./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array18_pattern.c --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_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/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_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array18_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/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_ae428ed1-1bba-4b3e-9702-3629ba9710fe/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 4d58909a91b196e39d7623dd2e1e4d9b2698d6fa8ff06c2897eb5762e2e2e408 --- 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 16:35:49,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:35:49,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:35:49,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:35:49,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:35:49,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:35:49,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:35:49,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:35:49,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:35:49,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:35:49,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:35:49,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:35:49,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:35:49,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:35:49,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:35:49,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:35:49,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:35:49,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:35:49,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:35:49,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:35:49,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:35:49,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:35:49,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:35:49,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:35:49,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:35:49,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:35:49,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:35:49,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:35:49,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:35:49,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:35:49,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:35:49,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:35:49,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:35:49,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:35:49,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:35:49,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:35:49,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:35:49,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:35:49,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:35:49,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:35:49,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:35:49,934 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 16:35:49,948 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:35:49,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:35:49,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:35:49,948 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:35:49,949 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:35:49,949 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:35:49,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:35:49,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:35:49,950 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:35:49,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:35:49,950 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:35:49,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:35:49,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:35:49,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:35:49,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:35:49,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:35:49,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:35:49,951 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:35:49,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:35:49,951 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:35:49,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:35:49,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:35:49,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:35:49,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:35:49,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:35:49,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:35:49,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:35:49,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:35:49,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:35:49,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:35:49,953 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:35:49,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:35:49,954 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:35:49,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:35:49,954 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:35:49,954 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_ae428ed1-1bba-4b3e-9702-3629ba9710fe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d58909a91b196e39d7623dd2e1e4d9b2698d6fa8ff06c2897eb5762e2e2e408 [2022-12-13 16:35:50,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:35:50,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:35:50,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:35:50,156 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:35:50,156 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:35:50,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-patterns/array18_pattern.c [2022-12-13 16:35:52,767 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:35:52,933 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:35:52,934 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/sv-benchmarks/c/array-patterns/array18_pattern.c [2022-12-13 16:35:52,939 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/data/68f27f6a8/fbd55a2e499346e5b14a142a1a2bbcf5/FLAG638b6e2ab [2022-12-13 16:35:52,949 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/data/68f27f6a8/fbd55a2e499346e5b14a142a1a2bbcf5 [2022-12-13 16:35:52,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:35:52,952 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:35:52,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:35:52,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:35:52,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:35:52,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:35:52" (1/1) ... [2022-12-13 16:35:52,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f3c5c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:35:52, skipping insertion in model container [2022-12-13 16:35:52,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:35:52" (1/1) ... [2022-12-13 16:35:52,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:35:52,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:35:53,088 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_ae428ed1-1bba-4b3e-9702-3629ba9710fe/sv-benchmarks/c/array-patterns/array18_pattern.c[1444,1457] [2022-12-13 16:35:53,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:35:53,116 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:35:53,127 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_ae428ed1-1bba-4b3e-9702-3629ba9710fe/sv-benchmarks/c/array-patterns/array18_pattern.c[1444,1457] [2022-12-13 16:35:53,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:35:53,151 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:35:53,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:35:53 WrapperNode [2022-12-13 16:35:53,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:35:53,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:35:53,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:35:53,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:35:53,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:35:53" (1/1) ... [2022-12-13 16:35:53,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:35:53" (1/1) ... [2022-12-13 16:35:53,180 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2022-12-13 16:35:53,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:35:53,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:35:53,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:35:53,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:35:53,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:35:53" (1/1) ... [2022-12-13 16:35:53,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:35:53" (1/1) ... [2022-12-13 16:35:53,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:35:53" (1/1) ... [2022-12-13 16:35:53,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:35:53" (1/1) ... [2022-12-13 16:35:53,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:35:53" (1/1) ... [2022-12-13 16:35:53,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:35:53" (1/1) ... [2022-12-13 16:35:53,202 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:35:53" (1/1) ... [2022-12-13 16:35:53,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:35:53" (1/1) ... [2022-12-13 16:35:53,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:35:53,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:35:53,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:35:53,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:35:53,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:35:53" (1/1) ... [2022-12-13 16:35:53,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:35:53,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:35:53,230 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:35:53,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:35:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:35:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 16:35:53,264 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 16:35:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:35:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:35:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 16:35:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:35:53,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:35:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 16:35:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:35:53,322 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:35:53,323 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:35:53,449 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:35:53,454 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:35:53,454 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-13 16:35:53,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:35:53 BoogieIcfgContainer [2022-12-13 16:35:53,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:35:53,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:35:53,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:35:53,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:35:53,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:35:52" (1/3) ... [2022-12-13 16:35:53,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f24c3f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:35:53, skipping insertion in model container [2022-12-13 16:35:53,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:35:53" (2/3) ... [2022-12-13 16:35:53,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f24c3f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:35:53, skipping insertion in model container [2022-12-13 16:35:53,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:35:53" (3/3) ... [2022-12-13 16:35:53,463 INFO L112 eAbstractionObserver]: Analyzing ICFG array18_pattern.c [2022-12-13 16:35:53,478 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:35:53,478 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 16:35:53,514 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:35:53,519 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;@1e3927d7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:35:53,519 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 16:35:53,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:35:53,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 16:35:53,528 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:35:53,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:35:53,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:35:53,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:35:53,533 INFO L85 PathProgramCache]: Analyzing trace with hash -2132324569, now seen corresponding path program 1 times [2022-12-13 16:35:53,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:35:53,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613721072] [2022-12-13 16:35:53,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:35:53,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:35:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:35:53,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:35:53,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613721072] [2022-12-13 16:35:53,641 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 16:35:53,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187168712] [2022-12-13 16:35:53,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:35:53,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:35:53,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:35:53,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:35:53,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:35:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:35:53,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 16:35:53,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:35:53,724 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 16:35:53,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:35:53,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187168712] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:35:53,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:35:53,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:35:53,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067456821] [2022-12-13 16:35:53,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:35:53,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 16:35:53,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:35:53,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 16:35:53,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 16:35:53,757 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 16:35:53,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:35:53,776 INFO L93 Difference]: Finished difference Result 63 states and 97 transitions. [2022-12-13 16:35:53,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 16:35:53,778 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-12-13 16:35:53,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:35:53,785 INFO L225 Difference]: With dead ends: 63 [2022-12-13 16:35:53,785 INFO L226 Difference]: Without dead ends: 29 [2022-12-13 16:35:53,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 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 16:35:53,792 INFO L413 NwaCegarLoop]: 41 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, 41 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 16:35:53,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:35:53,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-13 16:35:53,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-12-13 16:35:53,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:35:53,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2022-12-13 16:35:53,821 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 15 [2022-12-13 16:35:53,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:35:53,821 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2022-12-13 16:35:53,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 16:35:53,822 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2022-12-13 16:35:53,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 16:35:53,823 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:35:53,824 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:35:53,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:35:54,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 16:35:54,026 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:35:54,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:35:54,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1872922357, now seen corresponding path program 1 times [2022-12-13 16:35:54,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:35:54,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125362384] [2022-12-13 16:35:54,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:35:54,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:35:54,091 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:35:54,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [52907317] [2022-12-13 16:35:54,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:35:54,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:35:54,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:35:54,096 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:35:54,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:35:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:35:54,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 16:35:54,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:35:54,305 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 16:35:54,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:35:54,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:35:54,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125362384] [2022-12-13 16:35:54,306 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:35:54,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52907317] [2022-12-13 16:35:54,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52907317] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:35:54,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:35:54,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:35:54,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978293849] [2022-12-13 16:35:54,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:35:54,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:35:54,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:35:54,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:35:54,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:35:54,309 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:35:54,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:35:54,330 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-12-13 16:35:54,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:35:54,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-12-13 16:35:54,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:35:54,331 INFO L225 Difference]: With dead ends: 36 [2022-12-13 16:35:54,332 INFO L226 Difference]: Without dead ends: 32 [2022-12-13 16:35:54,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 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 16:35:54,333 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 12 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:35:54,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 84 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:35:54,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-13 16:35:54,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-12-13 16:35:54,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:35:54,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-12-13 16:35:54,338 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 30 [2022-12-13 16:35:54,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:35:54,339 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-12-13 16:35:54,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:35:54,339 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-12-13 16:35:54,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-13 16:35:54,340 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:35:54,340 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 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 16:35:54,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 16:35:54,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:35:54,542 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:35:54,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:35:54,545 INFO L85 PathProgramCache]: Analyzing trace with hash 212512359, now seen corresponding path program 1 times [2022-12-13 16:35:54,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:35:54,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135456873] [2022-12-13 16:35:54,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:35:54,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:35:54,593 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:35:54,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1832388754] [2022-12-13 16:35:54,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:35:54,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:35:54,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:35:54,598 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:35:54,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 16:35:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:35:54,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:35:54,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:35:54,789 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 16:35:54,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:35:54,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:35:54,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135456873] [2022-12-13 16:35:54,790 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:35:54,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832388754] [2022-12-13 16:35:54,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832388754] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:35:54,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:35:54,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:35:54,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733941636] [2022-12-13 16:35:54,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:35:54,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:35:54,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:35:54,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:35:54,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:35:54,792 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:35:54,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:35:54,863 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2022-12-13 16:35:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:35:54,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-12-13 16:35:54,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:35:54,865 INFO L225 Difference]: With dead ends: 67 [2022-12-13 16:35:54,865 INFO L226 Difference]: Without dead ends: 42 [2022-12-13 16:35:54,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:35:54,866 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 21 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:35:54,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 98 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:35:54,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-12-13 16:35:54,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2022-12-13 16:35:54,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:35:54,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-12-13 16:35:54,871 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 35 [2022-12-13 16:35:54,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:35:54,871 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-12-13 16:35:54,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:35:54,872 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-12-13 16:35:54,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 16:35:54,873 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:35:54,873 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 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 16:35:54,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 16:35:55,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:35:55,075 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:35:55,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:35:55,077 INFO L85 PathProgramCache]: Analyzing trace with hash -654332553, now seen corresponding path program 1 times [2022-12-13 16:35:55,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:35:55,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236642800] [2022-12-13 16:35:55,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:35:55,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:35:55,117 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:35:55,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1069620124] [2022-12-13 16:35:55,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:35:55,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:35:55,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:35:55,123 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:35:55,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 16:35:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:35:55,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:35:55,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:35:55,275 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:35:55,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:35:55,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:35:55,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236642800] [2022-12-13 16:35:55,276 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:35:55,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069620124] [2022-12-13 16:35:55,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069620124] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:35:55,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:35:55,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:35:55,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412976624] [2022-12-13 16:35:55,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:35:55,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:35:55,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:35:55,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:35:55,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:35:55,279 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:35:55,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:35:55,317 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2022-12-13 16:35:55,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:35:55,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2022-12-13 16:35:55,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:35:55,318 INFO L225 Difference]: With dead ends: 64 [2022-12-13 16:35:55,318 INFO L226 Difference]: Without dead ends: 36 [2022-12-13 16:35:55,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 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 16:35:55,320 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 28 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:35:55,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 53 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:35:55,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-12-13 16:35:55,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2022-12-13 16:35:55,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:35:55,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2022-12-13 16:35:55,327 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 38 [2022-12-13 16:35:55,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:35:55,327 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2022-12-13 16:35:55,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:35:55,327 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2022-12-13 16:35:55,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-13 16:35:55,328 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:35:55,328 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 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 16:35:55,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 16:35:55,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:35:55,530 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:35:55,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:35:55,532 INFO L85 PathProgramCache]: Analyzing trace with hash 579061941, now seen corresponding path program 1 times [2022-12-13 16:35:55,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:35:55,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210259877] [2022-12-13 16:35:55,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:35:55,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:35:55,569 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:35:55,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [449793941] [2022-12-13 16:35:55,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:35:55,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:35:55,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:35:55,573 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:35:55,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 16:35:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:35:55,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-13 16:35:55,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:35:56,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 81 treesize of output 76 [2022-12-13 16:35:56,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 160 [2022-12-13 16:35:56,409 INFO L321 Elim1Store]: treesize reduction 20, result has 13.0 percent of original size [2022-12-13 16:35:56,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 10 [2022-12-13 16:35:56,444 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:35:56,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:35:56,584 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 76 treesize of output 72 [2022-12-13 16:35:56,596 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:35:56,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 161 [2022-12-13 16:35:56,670 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:35:56,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 765 treesize of output 758 [2022-12-13 16:36:04,461 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:36:04,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:36:04,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210259877] [2022-12-13 16:36:04,461 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:36:04,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449793941] [2022-12-13 16:36:04,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449793941] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:36:04,462 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:36:04,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17] total 37 [2022-12-13 16:36:04,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881572220] [2022-12-13 16:36:04,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:36:04,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-13 16:36:04,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:36:04,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-13 16:36:04,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1143, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 16:36:04,464 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 37 states, 35 states have (on average 1.8) internal successors, (63), 34 states have internal predecessors, (63), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 16:36:15,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:36:15,981 INFO L93 Difference]: Finished difference Result 140 states and 175 transitions. [2022-12-13 16:36:15,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-13 16:36:15,982 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 1.8) internal successors, (63), 34 states have internal predecessors, (63), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 40 [2022-12-13 16:36:15,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:36:15,983 INFO L225 Difference]: With dead ends: 140 [2022-12-13 16:36:15,983 INFO L226 Difference]: Without dead ends: 113 [2022-12-13 16:36:15,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1774 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=1038, Invalid=5124, Unknown=0, NotChecked=0, Total=6162 [2022-12-13 16:36:15,985 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 238 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:36:15,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 312 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 16:36:15,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-12-13 16:36:15,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 70. [2022-12-13 16:36:15,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 61 states have (on average 1.278688524590164) internal successors, (78), 61 states have internal predecessors, (78), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 16:36:15,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2022-12-13 16:36:15,998 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 40 [2022-12-13 16:36:15,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:36:15,998 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2022-12-13 16:36:15,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 1.8) internal successors, (63), 34 states have internal predecessors, (63), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 16:36:15,998 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2022-12-13 16:36:15,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-13 16:36:15,999 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:36:15,999 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 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 16:36:16,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 16:36:16,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:36:16,200 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:36:16,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:36:16,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1287607751, now seen corresponding path program 1 times [2022-12-13 16:36:16,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:36:16,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273091793] [2022-12-13 16:36:16,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:36:16,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:36:16,232 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:36:16,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1147070157] [2022-12-13 16:36:16,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:36:16,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:36:16,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:36:16,237 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:36:16,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 16:36:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:36:16,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 16:36:16,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:36:16,400 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:36:16,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:36:16,573 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 16:36:16,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:36:16,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273091793] [2022-12-13 16:36:16,573 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:36:16,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147070157] [2022-12-13 16:36:16,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147070157] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:36:16,573 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:36:16,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2022-12-13 16:36:16,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852308576] [2022-12-13 16:36:16,574 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:36:16,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 16:36:16,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:36:16,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 16:36:16,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-12-13 16:36:16,576 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-13 16:36:16,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:36:16,982 INFO L93 Difference]: Finished difference Result 177 states and 214 transitions. [2022-12-13 16:36:16,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 16:36:16,983 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 40 [2022-12-13 16:36:16,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:36:16,985 INFO L225 Difference]: With dead ends: 177 [2022-12-13 16:36:16,985 INFO L226 Difference]: Without dead ends: 128 [2022-12-13 16:36:16,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2022-12-13 16:36:16,986 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 126 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 16:36:16,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 208 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 16:36:16,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-12-13 16:36:16,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 72. [2022-12-13 16:36:16,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 62 states have internal predecessors, (74), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 16:36:16,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2022-12-13 16:36:16,999 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 40 [2022-12-13 16:36:16,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:36:17,000 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2022-12-13 16:36:17,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-13 16:36:17,000 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2022-12-13 16:36:17,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 16:36:17,000 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:36:17,001 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:36:17,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 16:36:17,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:36:17,201 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:36:17,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:36:17,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1706965193, now seen corresponding path program 2 times [2022-12-13 16:36:17,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:36:17,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953396134] [2022-12-13 16:36:17,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:36:17,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:36:17,210 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:36:17,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1545002015] [2022-12-13 16:36:17,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:36:17,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:36:17,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:36:17,211 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:36:17,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 16:36:17,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 16:36:17,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:36:17,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:36:17,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:36:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:36:17,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:36:17,347 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:36:17,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:36:17,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953396134] [2022-12-13 16:36:17,348 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:36:17,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545002015] [2022-12-13 16:36:17,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545002015] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:36:17,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:36:17,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-12-13 16:36:17,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079748247] [2022-12-13 16:36:17,348 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:36:17,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:36:17,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:36:17,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:36:17,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:36:17,350 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:36:17,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:36:17,504 INFO L93 Difference]: Finished difference Result 152 states and 180 transitions. [2022-12-13 16:36:17,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:36:17,504 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2022-12-13 16:36:17,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:36:17,505 INFO L225 Difference]: With dead ends: 152 [2022-12-13 16:36:17,505 INFO L226 Difference]: Without dead ends: 113 [2022-12-13 16:36:17,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-12-13 16:36:17,506 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 91 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:36:17,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 140 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:36:17,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-12-13 16:36:17,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 85. [2022-12-13 16:36:17,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 74 states have (on average 1.1891891891891893) internal successors, (88), 75 states have internal predecessors, (88), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 16:36:17,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 100 transitions. [2022-12-13 16:36:17,527 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 100 transitions. Word has length 42 [2022-12-13 16:36:17,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:36:17,527 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 100 transitions. [2022-12-13 16:36:17,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:36:17,528 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 100 transitions. [2022-12-13 16:36:17,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 16:36:17,528 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:36:17,528 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:36:17,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 16:36:17,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 16:36:17,730 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:36:17,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:36:17,730 INFO L85 PathProgramCache]: Analyzing trace with hash 460196979, now seen corresponding path program 3 times [2022-12-13 16:36:17,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:36:17,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343721112] [2022-12-13 16:36:17,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:36:17,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:36:17,741 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:36:17,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863512792] [2022-12-13 16:36:17,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 16:36:17,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:36:17,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:36:17,743 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:36:17,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 16:36:17,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 16:36:17,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:36:17,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-13 16:36:17,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:36:18,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 81 treesize of output 76 [2022-12-13 16:36:18,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 160 [2022-12-13 16:36:18,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:18,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 3 [2022-12-13 16:36:18,222 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:36:18,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 34 [2022-12-13 16:36:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 16:36:20,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:36:21,084 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 76 treesize of output 72 [2022-12-13 16:36:21,120 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:36:21,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 161 [2022-12-13 16:36:21,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:36:21,194 INFO L321 Elim1Store]: treesize reduction 111, result has 39.0 percent of original size [2022-12-13 16:36:21,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 157 treesize of output 123 [2022-12-13 16:36:21,289 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:36:21,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 162 treesize of output 159 [2022-12-13 16:36:22,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:36:22,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343721112] [2022-12-13 16:36:22,250 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:36:22,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863512792] [2022-12-13 16:36:22,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863512792] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:36:22,251 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:36:22,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-12-13 16:36:22,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720986077] [2022-12-13 16:36:22,251 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 16:36:22,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 16:36:22,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:36:22,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 16:36:22,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=585, Unknown=1, NotChecked=0, Total=702 [2022-12-13 16:36:22,252 INFO L87 Difference]: Start difference. First operand 85 states and 100 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:36:23,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:36:23,446 INFO L93 Difference]: Finished difference Result 110 states and 131 transitions. [2022-12-13 16:36:23,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 16:36:23,446 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2022-12-13 16:36:23,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:36:23,447 INFO L225 Difference]: With dead ends: 110 [2022-12-13 16:36:23,448 INFO L226 Difference]: Without dead ends: 106 [2022-12-13 16:36:23,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=234, Invalid=1025, Unknown=1, NotChecked=0, Total=1260 [2022-12-13 16:36:23,449 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 35 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 16:36:23,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 143 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 16:36:23,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-12-13 16:36:23,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 85. [2022-12-13 16:36:23,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 74 states have (on average 1.1891891891891893) internal successors, (88), 75 states have internal predecessors, (88), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 16:36:23,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 100 transitions. [2022-12-13 16:36:23,478 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 100 transitions. Word has length 42 [2022-12-13 16:36:23,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:36:23,479 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 100 transitions. [2022-12-13 16:36:23,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:36:23,479 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 100 transitions. [2022-12-13 16:36:23,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 16:36:23,480 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:36:23,481 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:36:23,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 16:36:23,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:36:23,682 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:36:23,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:36:23,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1406472713, now seen corresponding path program 2 times [2022-12-13 16:36:23,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:36:23,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817510956] [2022-12-13 16:36:23,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:36:23,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:36:23,713 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:36:23,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [37250993] [2022-12-13 16:36:23,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:36:23,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:36:23,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:36:23,715 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:36:23,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 16:36:23,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 16:36:23,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:36:23,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:36:23,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:36:23,804 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:36:23,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:36:23,837 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 16:36:23,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:36:23,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817510956] [2022-12-13 16:36:23,837 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:36:23,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37250993] [2022-12-13 16:36:23,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37250993] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:36:23,837 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:36:23,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-12-13 16:36:23,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712553461] [2022-12-13 16:36:23,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:36:23,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 16:36:23,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:36:23,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 16:36:23,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:36:23,839 INFO L87 Difference]: Start difference. First operand 85 states and 100 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:36:24,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:36:24,003 INFO L93 Difference]: Finished difference Result 156 states and 190 transitions. [2022-12-13 16:36:24,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 16:36:24,004 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2022-12-13 16:36:24,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:36:24,004 INFO L225 Difference]: With dead ends: 156 [2022-12-13 16:36:24,004 INFO L226 Difference]: Without dead ends: 115 [2022-12-13 16:36:24,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-12-13 16:36:24,005 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 47 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:36:24,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 114 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:36:24,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-12-13 16:36:24,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 99. [2022-12-13 16:36:24,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 88 states have (on average 1.2045454545454546) internal successors, (106), 89 states have internal predecessors, (106), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 16:36:24,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2022-12-13 16:36:24,023 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 42 [2022-12-13 16:36:24,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:36:24,023 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2022-12-13 16:36:24,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:36:24,023 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2022-12-13 16:36:24,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 16:36:24,024 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:36:24,024 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-12-13 16:36:24,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 16:36:24,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:36:24,226 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:36:24,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:36:24,227 INFO L85 PathProgramCache]: Analyzing trace with hash 822903975, now seen corresponding path program 4 times [2022-12-13 16:36:24,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:36:24,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108096081] [2022-12-13 16:36:24,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:36:24,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:36:24,252 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:36:24,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2127352091] [2022-12-13 16:36:24,252 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 16:36:24,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:36:24,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:36:24,255 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:36:24,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 16:36:24,317 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 16:36:24,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:36:24,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:36:24,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:36:24,373 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:36:24,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:36:24,411 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 16:36:24,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:36:24,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108096081] [2022-12-13 16:36:24,411 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:36:24,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127352091] [2022-12-13 16:36:24,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127352091] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:36:24,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:36:24,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-12-13 16:36:24,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195577139] [2022-12-13 16:36:24,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:36:24,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:36:24,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:36:24,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:36:24,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:36:24,413 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:36:24,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:36:24,546 INFO L93 Difference]: Finished difference Result 118 states and 136 transitions. [2022-12-13 16:36:24,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 16:36:24,547 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2022-12-13 16:36:24,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:36:24,547 INFO L225 Difference]: With dead ends: 118 [2022-12-13 16:36:24,547 INFO L226 Difference]: Without dead ends: 79 [2022-12-13 16:36:24,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:36:24,548 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 79 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:36:24,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 115 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:36:24,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-12-13 16:36:24,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 71. [2022-12-13 16:36:24,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:36:24,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2022-12-13 16:36:24,560 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 45 [2022-12-13 16:36:24,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:36:24,560 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2022-12-13 16:36:24,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:36:24,561 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2022-12-13 16:36:24,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-13 16:36:24,561 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:36:24,561 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2022-12-13 16:36:24,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 16:36:24,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 16:36:24,762 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:36:24,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:36:24,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1727010197, now seen corresponding path program 3 times [2022-12-13 16:36:24,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:36:24,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632250827] [2022-12-13 16:36:24,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:36:24,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:36:24,791 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:36:24,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1277731692] [2022-12-13 16:36:24,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 16:36:24,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:36:24,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:36:24,795 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:36:24,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 16:36:24,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 16:36:24,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:36:24,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 16:36:24,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:36:24,959 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-13 16:36:24,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:36:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-13 16:36:25,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:36:25,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632250827] [2022-12-13 16:36:25,152 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:36:25,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277731692] [2022-12-13 16:36:25,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277731692] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:36:25,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:36:25,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2022-12-13 16:36:25,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164532591] [2022-12-13 16:36:25,153 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:36:25,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 16:36:25,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:36:25,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 16:36:25,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2022-12-13 16:36:25,154 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 20 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 15 states have internal predecessors, (48), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-12-13 16:36:25,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:36:25,460 INFO L93 Difference]: Finished difference Result 127 states and 151 transitions. [2022-12-13 16:36:25,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 16:36:25,460 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 15 states have internal predecessors, (48), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2022-12-13 16:36:25,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:36:25,462 INFO L225 Difference]: With dead ends: 127 [2022-12-13 16:36:25,462 INFO L226 Difference]: Without dead ends: 123 [2022-12-13 16:36:25,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 16:36:25,462 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 108 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:36:25,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 142 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:36:25,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-12-13 16:36:25,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 64. [2022-12-13 16:36:25,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 58 states have (on average 1.206896551724138) internal successors, (70), 58 states have internal predecessors, (70), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:36:25,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2022-12-13 16:36:25,474 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 49 [2022-12-13 16:36:25,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:36:25,474 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2022-12-13 16:36:25,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 15 states have internal predecessors, (48), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-12-13 16:36:25,475 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2022-12-13 16:36:25,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-13 16:36:25,475 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:36:25,475 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2022-12-13 16:36:25,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 16:36:25,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:36:25,677 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:36:25,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:36:25,678 INFO L85 PathProgramCache]: Analyzing trace with hash 538416053, now seen corresponding path program 5 times [2022-12-13 16:36:25,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:36:25,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438215004] [2022-12-13 16:36:25,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:36:25,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:36:25,708 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:36:25,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [350524054] [2022-12-13 16:36:25,708 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 16:36:25,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:36:25,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:36:25,711 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:36:25,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 16:36:26,036 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-12-13 16:36:26,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:36:26,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:36:26,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:36:26,086 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 16:36:26,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:36:26,135 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 16:36:26,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:36:26,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438215004] [2022-12-13 16:36:26,135 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:36:26,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350524054] [2022-12-13 16:36:26,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350524054] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:36:26,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:36:26,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-12-13 16:36:26,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36696104] [2022-12-13 16:36:26,136 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:36:26,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:36:26,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:36:26,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:36:26,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:36:26,137 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:36:26,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:36:26,256 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2022-12-13 16:36:26,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 16:36:26,256 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2022-12-13 16:36:26,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:36:26,257 INFO L225 Difference]: With dead ends: 71 [2022-12-13 16:36:26,257 INFO L226 Difference]: Without dead ends: 60 [2022-12-13 16:36:26,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2022-12-13 16:36:26,258 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 56 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:36:26,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 102 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:36:26,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-12-13 16:36:26,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2022-12-13 16:36:26,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 51 states have internal predecessors, (60), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:36:26,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2022-12-13 16:36:26,267 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 54 [2022-12-13 16:36:26,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:36:26,267 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2022-12-13 16:36:26,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:36:26,267 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2022-12-13 16:36:26,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 16:36:26,268 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:36:26,268 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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] [2022-12-13 16:36:26,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 16:36:26,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:36:26,469 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:36:26,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:36:26,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1673343477, now seen corresponding path program 6 times [2022-12-13 16:36:26,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:36:26,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016460651] [2022-12-13 16:36:26,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:36:26,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:36:26,497 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:36:26,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2092329380] [2022-12-13 16:36:26,498 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 16:36:26,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:36:26,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:36:26,501 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:36:26,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 16:36:27,197 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-12-13 16:36:27,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:36:27,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 90 conjunts are in the unsatisfiable core [2022-12-13 16:36:27,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:36:27,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:27,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 16:36:27,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:27,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:27,314 INFO L321 Elim1Store]: treesize reduction 27, result has 32.5 percent of original size [2022-12-13 16:36:27,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 43 [2022-12-13 16:36:27,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:27,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:27,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:27,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:27,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:27,539 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:36:27,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2022-12-13 16:36:27,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:27,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:27,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:27,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:27,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:27,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:27,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:27,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:27,682 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:36:27,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 67 [2022-12-13 16:36:28,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:28,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:28,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:28,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:28,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:28,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:28,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:28,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:28,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:28,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:28,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:28,605 INFO L321 Elim1Store]: treesize reduction 49, result has 49.5 percent of original size [2022-12-13 16:36:28,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 69 treesize of output 108 [2022-12-13 16:36:29,337 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-12-13 16:36:29,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 287 treesize of output 271 [2022-12-13 16:36:29,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,521 INFO L321 Elim1Store]: treesize reduction 318, result has 0.3 percent of original size [2022-12-13 16:36:29,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 20 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 270 treesize of output 300 [2022-12-13 16:36:29,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:29,923 INFO L321 Elim1Store]: treesize reduction 291, result has 23.2 percent of original size [2022-12-13 16:36:29,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 184 treesize of output 144 [2022-12-13 16:36:38,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:38,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:38,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:38,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:36:38,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:38,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:38,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:38,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:38,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:38,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:36:38,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:38,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:38,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:41,189 INFO L321 Elim1Store]: treesize reduction 700, result has 45.2 percent of original size [2022-12-13 16:36:41,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 10 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 208 treesize of output 652 [2022-12-13 16:43:22,565 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-12-13 16:43:22,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-12-13 16:43:22,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:43:22,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016460651] [2022-12-13 16:43:22,565 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:43:22,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092329380] [2022-12-13 16:43:22,566 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-12-13 16:43:22,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 16:43:22,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:43:22,768 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:625) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:370) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:184) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:361) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:306) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 51 more [2022-12-13 16:43:22,773 INFO L158 Benchmark]: Toolchain (without parser) took 449820.58ms. Allocated memory was 169.9MB in the beginning and 247.5MB in the end (delta: 77.6MB). Free memory was 137.9MB in the beginning and 207.1MB in the end (delta: -69.2MB). Peak memory consumption was 148.1MB. Max. memory is 16.1GB. [2022-12-13 16:43:22,773 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 80.7MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 16:43:22,773 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.09ms. Allocated memory is still 169.9MB. Free memory was 137.9MB in the beginning and 126.5MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 16:43:22,773 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.04ms. Allocated memory is still 169.9MB. Free memory was 126.5MB in the beginning and 124.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:43:22,774 INFO L158 Benchmark]: Boogie Preprocessor took 23.63ms. Allocated memory is still 169.9MB. Free memory was 124.4MB in the beginning and 123.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:43:22,774 INFO L158 Benchmark]: RCFGBuilder took 250.67ms. Allocated memory is still 169.9MB. Free memory was 123.4MB in the beginning and 109.7MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 16:43:22,774 INFO L158 Benchmark]: TraceAbstraction took 449314.41ms. Allocated memory was 169.9MB in the beginning and 247.5MB in the end (delta: 77.6MB). Free memory was 109.7MB in the beginning and 207.1MB in the end (delta: -97.4MB). Peak memory consumption was 120.9MB. Max. memory is 16.1GB. [2022-12-13 16:43:22,775 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 80.7MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 199.09ms. Allocated memory is still 169.9MB. Free memory was 137.9MB in the beginning and 126.5MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.04ms. Allocated memory is still 169.9MB. Free memory was 126.5MB in the beginning and 124.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.63ms. Allocated memory is still 169.9MB. Free memory was 124.4MB in the beginning and 123.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 250.67ms. Allocated memory is still 169.9MB. Free memory was 123.4MB in the beginning and 109.7MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 449314.41ms. Allocated memory was 169.9MB in the beginning and 247.5MB in the end (delta: 77.6MB). Free memory was 109.7MB in the beginning and 207.1MB in the end (delta: -97.4MB). Peak memory consumption was 120.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/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_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array18_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/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 4d58909a91b196e39d7623dd2e1e4d9b2698d6fa8ff06c2897eb5762e2e2e408 --- 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 16:43:24,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:43:24,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:43:24,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:43:24,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:43:24,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:43:24,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:43:24,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:43:24,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:43:24,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:43:24,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:43:24,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:43:24,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:43:24,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:43:24,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:43:24,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:43:24,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:43:24,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:43:24,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:43:24,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:43:24,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:43:24,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:43:24,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:43:24,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:43:24,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:43:24,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:43:24,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:43:24,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:43:24,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:43:24,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:43:24,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:43:24,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:43:24,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:43:24,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:43:24,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:43:24,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:43:24,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:43:24,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:43:24,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:43:24,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:43:24,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:43:24,124 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-12-13 16:43:24,140 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:43:24,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:43:24,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:43:24,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:43:24,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:43:24,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:43:24,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:43:24,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:43:24,142 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:43:24,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:43:24,142 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:43:24,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:43:24,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:43:24,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:43:24,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:43:24,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:43:24,143 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 16:43:24,143 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 16:43:24,143 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 16:43:24,143 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:43:24,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:43:24,144 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:43:24,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:43:24,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:43:24,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:43:24,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:43:24,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:43:24,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:43:24,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:43:24,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:43:24,149 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 16:43:24,150 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 16:43:24,150 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:43:24,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:43:24,150 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:43:24,150 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:43:24,150 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 16:43:24,151 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:43:24,151 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_ae428ed1-1bba-4b3e-9702-3629ba9710fe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d58909a91b196e39d7623dd2e1e4d9b2698d6fa8ff06c2897eb5762e2e2e408 [2022-12-13 16:43:24,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:43:24,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:43:24,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:43:24,409 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:43:24,410 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:43:24,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-patterns/array18_pattern.c [2022-12-13 16:43:27,043 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:43:27,205 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:43:27,205 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/sv-benchmarks/c/array-patterns/array18_pattern.c [2022-12-13 16:43:27,212 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/data/7499f767a/4c842892ebef474b8d97530fddc40576/FLAG473a5f68a [2022-12-13 16:43:27,226 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/data/7499f767a/4c842892ebef474b8d97530fddc40576 [2022-12-13 16:43:27,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:43:27,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:43:27,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:43:27,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:43:27,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:43:27,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:43:27" (1/1) ... [2022-12-13 16:43:27,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58134c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:27, skipping insertion in model container [2022-12-13 16:43:27,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:43:27" (1/1) ... [2022-12-13 16:43:27,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:43:27,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:43:27,376 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_ae428ed1-1bba-4b3e-9702-3629ba9710fe/sv-benchmarks/c/array-patterns/array18_pattern.c[1444,1457] [2022-12-13 16:43:27,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:43:27,400 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:43:27,409 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_ae428ed1-1bba-4b3e-9702-3629ba9710fe/sv-benchmarks/c/array-patterns/array18_pattern.c[1444,1457] [2022-12-13 16:43:27,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:43:27,432 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:43:27,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:27 WrapperNode [2022-12-13 16:43:27,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:43:27,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:43:27,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:43:27,434 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:43:27,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:27" (1/1) ... [2022-12-13 16:43:27,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:27" (1/1) ... [2022-12-13 16:43:27,466 INFO L138 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 98 [2022-12-13 16:43:27,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:43:27,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:43:27,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:43:27,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:43:27,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:27" (1/1) ... [2022-12-13 16:43:27,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:27" (1/1) ... [2022-12-13 16:43:27,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:27" (1/1) ... [2022-12-13 16:43:27,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:27" (1/1) ... [2022-12-13 16:43:27,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:27" (1/1) ... [2022-12-13 16:43:27,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:27" (1/1) ... [2022-12-13 16:43:27,490 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:27" (1/1) ... [2022-12-13 16:43:27,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:27" (1/1) ... [2022-12-13 16:43:27,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:43:27,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:43:27,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:43:27,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:43:27,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:27" (1/1) ... [2022-12-13 16:43:27,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:43:27,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:43:27,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:43:27,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:43:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:43:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 16:43:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 16:43:27,548 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 16:43:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:43:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 16:43:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:43:27,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:43:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:43:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 16:43:27,606 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:43:27,607 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:43:27,908 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:43:27,912 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:43:27,912 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-13 16:43:27,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:43:27 BoogieIcfgContainer [2022-12-13 16:43:27,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:43:27,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:43:27,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:43:27,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:43:27,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:43:27" (1/3) ... [2022-12-13 16:43:27,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5519c3d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:43:27, skipping insertion in model container [2022-12-13 16:43:27,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:27" (2/3) ... [2022-12-13 16:43:27,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5519c3d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:43:27, skipping insertion in model container [2022-12-13 16:43:27,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:43:27" (3/3) ... [2022-12-13 16:43:27,923 INFO L112 eAbstractionObserver]: Analyzing ICFG array18_pattern.c [2022-12-13 16:43:27,937 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:43:27,937 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 16:43:27,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:43:27,977 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;@39ca4f93, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:43:27,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 16:43:27,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:43:27,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 16:43:27,985 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:43:27,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:43:27,986 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:43:27,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:27,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2132324569, now seen corresponding path program 1 times [2022-12-13 16:43:27,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:43:27,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864446403] [2022-12-13 16:43:27,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:27,999 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:43:28,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:43:28,001 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:43:28,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 16:43:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:28,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 16:43:28,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:43:28,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:43:28,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:43:28,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:43:28,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864446403] [2022-12-13 16:43:28,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864446403] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:43:28,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:43:28,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:43:28,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107608185] [2022-12-13 16:43:28,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:43:28,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 16:43:28,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:43:28,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 16:43:28,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 16:43:28,122 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 16:43:28,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:43:28,141 INFO L93 Difference]: Finished difference Result 63 states and 97 transitions. [2022-12-13 16:43:28,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 16:43:28,142 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-12-13 16:43:28,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:43:28,147 INFO L225 Difference]: With dead ends: 63 [2022-12-13 16:43:28,147 INFO L226 Difference]: Without dead ends: 29 [2022-12-13 16:43:28,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 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 16:43:28,152 INFO L413 NwaCegarLoop]: 41 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, 41 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 16:43:28,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:43:28,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-13 16:43:28,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-12-13 16:43:28,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:43:28,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2022-12-13 16:43:28,183 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 15 [2022-12-13 16:43:28,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:43:28,183 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2022-12-13 16:43:28,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 16:43:28,184 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2022-12-13 16:43:28,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 16:43:28,185 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:43:28,185 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:43:28,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:43:28,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:43:28,387 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:43:28,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:28,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1872922357, now seen corresponding path program 1 times [2022-12-13 16:43:28,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:43:28,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127878559] [2022-12-13 16:43:28,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:28,393 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:43:28,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:43:28,412 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:43:28,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 16:43:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:28,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:43:28,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:43:28,687 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 16:43:28,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:43:28,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:43:28,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [127878559] [2022-12-13 16:43:28,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [127878559] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:43:28,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:43:28,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:43:28,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404980299] [2022-12-13 16:43:28,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:43:28,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:43:28,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:43:28,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:43:28,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:43:28,691 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:43:28,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:43:28,741 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-12-13 16:43:28,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:43:28,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-12-13 16:43:28,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:43:28,742 INFO L225 Difference]: With dead ends: 36 [2022-12-13 16:43:28,742 INFO L226 Difference]: Without dead ends: 32 [2022-12-13 16:43:28,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 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 16:43:28,744 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 12 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:43:28,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 84 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:43:28,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-13 16:43:28,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-12-13 16:43:28,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:43:28,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-12-13 16:43:28,752 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 30 [2022-12-13 16:43:28,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:43:28,753 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-12-13 16:43:28,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:43:28,753 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-12-13 16:43:28,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-13 16:43:28,753 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:43:28,754 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 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 16:43:28,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 16:43:28,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:43:28,956 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:43:28,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:28,958 INFO L85 PathProgramCache]: Analyzing trace with hash 212512359, now seen corresponding path program 1 times [2022-12-13 16:43:28,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:43:28,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012846797] [2022-12-13 16:43:28,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:28,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:43:28,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:43:28,964 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:43:28,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 16:43:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:29,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:43:29,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:43:29,375 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:43:29,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:43:29,375 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:43:29,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012846797] [2022-12-13 16:43:29,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012846797] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:43:29,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:43:29,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:43:29,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649439775] [2022-12-13 16:43:29,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:43:29,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:43:29,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:43:29,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:43:29,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:43:29,377 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:43:29,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:43:29,827 INFO L93 Difference]: Finished difference Result 70 states and 88 transitions. [2022-12-13 16:43:29,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:43:29,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-12-13 16:43:29,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:43:29,828 INFO L225 Difference]: With dead ends: 70 [2022-12-13 16:43:29,829 INFO L226 Difference]: Without dead ends: 46 [2022-12-13 16:43:29,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:43:29,830 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 76 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:43:29,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 58 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 16:43:29,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-12-13 16:43:29,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2022-12-13 16:43:29,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:43:29,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2022-12-13 16:43:29,837 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 35 [2022-12-13 16:43:29,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:43:29,837 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2022-12-13 16:43:29,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:43:29,838 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2022-12-13 16:43:29,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 16:43:29,838 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:43:29,838 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 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 16:43:29,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 16:43:30,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:43:30,040 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:43:30,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:30,042 INFO L85 PathProgramCache]: Analyzing trace with hash -654332553, now seen corresponding path program 1 times [2022-12-13 16:43:30,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:43:30,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854461207] [2022-12-13 16:43:30,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:30,044 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:43:30,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:43:30,047 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:43:30,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 16:43:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:30,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:43:30,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:43:30,337 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:43:30,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:43:30,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:43:30,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854461207] [2022-12-13 16:43:30,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854461207] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:43:30,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:43:30,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:43:30,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278583763] [2022-12-13 16:43:30,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:43:30,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:43:30,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:43:30,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:43:30,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:43:30,339 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:43:30,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:43:30,804 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2022-12-13 16:43:30,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:43:30,805 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2022-12-13 16:43:30,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:43:30,805 INFO L225 Difference]: With dead ends: 68 [2022-12-13 16:43:30,805 INFO L226 Difference]: Without dead ends: 40 [2022-12-13 16:43:30,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:43:30,807 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 65 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:43:30,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 57 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 16:43:30,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-12-13 16:43:30,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2022-12-13 16:43:30,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:43:30,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2022-12-13 16:43:30,817 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 38 [2022-12-13 16:43:30,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:43:30,817 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2022-12-13 16:43:30,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:43:30,817 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-12-13 16:43:30,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-13 16:43:30,818 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:43:30,818 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 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 16:43:30,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-12-13 16:43:31,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:43:31,021 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:43:31,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:31,023 INFO L85 PathProgramCache]: Analyzing trace with hash 579061941, now seen corresponding path program 1 times [2022-12-13 16:43:31,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:43:31,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448875538] [2022-12-13 16:43:31,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:31,026 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:43:31,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:43:31,030 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:43:31,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 16:43:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:31,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 16:43:31,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:43:32,164 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 29 treesize of output 25 [2022-12-13 16:43:33,597 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:43:33,602 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:43:33,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 11 [2022-12-13 16:43:33,780 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:43:33,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:43:35,016 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 63 treesize of output 59 [2022-12-13 16:43:35,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 115 treesize of output 111 [2022-12-13 16:43:54,853 WARN L233 SmtUtils]: Spent 9.93s on a formula simplification. DAG size of input: 40 DAG size of output: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:43:54,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:43:54,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448875538] [2022-12-13 16:43:54,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448875538] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:43:54,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1177518170] [2022-12-13 16:43:54,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:54,856 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 16:43:54,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 16:43:54,857 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 16:43:54,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-13 16:43:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:55,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 16:43:55,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:43:57,585 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 29 treesize of output 25 [2022-12-13 16:44:11,698 INFO L321 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-12-13 16:44:11,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 11 [2022-12-13 16:44:11,722 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:44:11,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:44:11,876 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 63 treesize of output 59 [2022-12-13 16:44:11,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 115 treesize of output 111 [2022-12-13 16:44:20,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1177518170] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:44:20,285 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:44:20,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 30 [2022-12-13 16:44:20,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095496346] [2022-12-13 16:44:20,285 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:44:20,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-13 16:44:20,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:44:20,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-13 16:44:20,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1271, Unknown=4, NotChecked=0, Total=1482 [2022-12-13 16:44:20,287 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 30 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 28 states have internal predecessors, (53), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 16:44:29,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:44:29,419 INFO L93 Difference]: Finished difference Result 118 states and 147 transitions. [2022-12-13 16:44:29,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 16:44:29,425 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 28 states have internal predecessors, (53), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 40 [2022-12-13 16:44:29,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:44:29,426 INFO L225 Difference]: With dead ends: 118 [2022-12-13 16:44:29,426 INFO L226 Difference]: Without dead ends: 88 [2022-12-13 16:44:29,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 68 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 986 ImplicationChecksByTransitivity, 47.9s TimeCoverageRelationStatistics Valid=505, Invalid=2913, Unknown=4, NotChecked=0, Total=3422 [2022-12-13 16:44:29,429 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 150 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-13 16:44:29,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 202 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-13 16:44:29,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-12-13 16:44:29,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 62. [2022-12-13 16:44:29,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 53 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 16:44:29,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2022-12-13 16:44:29,444 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 40 [2022-12-13 16:44:29,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:44:29,445 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2022-12-13 16:44:29,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 28 states have internal predecessors, (53), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 16:44:29,445 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2022-12-13 16:44:29,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 16:44:29,446 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:44:29,446 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:44:29,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-13 16:44:29,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-12-13 16:44:29,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 16:44:29,848 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:44:29,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:44:29,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1706965193, now seen corresponding path program 2 times [2022-12-13 16:44:29,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:44:29,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155888881] [2022-12-13 16:44:29,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:44:29,853 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:44:29,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:44:29,856 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:44:29,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 16:44:29,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 16:44:29,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:44:30,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 16:44:30,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:44:30,474 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:44:30,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:44:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 16:44:30,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:44:30,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155888881] [2022-12-13 16:44:30,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155888881] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:44:30,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:44:30,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2022-12-13 16:44:30,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381384436] [2022-12-13 16:44:30,767 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:44:30,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 16:44:30,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:44:30,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 16:44:30,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-12-13 16:44:30,768 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 16:44:32,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:44:32,242 INFO L93 Difference]: Finished difference Result 130 states and 160 transitions. [2022-12-13 16:44:32,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 16:44:32,243 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 42 [2022-12-13 16:44:32,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:44:32,243 INFO L225 Difference]: With dead ends: 130 [2022-12-13 16:44:32,244 INFO L226 Difference]: Without dead ends: 107 [2022-12-13 16:44:32,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2022-12-13 16:44:32,244 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 107 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:44:32,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 133 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 16:44:32,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-12-13 16:44:32,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 73. [2022-12-13 16:44:32,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 64 states have (on average 1.21875) internal successors, (78), 64 states have internal predecessors, (78), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 16:44:32,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2022-12-13 16:44:32,258 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 42 [2022-12-13 16:44:32,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:44:32,258 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2022-12-13 16:44:32,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 16:44:32,258 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2022-12-13 16:44:32,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 16:44:32,259 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:44:32,259 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-12-13 16:44:32,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-13 16:44:32,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:44:32,461 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:44:32,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:44:32,462 INFO L85 PathProgramCache]: Analyzing trace with hash 822903975, now seen corresponding path program 3 times [2022-12-13 16:44:32,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:44:32,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [599924156] [2022-12-13 16:44:32,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 16:44:32,464 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:44:32,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:44:32,467 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:44:32,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-13 16:44:32,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-13 16:44:32,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:44:32,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 16:44:32,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:44:33,281 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:44:33,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:44:33,667 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 16:44:33,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:44:33,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [599924156] [2022-12-13 16:44:33,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [599924156] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:44:33,667 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:44:33,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 18 [2022-12-13 16:44:33,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298253361] [2022-12-13 16:44:33,667 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:44:33,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 16:44:33,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:44:33,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 16:44:33,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-12-13 16:44:33,668 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 18 states, 18 states have (on average 3.5) internal successors, (63), 17 states have internal predecessors, (63), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 16:44:34,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:44:34,855 INFO L93 Difference]: Finished difference Result 123 states and 146 transitions. [2022-12-13 16:44:34,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 16:44:34,856 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 17 states have internal predecessors, (63), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 45 [2022-12-13 16:44:34,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:44:34,857 INFO L225 Difference]: With dead ends: 123 [2022-12-13 16:44:34,857 INFO L226 Difference]: Without dead ends: 95 [2022-12-13 16:44:34,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2022-12-13 16:44:34,858 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 95 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:44:34,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 173 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 16:44:34,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-12-13 16:44:34,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 75. [2022-12-13 16:44:34,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 66 states have internal predecessors, (80), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 16:44:34,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2022-12-13 16:44:34,880 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 45 [2022-12-13 16:44:34,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:44:34,881 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2022-12-13 16:44:34,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 17 states have internal predecessors, (63), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 16:44:34,881 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2022-12-13 16:44:34,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-13 16:44:34,882 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:44:34,882 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2022-12-13 16:44:34,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 16:44:35,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:44:35,084 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:44:35,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:44:35,085 INFO L85 PathProgramCache]: Analyzing trace with hash 139659495, now seen corresponding path program 4 times [2022-12-13 16:44:35,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:44:35,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307191796] [2022-12-13 16:44:35,088 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 16:44:35,088 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:44:35,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:44:35,090 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:44:35,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-13 16:44:35,203 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 16:44:35,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:44:35,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 16:44:35,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:44:35,778 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:44:35,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:44:36,282 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 16:44:36,283 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:44:36,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307191796] [2022-12-13 16:44:36,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307191796] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:44:36,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:44:36,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2022-12-13 16:44:36,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334089870] [2022-12-13 16:44:36,283 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:44:36,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 16:44:36,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:44:36,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 16:44:36,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2022-12-13 16:44:36,285 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 16:44:38,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:44:38,272 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2022-12-13 16:44:38,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 16:44:38,277 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 49 [2022-12-13 16:44:38,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:44:38,278 INFO L225 Difference]: With dead ends: 200 [2022-12-13 16:44:38,278 INFO L226 Difference]: Without dead ends: 143 [2022-12-13 16:44:38,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2022-12-13 16:44:38,279 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 180 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 16:44:38,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 212 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 16:44:38,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-12-13 16:44:38,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 131. [2022-12-13 16:44:38,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 119 states have (on average 1.2016806722689075) internal successors, (143), 119 states have internal predecessors, (143), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 16:44:38,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 157 transitions. [2022-12-13 16:44:38,306 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 157 transitions. Word has length 49 [2022-12-13 16:44:38,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:44:38,306 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 157 transitions. [2022-12-13 16:44:38,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 16:44:38,306 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 157 transitions. [2022-12-13 16:44:38,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-13 16:44:38,307 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:44:38,307 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 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] [2022-12-13 16:44:38,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-13 16:44:38,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:44:38,508 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:44:38,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:44:38,508 INFO L85 PathProgramCache]: Analyzing trace with hash 595301749, now seen corresponding path program 5 times [2022-12-13 16:44:38,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:44:38,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111655806] [2022-12-13 16:44:38,509 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 16:44:38,509 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:44:38,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:44:38,510 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:44:38,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-13 16:44:38,608 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-12-13 16:44:38,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:44:38,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 16:44:38,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:44:38,687 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 16:44:38,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:44:39,143 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 16:44:39,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:44:39,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111655806] [2022-12-13 16:44:39,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111655806] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:44:39,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:44:39,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 15 [2022-12-13 16:44:39,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465127078] [2022-12-13 16:44:39,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:44:39,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 16:44:39,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:44:39,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 16:44:39,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:44:39,145 INFO L87 Difference]: Start difference. First operand 131 states and 157 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:44:40,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:44:40,752 INFO L93 Difference]: Finished difference Result 187 states and 222 transitions. [2022-12-13 16:44:40,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 16:44:40,756 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-12-13 16:44:40,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:44:40,756 INFO L225 Difference]: With dead ends: 187 [2022-12-13 16:44:40,756 INFO L226 Difference]: Without dead ends: 128 [2022-12-13 16:44:40,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-12-13 16:44:40,757 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 110 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 16:44:40,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 149 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 16:44:40,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-12-13 16:44:40,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 100. [2022-12-13 16:44:40,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 91 states have (on average 1.1978021978021978) internal successors, (109), 91 states have internal predecessors, (109), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 16:44:40,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 119 transitions. [2022-12-13 16:44:40,775 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 119 transitions. Word has length 50 [2022-12-13 16:44:40,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:44:40,775 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 119 transitions. [2022-12-13 16:44:40,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:44:40,775 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 119 transitions. [2022-12-13 16:44:40,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 16:44:40,776 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:44:40,776 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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] [2022-12-13 16:44:40,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-12-13 16:44:40,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:44:40,977 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:44:40,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:44:40,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1673343477, now seen corresponding path program 6 times [2022-12-13 16:44:40,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:44:40,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787240546] [2022-12-13 16:44:40,980 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 16:44:40,980 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:44:40,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:44:40,983 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:44:40,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae428ed1-1bba-4b3e-9702-3629ba9710fe/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-13 16:44:41,662 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-12-13 16:44:41,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:44:41,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 57 conjunts are in the unsatisfiable core [2022-12-13 16:44:41,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:44:41,911 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 21 treesize of output 17 [2022-12-13 16:44:42,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 33 [2022-12-13 16:44:42,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:44:42,931 INFO L321 Elim1Store]: treesize reduction 70, result has 19.5 percent of original size [2022-12-13 16:44:42,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2022-12-13 16:44:43,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:44:43,505 INFO L321 Elim1Store]: treesize reduction 72, result has 19.1 percent of original size [2022-12-13 16:44:43,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 51 [2022-12-13 16:44:45,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:44:45,832 INFO L321 Elim1Store]: treesize reduction 159, result has 40.9 percent of original size [2022-12-13 16:44:45,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 65 treesize of output 141 [2022-12-13 16:44:48,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:45:54,315 WARN L233 SmtUtils]: Spent 1.09m on a formula simplification. DAG size of input: 103 DAG size of output: 87 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 16:45:54,316 INFO L321 Elim1Store]: treesize reduction 65, result has 86.6 percent of original size [2022-12-13 16:45:54,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 127 treesize of output 496