:14,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:14,517 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:06:14,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1140521239] [2022-12-13 17:06:14,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:14,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:06:14,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:06:14,518 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:06:14,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 17:06:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:14,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 17:06:14,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:06:14,928 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 17:06:14,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:06:14,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:14,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482581077] [2022-12-13 17:06:14,928 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:06:14,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140521239] [2022-12-13 17:06:14,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140521239] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:06:14,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:06:14,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:06:14,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740841619] [2022-12-13 17:06:14,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:14,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:06:14,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:14,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:06:14,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:06:14,930 INFO L87 Difference]: Start difference. First operand 657 states and 837 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 17:06:15,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:15,049 INFO L93 Difference]: Finished difference Result 1246 states and 1598 transitions. [2022-12-13 17:06:15,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:06:15,049 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 93 [2022-12-13 17:06:15,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:15,052 INFO L225 Difference]: With dead ends: 1246 [2022-12-13 17:06:15,052 INFO L226 Difference]: Without dead ends: 657 [2022-12-13 17:06:15,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:06:15,053 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 22 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:15,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1421 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:06:15,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-12-13 17:06:15,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2022-12-13 17:06:15,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 615 states have (on average 1.2682926829268293) internal successors, (780), 621 states have internal predecessors, (780), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2022-12-13 17:06:15,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 836 transitions. [2022-12-13 17:06:15,073 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 836 transitions. Word has length 93 [2022-12-13 17:06:15,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:15,073 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 836 transitions. [2022-12-13 17:06:15,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 17:06:15,074 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 836 transitions. [2022-12-13 17:06:15,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 17:06:15,074 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:15,075 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:06:15,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 17:06:15,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:06:15,275 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-13 17:06:15,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:15,276 INFO L85 PathProgramCache]: Analyzing trace with hash 828828729, now seen corresponding path program 1 times [2022-12-13 17:06:15,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:15,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010756072] [2022-12-13 17:06:15,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:15,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:15,312 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:06:15,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2009839041] [2022-12-13 17:06:15,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:15,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:06:15,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:06:15,314 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:06:15,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 17:06:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:15,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 17:06:15,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:06:15,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 17:06:15,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 17:06:15,738 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 17:06:15,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:06:15,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:15,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010756072] [2022-12-13 17:06:15,738 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:06:15,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009839041] [2022-12-13 17:06:15,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009839041] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:06:15,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:06:15,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:06:15,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591813760] [2022-12-13 17:06:15,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:15,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:06:15,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:15,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:06:15,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:06:15,740 INFO L87 Difference]: Start difference. First operand 657 states and 836 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-13 17:06:16,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:16,033 INFO L93 Difference]: Finished difference Result 947 states and 1224 transitions. [2022-12-13 17:06:16,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:06:16,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 98 [2022-12-13 17:06:16,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:16,037 INFO L225 Difference]: With dead ends: 947 [2022-12-13 17:06:16,037 INFO L226 Difference]: Without dead ends: 850 [2022-12-13 17:06:16,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:06:16,039 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 108 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:16,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 840 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 17:06:16,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-12-13 17:06:16,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 661. [2022-12-13 17:06:16,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 619 states have (on average 1.2665589660743135) internal successors, (784), 625 states have internal predecessors, (784), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2022-12-13 17:06:16,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 840 transitions. [2022-12-13 17:06:16,083 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 840 transitions. Word has length 98 [2022-12-13 17:06:16,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:16,084 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 840 transitions. [2022-12-13 17:06:16,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-13 17:06:16,084 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 840 transitions. [2022-12-13 17:06:16,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-13 17:06:16,085 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:16,085 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:06:16,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 17:06:16,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 17:06:16,286 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-13 17:06:16,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:16,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1205616451, now seen corresponding path program 1 times [2022-12-13 17:06:16,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:16,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458561142] [2022-12-13 17:06:16,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:16,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:16,327 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:06:16,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086455475] [2022-12-13 17:06:16,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:16,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:06:16,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:06:16,329 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:06:16,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 17:06:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:17,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 17:06:17,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:06:17,182 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 17:06:17,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:06:17,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:17,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458561142] [2022-12-13 17:06:17,183 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:06:17,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086455475] [2022-12-13 17:06:17,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086455475] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:06:17,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:06:17,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 17:06:17,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480413130] [2022-12-13 17:06:17,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:17,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:06:17,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:17,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:06:17,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:06:17,185 INFO L87 Difference]: Start difference. First operand 661 states and 840 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 17:06:17,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:17,304 INFO L93 Difference]: Finished difference Result 1262 states and 1617 transitions. [2022-12-13 17:06:17,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 17:06:17,305 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 108 [2022-12-13 17:06:17,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:17,307 INFO L225 Difference]: With dead ends: 1262 [2022-12-13 17:06:17,307 INFO L226 Difference]: Without dead ends: 666 [2022-12-13 17:06:17,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:06:17,309 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 18 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2082 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:17,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2082 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:06:17,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-12-13 17:06:17,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2022-12-13 17:06:17,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 623 states have (on average 1.2664526484751204) internal successors, (789), 630 states have internal predecessors, (789), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (29), 25 states have call predecessors, (29), 28 states have call successors, (29) [2022-12-13 17:06:17,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 846 transitions. [2022-12-13 17:06:17,346 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 846 transitions. Word has length 108 [2022-12-13 17:06:17,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:17,346 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 846 transitions. [2022-12-13 17:06:17,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 17:06:17,346 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 846 transitions. [2022-12-13 17:06:17,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-13 17:06:17,347 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:17,348 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:06:17,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 17:06:17,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 17:06:17,548 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-13 17:06:17,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:17,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1537609937, now seen corresponding path program 1 times [2022-12-13 17:06:17,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:17,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551309815] [2022-12-13 17:06:17,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:17,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:17,595 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:06:17,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1008465703] [2022-12-13 17:06:17,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:17,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:06:17,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:06:17,596 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:06:17,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 17:06:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:19,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 17:06:19,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:06:19,138 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 17:06:19,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:06:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 17:06:19,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:19,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551309815] [2022-12-13 17:06:19,226 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:06:19,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008465703] [2022-12-13 17:06:19,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008465703] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:06:19,227 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:06:19,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2022-12-13 17:06:19,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915392283] [2022-12-13 17:06:19,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:06:19,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 17:06:19,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:19,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 17:06:19,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-12-13 17:06:19,228 INFO L87 Difference]: Start difference. First operand 666 states and 846 transitions. Second operand has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 17:06:19,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:19,424 INFO L93 Difference]: Finished difference Result 1285 states and 1649 transitions. [2022-12-13 17:06:19,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 17:06:19,424 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 110 [2022-12-13 17:06:19,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:19,427 INFO L225 Difference]: With dead ends: 1285 [2022-12-13 17:06:19,427 INFO L226 Difference]: Without dead ends: 682 [2022-12-13 17:06:19,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-12-13 17:06:19,429 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 27 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:19,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2093 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:06:19,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-12-13 17:06:19,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 679. [2022-12-13 17:06:19,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 635 states have (on average 1.2708661417322835) internal successors, (807), 642 states have internal predecessors, (807), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (29), 25 states have call predecessors, (29), 28 states have call successors, (29) [2022-12-13 17:06:19,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 864 transitions. [2022-12-13 17:06:19,461 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 864 transitions. Word has length 110 [2022-12-13 17:06:19,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:19,461 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 864 transitions. [2022-12-13 17:06:19,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 17:06:19,462 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 864 transitions. [2022-12-13 17:06:19,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 17:06:19,463 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:19,463 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:06:19,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 17:06:19,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 17:06:19,663 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-13 17:06:19,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:19,664 INFO L85 PathProgramCache]: Analyzing trace with hash -156663203, now seen corresponding path program 2 times [2022-12-13 17:06:19,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:19,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872101114] [2022-12-13 17:06:19,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:19,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:19,698 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:06:19,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [245671506] [2022-12-13 17:06:19,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:06:19,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:06:19,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:06:19,699 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:06:19,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 17:06:29,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:06:29,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:06:29,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 17:06:29,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:06:29,724 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 38 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 17:06:29,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:06:29,949 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-13 17:06:29,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:29,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872101114] [2022-12-13 17:06:29,949 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:06:29,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245671506] [2022-12-13 17:06:29,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245671506] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:06:29,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:06:29,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2022-12-13 17:06:29,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886616999] [2022-12-13 17:06:29,950 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:06:29,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 17:06:29,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:29,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 17:06:29,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-12-13 17:06:29,952 INFO L87 Difference]: Start difference. First operand 679 states and 864 transitions. Second operand has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 17:06:30,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:30,808 INFO L93 Difference]: Finished difference Result 1378 states and 1766 transitions. [2022-12-13 17:06:30,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 17:06:30,809 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 114 [2022-12-13 17:06:30,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:30,810 INFO L225 Difference]: With dead ends: 1378 [2022-12-13 17:06:30,810 INFO L226 Difference]: Without dead ends: 697 [2022-12-13 17:06:30,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=275, Invalid=915, Unknown=0, NotChecked=0, Total=1190 [2022-12-13 17:06:30,812 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 301 mSDsluCounter, 2996 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 3297 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:30,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 3297 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 17:06:30,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-12-13 17:06:30,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 685. [2022-12-13 17:06:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 641 states have (on average 1.2683307332293292) internal successors, (813), 648 states have internal predecessors, (813), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (29), 25 states have call predecessors, (29), 28 states have call successors, (29) [2022-12-13 17:06:30,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 870 transitions. [2022-12-13 17:06:30,833 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 870 transitions. Word has length 114 [2022-12-13 17:06:30,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:30,833 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 870 transitions. [2022-12-13 17:06:30,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 17:06:30,834 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 870 transitions. [2022-12-13 17:06:30,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-12-13 17:06:30,834 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:30,835 INFO L195 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:06:30,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 17:06:31,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:06:31,035 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-13 17:06:31,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:31,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2029920984, now seen corresponding path program 3 times [2022-12-13 17:06:31,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:31,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825221538] [2022-12-13 17:06:31,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:31,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:31,084 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:06:31,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897469184] [2022-12-13 17:06:31,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 17:06:31,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:06:31,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:06:31,086 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:06:31,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fea367-10da-447c-8eff-6891d95caebe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process