./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 4a058bd9944921e52018f99044f11f694f824f3f09daf510330544b4558ba193 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 04:55:01,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 04:55:01,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 04:55:01,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 04:55:01,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 04:55:01,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 04:55:01,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 04:55:01,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 04:55:01,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 04:55:01,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 04:55:01,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 04:55:01,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 04:55:01,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 04:55:01,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 04:55:01,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 04:55:01,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 04:55:01,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 04:55:01,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 04:55:01,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 04:55:01,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 04:55:01,959 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 04:55:01,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 04:55:01,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 04:55:01,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 04:55:01,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 04:55:01,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 04:55:01,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 04:55:01,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 04:55:01,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 04:55:01,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 04:55:01,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 04:55:01,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 04:55:01,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 04:55:01,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 04:55:01,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 04:55:01,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 04:55:01,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 04:55:01,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 04:55:01,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 04:55:01,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 04:55:01,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 04:55:01,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 04:55:01,975 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-23 04:55:01,991 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 04:55:01,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 04:55:01,992 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 04:55:01,992 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 04:55:01,992 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 04:55:01,992 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 04:55:01,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 04:55:01,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 04:55:01,993 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 04:55:01,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 04:55:01,994 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 04:55:01,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 04:55:01,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 04:55:01,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 04:55:01,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 04:55:01,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 04:55:01,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 04:55:01,995 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 04:55:01,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 04:55:01,995 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 04:55:01,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 04:55:01,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 04:55:01,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 04:55:01,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 04:55:01,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 04:55:01,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 04:55:01,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 04:55:01,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 04:55:01,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 04:55:01,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 04:55:01,998 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-23 04:55:01,998 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-23 04:55:01,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 04:55:01,999 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a058bd9944921e52018f99044f11f694f824f3f09daf510330544b4558ba193 [2022-07-23 04:55:02,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 04:55:02,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 04:55:02,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 04:55:02,217 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 04:55:02,218 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 04:55:02,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i [2022-07-23 04:55:02,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/684934541/32933df6dec74debb049370ff93d9fd7/FLAGff6a67785 [2022-07-23 04:55:02,673 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 04:55:02,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i [2022-07-23 04:55:02,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/684934541/32933df6dec74debb049370ff93d9fd7/FLAGff6a67785 [2022-07-23 04:55:03,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/684934541/32933df6dec74debb049370ff93d9fd7 [2022-07-23 04:55:03,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 04:55:03,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 04:55:03,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 04:55:03,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 04:55:03,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 04:55:03,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 04:55:03" (1/1) ... [2022-07-23 04:55:03,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34413bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:55:03, skipping insertion in model container [2022-07-23 04:55:03,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 04:55:03" (1/1) ... [2022-07-23 04:55:03,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 04:55:03,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 04:55:03,468 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[44118,44131] [2022-07-23 04:55:03,484 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[44660,44673] [2022-07-23 04:55:03,573 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[56247,56260] [2022-07-23 04:55:03,578 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[56368,56381] [2022-07-23 04:55:03,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 04:55:03,602 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 04:55:03,625 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[44118,44131] [2022-07-23 04:55:03,630 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[44660,44673] [2022-07-23 04:55:03,666 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[56247,56260] [2022-07-23 04:55:03,667 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[56368,56381] [2022-07-23 04:55:03,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 04:55:03,741 INFO L208 MainTranslator]: Completed translation [2022-07-23 04:55:03,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:55:03 WrapperNode [2022-07-23 04:55:03,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 04:55:03,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 04:55:03,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 04:55:03,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 04:55:03,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:55:03" (1/1) ... [2022-07-23 04:55:03,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:55:03" (1/1) ... [2022-07-23 04:55:03,833 INFO L137 Inliner]: procedures = 282, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1199 [2022-07-23 04:55:03,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 04:55:03,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 04:55:03,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 04:55:03,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 04:55:03,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:55:03" (1/1) ... [2022-07-23 04:55:03,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:55:03" (1/1) ... [2022-07-23 04:55:03,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:55:03" (1/1) ... [2022-07-23 04:55:03,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:55:03" (1/1) ... [2022-07-23 04:55:03,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:55:03" (1/1) ... [2022-07-23 04:55:03,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:55:03" (1/1) ... [2022-07-23 04:55:03,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:55:03" (1/1) ... [2022-07-23 04:55:03,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 04:55:03,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 04:55:03,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 04:55:03,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 04:55:03,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:55:03" (1/1) ... [2022-07-23 04:55:03,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 04:55:03,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:55:03,972 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-23 04:55:03,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-23 04:55:03,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-23 04:55:04,000 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-23 04:55:04,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 04:55:04,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 04:55:04,000 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-07-23 04:55:04,001 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-07-23 04:55:04,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-23 04:55:04,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-23 04:55:04,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-23 04:55:04,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-23 04:55:04,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 04:55:04,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 04:55:04,001 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-07-23 04:55:04,002 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-07-23 04:55:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 04:55:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-07-23 04:55:04,002 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-07-23 04:55:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 04:55:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 04:55:04,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 04:55:04,187 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 04:55:04,188 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 04:55:04,990 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 04:55:04,995 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 04:55:04,995 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2022-07-23 04:55:04,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 04:55:04 BoogieIcfgContainer [2022-07-23 04:55:04,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 04:55:04,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 04:55:04,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 04:55:05,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 04:55:05,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 04:55:03" (1/3) ... [2022-07-23 04:55:05,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457c8426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 04:55:05, skipping insertion in model container [2022-07-23 04:55:05,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:55:03" (2/3) ... [2022-07-23 04:55:05,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457c8426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 04:55:05, skipping insertion in model container [2022-07-23 04:55:05,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 04:55:04" (3/3) ... [2022-07-23 04:55:05,003 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test6-2.i [2022-07-23 04:55:05,012 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 04:55:05,013 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-23 04:55:05,050 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 04:55:05,055 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2259ed92, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@31edef75 [2022-07-23 04:55:05,055 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-23 04:55:05,058 INFO L276 IsEmpty]: Start isEmpty. Operand has 258 states, 234 states have (on average 1.6367521367521367) internal successors, (383), 238 states have internal predecessors, (383), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-23 04:55:05,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-23 04:55:05,063 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:55:05,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:55:05,064 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 04:55:05,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:55:05,067 INFO L85 PathProgramCache]: Analyzing trace with hash -720802776, now seen corresponding path program 1 times [2022-07-23 04:55:05,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:55:05,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599224382] [2022-07-23 04:55:05,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:05,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:55:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:55:05,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:55:05,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:55:05,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599224382] [2022-07-23 04:55:05,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599224382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:55:05,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:55:05,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 04:55:05,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086623240] [2022-07-23 04:55:05,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:55:05,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-23 04:55:05,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:55:05,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-23 04:55:05,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 04:55:05,232 INFO L87 Difference]: Start difference. First operand has 258 states, 234 states have (on average 1.6367521367521367) internal successors, (383), 238 states have internal predecessors, (383), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:55:05,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:55:05,283 INFO L93 Difference]: Finished difference Result 511 states and 836 transitions. [2022-07-23 04:55:05,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-23 04:55:05,285 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-23 04:55:05,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:55:05,295 INFO L225 Difference]: With dead ends: 511 [2022-07-23 04:55:05,295 INFO L226 Difference]: Without dead ends: 251 [2022-07-23 04:55:05,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 04:55:05,304 INFO L413 NwaCegarLoop]: 331 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, 331 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 [2022-07-23 04:55:05,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 04:55:05,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-07-23 04:55:05,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2022-07-23 04:55:05,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 228 states have (on average 1.3026315789473684) internal successors, (297), 232 states have internal predecessors, (297), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-23 04:55:05,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 327 transitions. [2022-07-23 04:55:05,355 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 327 transitions. Word has length 8 [2022-07-23 04:55:05,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:55:05,356 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 327 transitions. [2022-07-23 04:55:05,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:55:05,356 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 327 transitions. [2022-07-23 04:55:05,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-23 04:55:05,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:55:05,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:55:05,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-23 04:55:05,358 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 04:55:05,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:55:05,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1810590275, now seen corresponding path program 1 times [2022-07-23 04:55:05,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:55:05,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017796944] [2022-07-23 04:55:05,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:05,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:55:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:55:05,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:55:05,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:55:05,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017796944] [2022-07-23 04:55:05,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017796944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:55:05,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:55:05,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 04:55:05,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645653250] [2022-07-23 04:55:05,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:55:05,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 04:55:05,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:55:05,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 04:55:05,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 04:55:05,459 INFO L87 Difference]: Start difference. First operand 251 states and 327 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:55:05,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:55:05,786 INFO L93 Difference]: Finished difference Result 547 states and 718 transitions. [2022-07-23 04:55:05,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 04:55:05,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-23 04:55:05,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:55:05,789 INFO L225 Difference]: With dead ends: 547 [2022-07-23 04:55:05,789 INFO L226 Difference]: Without dead ends: 405 [2022-07-23 04:55:05,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 04:55:05,791 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 179 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 04:55:05,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 869 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 04:55:05,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-07-23 04:55:05,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 253. [2022-07-23 04:55:05,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 230 states have (on average 1.3) internal successors, (299), 234 states have internal predecessors, (299), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-23 04:55:05,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 329 transitions. [2022-07-23 04:55:05,804 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 329 transitions. Word has length 10 [2022-07-23 04:55:05,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:55:05,804 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 329 transitions. [2022-07-23 04:55:05,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:55:05,805 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 329 transitions. [2022-07-23 04:55:05,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-23 04:55:05,805 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:55:05,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:55:05,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-23 04:55:05,806 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 04:55:05,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:55:05,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1739977374, now seen corresponding path program 1 times [2022-07-23 04:55:05,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:55:05,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983574436] [2022-07-23 04:55:05,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:05,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:55:05,857 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:55:05,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [38887483] [2022-07-23 04:55:05,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:05,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:55:05,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:55:05,860 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:55:05,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-23 04:55:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:55:06,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 04:55:06,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:55:06,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:55:06,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 04:55:06,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:55:06,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983574436] [2022-07-23 04:55:06,096 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:55:06,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38887483] [2022-07-23 04:55:06,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38887483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:55:06,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:55:06,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 04:55:06,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874866259] [2022-07-23 04:55:06,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:55:06,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 04:55:06,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:55:06,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 04:55:06,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 04:55:06,098 INFO L87 Difference]: Start difference. First operand 253 states and 329 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:55:06,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:55:06,153 INFO L93 Difference]: Finished difference Result 523 states and 685 transitions. [2022-07-23 04:55:06,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 04:55:06,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-07-23 04:55:06,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:55:06,155 INFO L225 Difference]: With dead ends: 523 [2022-07-23 04:55:06,155 INFO L226 Difference]: Without dead ends: 274 [2022-07-23 04:55:06,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 04:55:06,159 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 9 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 04:55:06,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 599 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 04:55:06,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-07-23 04:55:06,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 273. [2022-07-23 04:55:06,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 250 states have (on average 1.276) internal successors, (319), 254 states have internal predecessors, (319), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-23 04:55:06,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 349 transitions. [2022-07-23 04:55:06,174 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 349 transitions. Word has length 47 [2022-07-23 04:55:06,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:55:06,175 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 349 transitions. [2022-07-23 04:55:06,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:55:06,175 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 349 transitions. [2022-07-23 04:55:06,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-23 04:55:06,176 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:55:06,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:55:06,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-23 04:55:06,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:55:06,394 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 04:55:06,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:55:06,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1599428764, now seen corresponding path program 1 times [2022-07-23 04:55:06,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:55:06,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390005622] [2022-07-23 04:55:06,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:06,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:55:06,414 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:55:06,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [881555685] [2022-07-23 04:55:06,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:06,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:55:06,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:55:06,416 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:55:06,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-23 04:55:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:55:06,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 04:55:06,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:55:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:55:06,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 04:55:06,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:55:06,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390005622] [2022-07-23 04:55:06,603 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:55:06,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881555685] [2022-07-23 04:55:06,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881555685] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:55:06,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:55:06,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 04:55:06,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796971367] [2022-07-23 04:55:06,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:55:06,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 04:55:06,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:55:06,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 04:55:06,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 04:55:06,605 INFO L87 Difference]: Start difference. First operand 273 states and 349 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:55:06,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:55:06,652 INFO L93 Difference]: Finished difference Result 535 states and 687 transitions. [2022-07-23 04:55:06,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 04:55:06,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-07-23 04:55:06,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:55:06,654 INFO L225 Difference]: With dead ends: 535 [2022-07-23 04:55:06,654 INFO L226 Difference]: Without dead ends: 266 [2022-07-23 04:55:06,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 04:55:06,658 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 264 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 04:55:06,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 650 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 04:55:06,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-07-23 04:55:06,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 259. [2022-07-23 04:55:06,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 236 states have (on average 1.2627118644067796) internal successors, (298), 240 states have internal predecessors, (298), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-23 04:55:06,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 328 transitions. [2022-07-23 04:55:06,669 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 328 transitions. Word has length 47 [2022-07-23 04:55:06,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:55:06,669 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 328 transitions. [2022-07-23 04:55:06,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:55:06,669 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 328 transitions. [2022-07-23 04:55:06,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-23 04:55:06,673 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:55:06,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:55:06,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-23 04:55:06,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-23 04:55:06,891 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 04:55:06,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:55:06,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1265789014, now seen corresponding path program 1 times [2022-07-23 04:55:06,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:55:06,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560573343] [2022-07-23 04:55:06,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:06,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:55:06,911 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:55:06,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141266065] [2022-07-23 04:55:06,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:06,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:55:06,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:55:06,917 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:55:06,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-23 04:55:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:55:07,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 04:55:07,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:55:07,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:55:07,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 04:55:07,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:55:07,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560573343] [2022-07-23 04:55:07,389 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:55:07,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141266065] [2022-07-23 04:55:07,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141266065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:55:07,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:55:07,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 04:55:07,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645563610] [2022-07-23 04:55:07,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:55:07,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 04:55:07,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:55:07,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 04:55:07,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 04:55:07,391 INFO L87 Difference]: Start difference. First operand 259 states and 328 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:55:07,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:55:07,428 INFO L93 Difference]: Finished difference Result 271 states and 340 transitions. [2022-07-23 04:55:07,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 04:55:07,428 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-07-23 04:55:07,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:55:07,430 INFO L225 Difference]: With dead ends: 271 [2022-07-23 04:55:07,430 INFO L226 Difference]: Without dead ends: 269 [2022-07-23 04:55:07,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-23 04:55:07,431 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 13 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 04:55:07,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1566 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 04:55:07,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-07-23 04:55:07,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2022-07-23 04:55:07,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 243 states have (on average 1.2592592592592593) internal successors, (306), 248 states have internal predecessors, (306), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-23 04:55:07,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 338 transitions. [2022-07-23 04:55:07,437 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 338 transitions. Word has length 47 [2022-07-23 04:55:07,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:55:07,437 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 338 transitions. [2022-07-23 04:55:07,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:55:07,437 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 338 transitions. [2022-07-23 04:55:07,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-23 04:55:07,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:55:07,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:55:07,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-23 04:55:07,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:55:07,652 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 04:55:07,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:55:07,652 INFO L85 PathProgramCache]: Analyzing trace with hash 2015855482, now seen corresponding path program 1 times [2022-07-23 04:55:07,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:55:07,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110204887] [2022-07-23 04:55:07,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:07,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:55:07,731 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:55:07,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [843549990] [2022-07-23 04:55:07,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:07,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:55:07,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:55:07,739 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:55:07,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-23 04:55:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:55:08,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 04:55:08,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:55:08,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:55:08,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 04:55:08,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:55:08,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110204887] [2022-07-23 04:55:08,200 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:55:08,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843549990] [2022-07-23 04:55:08,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843549990] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:55:08,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:55:08,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 04:55:08,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112898923] [2022-07-23 04:55:08,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:55:08,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 04:55:08,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:55:08,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 04:55:08,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 04:55:08,202 INFO L87 Difference]: Start difference. First operand 269 states and 338 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:55:08,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:55:08,212 INFO L93 Difference]: Finished difference Result 535 states and 674 transitions. [2022-07-23 04:55:08,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 04:55:08,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-23 04:55:08,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:55:08,214 INFO L225 Difference]: With dead ends: 535 [2022-07-23 04:55:08,214 INFO L226 Difference]: Without dead ends: 270 [2022-07-23 04:55:08,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 04:55:08,215 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 0 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 04:55:08,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 633 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 04:55:08,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-07-23 04:55:08,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2022-07-23 04:55:08,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 244 states have (on average 1.2581967213114753) internal successors, (307), 249 states have internal predecessors, (307), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-23 04:55:08,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 339 transitions. [2022-07-23 04:55:08,221 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 339 transitions. Word has length 58 [2022-07-23 04:55:08,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:55:08,221 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 339 transitions. [2022-07-23 04:55:08,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:55:08,221 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 339 transitions. [2022-07-23 04:55:08,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-23 04:55:08,222 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:55:08,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:55:08,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-23 04:55:08,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:55:08,437 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 04:55:08,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:55:08,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1886084804, now seen corresponding path program 1 times [2022-07-23 04:55:08,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:55:08,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562694251] [2022-07-23 04:55:08,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:08,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:55:08,509 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:55:08,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923403903] [2022-07-23 04:55:08,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:08,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:55:08,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:55:08,511 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:55:08,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-23 04:55:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:55:09,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 04:55:09,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:55:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:55:09,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 04:55:09,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:55:09,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562694251] [2022-07-23 04:55:09,153 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:55:09,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923403903] [2022-07-23 04:55:09,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923403903] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:55:09,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:55:09,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 04:55:09,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102666815] [2022-07-23 04:55:09,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:55:09,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 04:55:09,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:55:09,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 04:55:09,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 04:55:09,155 INFO L87 Difference]: Start difference. First operand 270 states and 339 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:55:09,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:55:09,248 INFO L93 Difference]: Finished difference Result 690 states and 873 transitions. [2022-07-23 04:55:09,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 04:55:09,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-23 04:55:09,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:55:09,250 INFO L225 Difference]: With dead ends: 690 [2022-07-23 04:55:09,250 INFO L226 Difference]: Without dead ends: 424 [2022-07-23 04:55:09,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 04:55:09,251 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 143 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 04:55:09,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 636 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 04:55:09,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-07-23 04:55:09,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 385. [2022-07-23 04:55:09,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 356 states have (on average 1.2556179775280898) internal successors, (447), 361 states have internal predecessors, (447), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-23 04:55:09,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 485 transitions. [2022-07-23 04:55:09,261 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 485 transitions. Word has length 58 [2022-07-23 04:55:09,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:55:09,261 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 485 transitions. [2022-07-23 04:55:09,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:55:09,261 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 485 transitions. [2022-07-23 04:55:09,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-23 04:55:09,262 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:55:09,262 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:55:09,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-23 04:55:09,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:55:09,472 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 04:55:09,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:55:09,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1360052348, now seen corresponding path program 1 times [2022-07-23 04:55:09,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:55:09,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355894009] [2022-07-23 04:55:09,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:09,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:55:09,505 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:55:09,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328157248] [2022-07-23 04:55:09,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:09,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:55:09,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:55:09,506 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:55:09,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-23 04:55:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:55:09,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 04:55:09,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:55:09,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:55:09,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 04:55:10,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:55:10,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:55:10,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355894009] [2022-07-23 04:55:10,024 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:55:10,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328157248] [2022-07-23 04:55:10,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328157248] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-23 04:55:10,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 04:55:10,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 9 [2022-07-23 04:55:10,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958540851] [2022-07-23 04:55:10,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:55:10,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 04:55:10,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:55:10,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 04:55:10,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-23 04:55:10,026 INFO L87 Difference]: Start difference. First operand 385 states and 485 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 04:55:10,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:55:10,130 INFO L93 Difference]: Finished difference Result 1424 states and 1846 transitions. [2022-07-23 04:55:10,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 04:55:10,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2022-07-23 04:55:10,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:55:10,137 INFO L225 Difference]: With dead ends: 1424 [2022-07-23 04:55:10,137 INFO L226 Difference]: Without dead ends: 1088 [2022-07-23 04:55:10,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-23 04:55:10,139 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 1280 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 04:55:10,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1280 Valid, 1253 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 04:55:10,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2022-07-23 04:55:10,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 659. [2022-07-23 04:55:10,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 617 states have (on average 1.2690437601296596) internal successors, (783), 623 states have internal predecessors, (783), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (29), 25 states have call predecessors, (29), 28 states have call successors, (29) [2022-07-23 04:55:10,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 840 transitions. [2022-07-23 04:55:10,183 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 840 transitions. Word has length 62 [2022-07-23 04:55:10,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:55:10,183 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 840 transitions. [2022-07-23 04:55:10,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 04:55:10,183 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 840 transitions. [2022-07-23 04:55:10,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-23 04:55:10,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:55:10,184 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:55:10,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-23 04:55:10,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:55:10,399 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 04:55:10,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:55:10,400 INFO L85 PathProgramCache]: Analyzing trace with hash 643772401, now seen corresponding path program 1 times [2022-07-23 04:55:10,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:55:10,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235255362] [2022-07-23 04:55:10,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:10,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:55:10,431 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:55:10,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594683784] [2022-07-23 04:55:10,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:10,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:55:10,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:55:10,432 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:55:10,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-23 04:55:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:55:10,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 04:55:10,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:55:10,875 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-23 04:55:10,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 04:55:10,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:55:10,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235255362] [2022-07-23 04:55:10,876 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:55:10,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594683784] [2022-07-23 04:55:10,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594683784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:55:10,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:55:10,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 04:55:10,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718116111] [2022-07-23 04:55:10,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:55:10,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 04:55:10,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:55:10,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 04:55:10,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-23 04:55:10,878 INFO L87 Difference]: Start difference. First operand 659 states and 840 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-23 04:55:10,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:55:10,959 INFO L93 Difference]: Finished difference Result 1250 states and 1604 transitions. [2022-07-23 04:55:10,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 04:55:10,961 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 93 [2022-07-23 04:55:10,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:55:10,964 INFO L225 Difference]: With dead ends: 1250 [2022-07-23 04:55:10,964 INFO L226 Difference]: Without dead ends: 659 [2022-07-23 04:55:10,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-23 04:55:10,965 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 25 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 04:55:10,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1168 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 04:55:10,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-07-23 04:55:10,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2022-07-23 04:55:10,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 617 states have (on average 1.2690437601296596) internal successors, (783), 623 states have internal predecessors, (783), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2022-07-23 04:55:10,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 839 transitions. [2022-07-23 04:55:10,979 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 839 transitions. Word has length 93 [2022-07-23 04:55:10,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:55:10,979 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 839 transitions. [2022-07-23 04:55:10,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-23 04:55:10,980 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 839 transitions. [2022-07-23 04:55:10,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-23 04:55:10,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:55:10,980 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:55:11,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-23 04:55:11,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:55:11,190 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 04:55:11,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:55:11,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1976180910, now seen corresponding path program 1 times [2022-07-23 04:55:11,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:55:11,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886947250] [2022-07-23 04:55:11,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:11,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:55:11,228 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:55:11,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1967833936] [2022-07-23 04:55:11,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:11,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:55:11,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:55:11,230 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:55:11,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-23 04:55:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:55:11,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 04:55:11,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:55:11,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-23 04:55:11,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-23 04:55:11,685 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-23 04:55:11,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 04:55:11,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:55:11,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886947250] [2022-07-23 04:55:11,686 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:55:11,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967833936] [2022-07-23 04:55:11,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967833936] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:55:11,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:55:11,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 04:55:11,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547120301] [2022-07-23 04:55:11,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:55:11,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 04:55:11,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:55:11,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 04:55:11,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 04:55:11,687 INFO L87 Difference]: Start difference. First operand 659 states and 839 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 04:55:11,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:55:11,887 INFO L93 Difference]: Finished difference Result 949 states and 1227 transitions. [2022-07-23 04:55:11,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 04:55:11,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 98 [2022-07-23 04:55:11,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:55:11,891 INFO L225 Difference]: With dead ends: 949 [2022-07-23 04:55:11,891 INFO L226 Difference]: Without dead ends: 852 [2022-07-23 04:55:11,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 04:55:11,891 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 107 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 04:55:11,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 848 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 04:55:11,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2022-07-23 04:55:11,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 663. [2022-07-23 04:55:11,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 621 states have (on average 1.2673107890499196) internal successors, (787), 627 states have internal predecessors, (787), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2022-07-23 04:55:11,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 843 transitions. [2022-07-23 04:55:11,906 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 843 transitions. Word has length 98 [2022-07-23 04:55:11,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:55:11,907 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 843 transitions. [2022-07-23 04:55:11,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 04:55:11,907 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 843 transitions. [2022-07-23 04:55:11,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-23 04:55:11,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:55:11,908 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:55:11,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-23 04:55:12,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-23 04:55:12,124 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 04:55:12,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:55:12,124 INFO L85 PathProgramCache]: Analyzing trace with hash -553663886, now seen corresponding path program 1 times [2022-07-23 04:55:12,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:55:12,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061198323] [2022-07-23 04:55:12,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:12,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:55:12,159 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:55:12,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1394762140] [2022-07-23 04:55:12,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:12,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:55:12,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:55:12,161 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:55:12,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-23 04:55:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:55:12,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-23 04:55:12,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:55:12,751 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-23 04:55:12,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 04:55:12,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:55:12,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061198323] [2022-07-23 04:55:12,752 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:55:12,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394762140] [2022-07-23 04:55:12,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394762140] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:55:12,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:55:12,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-23 04:55:12,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212050911] [2022-07-23 04:55:12,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:55:12,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 04:55:12,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:55:12,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 04:55:12,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-23 04:55:12,754 INFO L87 Difference]: Start difference. First operand 663 states and 843 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-23 04:55:12,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:55:12,875 INFO L93 Difference]: Finished difference Result 1266 states and 1623 transitions. [2022-07-23 04:55:12,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 04:55:12,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 110 [2022-07-23 04:55:12,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:55:12,878 INFO L225 Difference]: With dead ends: 1266 [2022-07-23 04:55:12,878 INFO L226 Difference]: Without dead ends: 668 [2022-07-23 04:55:12,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-23 04:55:12,879 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 18 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 04:55:12,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2103 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 04:55:12,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-07-23 04:55:12,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 668. [2022-07-23 04:55:12,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 625 states have (on average 1.2672) internal successors, (792), 632 states have internal predecessors, (792), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (29), 25 states have call predecessors, (29), 28 states have call successors, (29) [2022-07-23 04:55:12,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 849 transitions. [2022-07-23 04:55:12,896 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 849 transitions. Word has length 110 [2022-07-23 04:55:12,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:55:12,896 INFO L495 AbstractCegarLoop]: Abstraction has 668 states and 849 transitions. [2022-07-23 04:55:12,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-23 04:55:12,897 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 849 transitions. [2022-07-23 04:55:12,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-23 04:55:12,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:55:12,897 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:55:12,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-23 04:55:13,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:55:13,113 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 04:55:13,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:55:13,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1849320704, now seen corresponding path program 1 times [2022-07-23 04:55:13,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:55:13,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407421134] [2022-07-23 04:55:13,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:13,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:55:13,147 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:55:13,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797019125] [2022-07-23 04:55:13,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:13,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:55:13,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:55:13,148 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:55:13,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-23 04:55:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:55:14,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-23 04:55:14,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:55:14,290 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-23 04:55:14,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 04:55:14,402 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-23 04:55:14,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:55:14,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407421134] [2022-07-23 04:55:14,402 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:55:14,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797019125] [2022-07-23 04:55:14,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797019125] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 04:55:14,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 04:55:14,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2022-07-23 04:55:14,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495027553] [2022-07-23 04:55:14,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 04:55:14,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-23 04:55:14,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:55:14,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-23 04:55:14,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-23 04:55:14,404 INFO L87 Difference]: Start difference. First operand 668 states and 849 transitions. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-23 04:55:14,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:55:14,621 INFO L93 Difference]: Finished difference Result 1289 states and 1655 transitions. [2022-07-23 04:55:14,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-23 04:55:14,622 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 112 [2022-07-23 04:55:14,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:55:14,624 INFO L225 Difference]: With dead ends: 1289 [2022-07-23 04:55:14,624 INFO L226 Difference]: Without dead ends: 684 [2022-07-23 04:55:14,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-07-23 04:55:14,625 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 32 mSDsluCounter, 2699 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 04:55:14,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 3005 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 04:55:14,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-07-23 04:55:14,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 681. [2022-07-23 04:55:14,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 637 states have (on average 1.271585557299843) internal successors, (810), 644 states have internal predecessors, (810), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (29), 25 states have call predecessors, (29), 28 states have call successors, (29) [2022-07-23 04:55:14,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 867 transitions. [2022-07-23 04:55:14,640 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 867 transitions. Word has length 112 [2022-07-23 04:55:14,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:55:14,641 INFO L495 AbstractCegarLoop]: Abstraction has 681 states and 867 transitions. [2022-07-23 04:55:14,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-23 04:55:14,641 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 867 transitions. [2022-07-23 04:55:14,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-23 04:55:14,642 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:55:14,642 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:55:14,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-23 04:55:14,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-23 04:55:14,855 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 04:55:14,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:55:14,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1577750638, now seen corresponding path program 2 times [2022-07-23 04:55:14,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:55:14,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874082371] [2022-07-23 04:55:14,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:14,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:55:14,906 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:55:14,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024332524] [2022-07-23 04:55:14,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 04:55:14,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:55:14,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:55:14,908 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:55:14,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-23 04:55:41,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 04:55:41,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 04:55:41,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-23 04:55:41,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:55:42,041 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 38 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-23 04:55:42,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 04:55:42,229 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-23 04:55:42,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:55:42,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874082371] [2022-07-23 04:55:42,230 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:55:42,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024332524] [2022-07-23 04:55:42,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024332524] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 04:55:42,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 04:55:42,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2022-07-23 04:55:42,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176013444] [2022-07-23 04:55:42,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 04:55:42,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-23 04:55:42,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:55:42,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-23 04:55:42,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-07-23 04:55:42,232 INFO L87 Difference]: Start difference. First operand 681 states and 867 transitions. Second operand has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-23 04:55:43,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:55:43,141 INFO L93 Difference]: Finished difference Result 1382 states and 1772 transitions. [2022-07-23 04:55:43,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-23 04:55:43,142 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2022-07-23 04:55:43,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:55:43,144 INFO L225 Difference]: With dead ends: 1382 [2022-07-23 04:55:43,144 INFO L226 Difference]: Without dead ends: 699 [2022-07-23 04:55:43,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=275, Invalid=915, Unknown=0, NotChecked=0, Total=1190 [2022-07-23 04:55:43,146 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 336 mSDsluCounter, 3026 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 3330 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 04:55:43,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 3330 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 04:55:43,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-07-23 04:55:43,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 687. [2022-07-23 04:55:43,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 643 states have (on average 1.2690513219284603) internal successors, (816), 650 states have internal predecessors, (816), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (29), 25 states have call predecessors, (29), 28 states have call successors, (29) [2022-07-23 04:55:43,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 873 transitions. [2022-07-23 04:55:43,184 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 873 transitions. Word has length 116 [2022-07-23 04:55:43,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:55:43,184 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 873 transitions. [2022-07-23 04:55:43,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-23 04:55:43,184 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 873 transitions. [2022-07-23 04:55:43,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-23 04:55:43,185 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:55:43,185 INFO L195 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:55:43,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-23 04:55:43,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-23 04:55:43,407 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 04:55:43,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:55:43,408 INFO L85 PathProgramCache]: Analyzing trace with hash -101405335, now seen corresponding path program 3 times [2022-07-23 04:55:43,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:55:43,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003077186] [2022-07-23 04:55:43,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:55:43,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:55:43,447 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:55:43,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1652507931] [2022-07-23 04:55:43,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 04:55:43,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:55:43,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:55:43,449 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:55:43,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process