./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6c24879c 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_FNV_test4-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be1dcf4f68625d62d28b81607385317c3749a3b9c4401099e862ce9a8a6e6751 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 02:40:03,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 02:40:03,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 02:40:03,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 02:40:03,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 02:40:03,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 02:40:03,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 02:40:03,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 02:40:03,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 02:40:03,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 02:40:03,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 02:40:03,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 02:40:03,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 02:40:03,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 02:40:03,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 02:40:03,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 02:40:03,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 02:40:03,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 02:40:03,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 02:40:03,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 02:40:03,953 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 02:40:03,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 02:40:03,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 02:40:03,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 02:40:03,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 02:40:03,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 02:40:03,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 02:40:03,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 02:40:03,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 02:40:03,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 02:40:03,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 02:40:03,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 02:40:03,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 02:40:03,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 02:40:03,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 02:40:03,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 02:40:03,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 02:40:03,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 02:40:03,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 02:40:03,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 02:40:03,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 02:40:03,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 02:40:03,970 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-13 02:40:03,989 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 02:40:03,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 02:40:03,989 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 02:40:03,989 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 02:40:03,990 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 02:40:03,990 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 02:40:03,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 02:40:03,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 02:40:03,991 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 02:40:03,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 02:40:03,992 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 02:40:03,992 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 02:40:03,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 02:40:03,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 02:40:03,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 02:40:03,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 02:40:03,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 02:40:03,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 02:40:03,993 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-13 02:40:03,993 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 02:40:03,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 02:40:03,994 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 02:40:03,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 02:40:03,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 02:40:03,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 02:40:03,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 02:40:03,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:40:03,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 02:40:03,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 02:40:03,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 02:40:03,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 02:40:03,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 02:40:03,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 02:40:03,996 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be1dcf4f68625d62d28b81607385317c3749a3b9c4401099e862ce9a8a6e6751 [2022-07-13 02:40:04,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 02:40:04,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 02:40:04,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 02:40:04,202 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 02:40:04,215 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 02:40:04,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-1.i [2022-07-13 02:40:04,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c995ecea1/53af4228c49444b0a2df3939aaa2b47f/FLAG79d2fde19 [2022-07-13 02:40:04,657 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 02:40:04,658 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-1.i [2022-07-13 02:40:04,673 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c995ecea1/53af4228c49444b0a2df3939aaa2b47f/FLAG79d2fde19 [2022-07-13 02:40:05,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c995ecea1/53af4228c49444b0a2df3939aaa2b47f [2022-07-13 02:40:05,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 02:40:05,016 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 02:40:05,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 02:40:05,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 02:40:05,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 02:40:05,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:40:05" (1/1) ... [2022-07-13 02:40:05,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d3b2dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:40:05, skipping insertion in model container [2022-07-13 02:40:05,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:40:05" (1/1) ... [2022-07-13 02:40:05,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 02:40:05,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 02:40:05,349 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_FNV_test4-1.i[33021,33034] [2022-07-13 02:40:05,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:40:05,452 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 02:40:05,485 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_FNV_test4-1.i[33021,33034] [2022-07-13 02:40:05,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:40:05,576 INFO L208 MainTranslator]: Completed translation [2022-07-13 02:40:05,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:40:05 WrapperNode [2022-07-13 02:40:05,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 02:40:05,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 02:40:05,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 02:40:05,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 02:40:05,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:40:05" (1/1) ... [2022-07-13 02:40:05,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:40:05" (1/1) ... [2022-07-13 02:40:05,705 INFO L137 Inliner]: procedures = 177, calls = 349, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1159 [2022-07-13 02:40:05,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 02:40:05,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 02:40:05,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 02:40:05,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 02:40:05,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:40:05" (1/1) ... [2022-07-13 02:40:05,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:40:05" (1/1) ... [2022-07-13 02:40:05,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:40:05" (1/1) ... [2022-07-13 02:40:05,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:40:05" (1/1) ... [2022-07-13 02:40:05,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:40:05" (1/1) ... [2022-07-13 02:40:05,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:40:05" (1/1) ... [2022-07-13 02:40:05,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:40:05" (1/1) ... [2022-07-13 02:40:05,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 02:40:05,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 02:40:05,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 02:40:05,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 02:40:05,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:40:05" (1/1) ... [2022-07-13 02:40:05,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:40:05,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:40:05,857 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) [2022-07-13 02:40:05,879 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 [2022-07-13 02:40:05,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 02:40:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 02:40:05,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 02:40:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 02:40:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-13 02:40:05,889 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-13 02:40:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 02:40:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 02:40:05,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 02:40:05,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 02:40:05,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 02:40:05,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 02:40:05,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 02:40:05,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 02:40:05,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 02:40:06,110 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 02:40:06,111 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 02:40:07,116 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 02:40:07,122 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 02:40:07,127 INFO L299 CfgBuilder]: Removed 60 assume(true) statements. [2022-07-13 02:40:07,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:40:07 BoogieIcfgContainer [2022-07-13 02:40:07,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 02:40:07,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 02:40:07,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 02:40:07,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 02:40:07,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:40:05" (1/3) ... [2022-07-13 02:40:07,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74880a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:40:07, skipping insertion in model container [2022-07-13 02:40:07,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:40:05" (2/3) ... [2022-07-13 02:40:07,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74880a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:40:07, skipping insertion in model container [2022-07-13 02:40:07,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:40:07" (3/3) ... [2022-07-13 02:40:07,140 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test4-1.i [2022-07-13 02:40:07,156 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 02:40:07,156 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-13 02:40:07,196 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 02:40:07,202 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@75bbf44f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@55cf95a4 [2022-07-13 02:40:07,204 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-13 02:40:07,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 196 states have (on average 1.6887755102040816) internal successors, (331), 212 states have internal predecessors, (331), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-13 02:40:07,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-13 02:40:07,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:40:07,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-13 02:40:07,214 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:40:07,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:40:07,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1126982839, now seen corresponding path program 1 times [2022-07-13 02:40:07,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:40:07,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555796974] [2022-07-13 02:40:07,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:40:07,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:40:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:40:07,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:40:07,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:40:07,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555796974] [2022-07-13 02:40:07,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555796974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:40:07,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:40:07,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:40:07,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157545639] [2022-07-13 02:40:07,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:40:07,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:40:07,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:40:07,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:40:07,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:40:07,402 INFO L87 Difference]: Start difference. First operand has 221 states, 196 states have (on average 1.6887755102040816) internal successors, (331), 212 states have internal predecessors, (331), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:40:07,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:40:07,499 INFO L93 Difference]: Finished difference Result 615 states and 1033 transitions. [2022-07-13 02:40:07,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:40:07,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-13 02:40:07,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:40:07,517 INFO L225 Difference]: With dead ends: 615 [2022-07-13 02:40:07,518 INFO L226 Difference]: Without dead ends: 392 [2022-07-13 02:40:07,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:40:07,527 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 217 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:40:07,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 609 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:40:07,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-07-13 02:40:07,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 220. [2022-07-13 02:40:07,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 197 states have (on average 1.3299492385786802) internal successors, (262), 211 states have internal predecessors, (262), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-13 02:40:07,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 294 transitions. [2022-07-13 02:40:07,568 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 294 transitions. Word has length 6 [2022-07-13 02:40:07,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:40:07,569 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 294 transitions. [2022-07-13 02:40:07,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:40:07,569 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 294 transitions. [2022-07-13 02:40:07,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-13 02:40:07,572 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:40:07,573 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:40:07,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 02:40:07,573 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:40:07,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:40:07,574 INFO L85 PathProgramCache]: Analyzing trace with hash 765811442, now seen corresponding path program 1 times [2022-07-13 02:40:07,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:40:07,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618852507] [2022-07-13 02:40:07,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:40:07,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:40:07,769 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:40:07,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1367217815] [2022-07-13 02:40:07,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:40:07,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:40:07,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:40:07,772 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) [2022-07-13 02:40:07,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 02:40:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:40:08,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 02:40:08,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:40:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:40:08,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:40:08,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:40:08,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618852507] [2022-07-13 02:40:08,765 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:40:08,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367217815] [2022-07-13 02:40:08,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367217815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:40:08,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:40:08,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:40:08,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960906357] [2022-07-13 02:40:08,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:40:08,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:40:08,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:40:08,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:40:08,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:40:08,774 INFO L87 Difference]: Start difference. First operand 220 states and 294 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2022-07-13 02:40:08,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:40:08,860 INFO L93 Difference]: Finished difference Result 455 states and 613 transitions. [2022-07-13 02:40:08,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:40:08,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2022-07-13 02:40:08,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:40:08,867 INFO L225 Difference]: With dead ends: 455 [2022-07-13 02:40:08,867 INFO L226 Difference]: Without dead ends: 241 [2022-07-13 02:40:08,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:40:08,869 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 9 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:40:08,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 525 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:40:08,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-07-13 02:40:08,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240. [2022-07-13 02:40:08,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 217 states have (on average 1.2995391705069124) internal successors, (282), 231 states have internal predecessors, (282), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-13 02:40:08,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 314 transitions. [2022-07-13 02:40:08,891 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 314 transitions. Word has length 103 [2022-07-13 02:40:08,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:40:08,891 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 314 transitions. [2022-07-13 02:40:08,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2022-07-13 02:40:08,892 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 314 transitions. [2022-07-13 02:40:08,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-13 02:40:08,894 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:40:08,894 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:40:08,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 02:40:09,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:40:09,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:40:09,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:40:09,104 INFO L85 PathProgramCache]: Analyzing trace with hash 525571696, now seen corresponding path program 1 times [2022-07-13 02:40:09,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:40:09,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628021560] [2022-07-13 02:40:09,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:40:09,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:40:09,279 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:40:09,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525316253] [2022-07-13 02:40:09,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:40:09,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:40:09,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:40:09,287 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) [2022-07-13 02:40:09,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 02:40:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:40:10,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 2968 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 02:40:10,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:40:10,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:40:10,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:40:10,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:40:10,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628021560] [2022-07-13 02:40:10,301 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:40:10,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525316253] [2022-07-13 02:40:10,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525316253] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:40:10,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:40:10,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:40:10,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454080369] [2022-07-13 02:40:10,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:40:10,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:40:10,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:40:10,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:40:10,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:40:10,309 INFO L87 Difference]: Start difference. First operand 240 states and 314 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2022-07-13 02:40:10,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:40:10,363 INFO L93 Difference]: Finished difference Result 495 states and 653 transitions. [2022-07-13 02:40:10,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:40:10,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2022-07-13 02:40:10,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:40:10,365 INFO L225 Difference]: With dead ends: 495 [2022-07-13 02:40:10,365 INFO L226 Difference]: Without dead ends: 261 [2022-07-13 02:40:10,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:40:10,369 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 9 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 525 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 [2022-07-13 02:40:10,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 525 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:40:10,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-07-13 02:40:10,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2022-07-13 02:40:10,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 237 states have (on average 1.2742616033755274) internal successors, (302), 251 states have internal predecessors, (302), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-13 02:40:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 334 transitions. [2022-07-13 02:40:10,393 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 334 transitions. Word has length 103 [2022-07-13 02:40:10,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:40:10,394 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 334 transitions. [2022-07-13 02:40:10,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2022-07-13 02:40:10,395 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 334 transitions. [2022-07-13 02:40:10,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-13 02:40:10,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:40:10,402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:40:10,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 02:40:10,602 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,SelfDestructingSolverStorable2 [2022-07-13 02:40:10,603 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:40:10,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:40:10,603 INFO L85 PathProgramCache]: Analyzing trace with hash 919938482, now seen corresponding path program 1 times [2022-07-13 02:40:10,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:40:10,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451308702] [2022-07-13 02:40:10,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:40:10,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:40:10,759 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:40:10,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654847594] [2022-07-13 02:40:10,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:40:10,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:40:10,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:40:10,761 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) [2022-07-13 02:40:10,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 02:40:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:40:11,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 02:40:11,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:40:11,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:40:11,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:40:11,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:40:11,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451308702] [2022-07-13 02:40:11,730 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:40:11,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654847594] [2022-07-13 02:40:11,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654847594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:40:11,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:40:11,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:40:11,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116421398] [2022-07-13 02:40:11,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:40:11,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:40:11,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:40:11,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:40:11,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 02:40:11,732 INFO L87 Difference]: Start difference. First operand 260 states and 334 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2022-07-13 02:40:11,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:40:11,816 INFO L93 Difference]: Finished difference Result 505 states and 653 transitions. [2022-07-13 02:40:11,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 02:40:11,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 103 [2022-07-13 02:40:11,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:40:11,818 INFO L225 Difference]: With dead ends: 505 [2022-07-13 02:40:11,818 INFO L226 Difference]: Without dead ends: 251 [2022-07-13 02:40:11,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:40:11,819 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 239 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 562 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 [2022-07-13 02:40:11,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 562 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:40:11,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-07-13 02:40:11,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 246. [2022-07-13 02:40:11,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 223 states have (on average 1.2600896860986548) internal successors, (281), 237 states have internal predecessors, (281), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-13 02:40:11,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 313 transitions. [2022-07-13 02:40:11,826 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 313 transitions. Word has length 103 [2022-07-13 02:40:11,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:40:11,827 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 313 transitions. [2022-07-13 02:40:11,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2022-07-13 02:40:11,827 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 313 transitions. [2022-07-13 02:40:11,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-13 02:40:11,828 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:40:11,828 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:40:11,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 02:40:12,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:40:12,043 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:40:12,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:40:12,044 INFO L85 PathProgramCache]: Analyzing trace with hash 6087360, now seen corresponding path program 1 times [2022-07-13 02:40:12,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:40:12,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606039863] [2022-07-13 02:40:12,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:40:12,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:40:12,177 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:40:12,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [424307224] [2022-07-13 02:40:12,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:40:12,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:40:12,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:40:12,179 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) [2022-07-13 02:40:12,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 02:40:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:40:13,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 02:40:13,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:40:13,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:40:13,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:40:13,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:40:13,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606039863] [2022-07-13 02:40:13,339 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:40:13,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424307224] [2022-07-13 02:40:13,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424307224] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:40:13,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:40:13,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:40:13,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561341212] [2022-07-13 02:40:13,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:40:13,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:40:13,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:40:13,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:40:13,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 02:40:13,341 INFO L87 Difference]: Start difference. First operand 246 states and 313 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2022-07-13 02:40:13,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:40:13,394 INFO L93 Difference]: Finished difference Result 566 states and 720 transitions. [2022-07-13 02:40:13,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 02:40:13,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 103 [2022-07-13 02:40:13,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:40:13,396 INFO L225 Difference]: With dead ends: 566 [2022-07-13 02:40:13,396 INFO L226 Difference]: Without dead ends: 326 [2022-07-13 02:40:13,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:40:13,397 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 232 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 857 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 [2022-07-13 02:40:13,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 857 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:40:13,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-07-13 02:40:13,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 232. [2022-07-13 02:40:13,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 209 states have (on average 1.244019138755981) internal successors, (260), 223 states have internal predecessors, (260), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-13 02:40:13,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 292 transitions. [2022-07-13 02:40:13,404 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 292 transitions. Word has length 103 [2022-07-13 02:40:13,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:40:13,404 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 292 transitions. [2022-07-13 02:40:13,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2022-07-13 02:40:13,405 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 292 transitions. [2022-07-13 02:40:13,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-13 02:40:13,406 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:40:13,406 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:40:13,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 02:40:13,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:40:13,618 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:40:13,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:40:13,618 INFO L85 PathProgramCache]: Analyzing trace with hash 2030023538, now seen corresponding path program 1 times [2022-07-13 02:40:13,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:40:13,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795524529] [2022-07-13 02:40:13,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:40:13,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:40:13,761 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:40:13,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543764468] [2022-07-13 02:40:13,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:40:13,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:40:13,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:40:13,763 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) [2022-07-13 02:40:13,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 02:40:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:40:14,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 02:40:14,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:40:15,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:40:15,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:40:15,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:40:15,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795524529] [2022-07-13 02:40:15,022 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:40:15,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543764468] [2022-07-13 02:40:15,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543764468] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:40:15,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:40:15,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:40:15,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519868324] [2022-07-13 02:40:15,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:40:15,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:40:15,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:40:15,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:40:15,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 02:40:15,024 INFO L87 Difference]: Start difference. First operand 232 states and 292 transitions. Second operand has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 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) [2022-07-13 02:40:15,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:40:15,084 INFO L93 Difference]: Finished difference Result 416 states and 516 transitions. [2022-07-13 02:40:15,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 02:40:15,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 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 103 [2022-07-13 02:40:15,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:40:15,088 INFO L225 Difference]: With dead ends: 416 [2022-07-13 02:40:15,088 INFO L226 Difference]: Without dead ends: 415 [2022-07-13 02:40:15,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:40:15,090 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 105 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:40:15,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 871 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:40:15,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-07-13 02:40:15,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 413. [2022-07-13 02:40:15,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 384 states have (on average 1.2213541666666667) internal successors, (469), 398 states have internal predecessors, (469), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-13 02:40:15,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 513 transitions. [2022-07-13 02:40:15,104 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 513 transitions. Word has length 103 [2022-07-13 02:40:15,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:40:15,105 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 513 transitions. [2022-07-13 02:40:15,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 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) [2022-07-13 02:40:15,106 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 513 transitions. [2022-07-13 02:40:15,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-13 02:40:15,106 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:40:15,106 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:40:15,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 02:40:15,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:40:15,312 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:40:15,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:40:15,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1493778997, now seen corresponding path program 1 times [2022-07-13 02:40:15,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:40:15,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291530515] [2022-07-13 02:40:15,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:40:15,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:40:15,448 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:40:15,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [221984250] [2022-07-13 02:40:15,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:40:15,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:40:15,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:40:15,468 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) [2022-07-13 02:40:15,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 02:40:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:40:16,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 02:40:16,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:40:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:40:16,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:40:16,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:40:16,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291530515] [2022-07-13 02:40:16,882 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:40:16,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221984250] [2022-07-13 02:40:16,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221984250] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:40:16,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:40:16,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:40:16,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690742338] [2022-07-13 02:40:16,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:40:16,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:40:16,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:40:16,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:40:16,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 02:40:16,883 INFO L87 Difference]: Start difference. First operand 413 states and 513 transitions. Second operand has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 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) [2022-07-13 02:40:16,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:40:16,942 INFO L93 Difference]: Finished difference Result 413 states and 513 transitions. [2022-07-13 02:40:16,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 02:40:16,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 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 104 [2022-07-13 02:40:16,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:40:16,947 INFO L225 Difference]: With dead ends: 413 [2022-07-13 02:40:16,947 INFO L226 Difference]: Without dead ends: 412 [2022-07-13 02:40:16,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:40:16,948 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 135 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:40:16,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 553 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:40:16,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-07-13 02:40:16,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2022-07-13 02:40:16,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 384 states have (on average 1.21875) internal successors, (468), 397 states have internal predecessors, (468), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-13 02:40:16,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 512 transitions. [2022-07-13 02:40:16,961 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 512 transitions. Word has length 104 [2022-07-13 02:40:16,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:40:16,961 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 512 transitions. [2022-07-13 02:40:16,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 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) [2022-07-13 02:40:16,962 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 512 transitions. [2022-07-13 02:40:16,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-13 02:40:16,962 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:40:16,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:40:16,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 02:40:17,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:40:17,184 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:40:17,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:40:17,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1365413568, now seen corresponding path program 1 times [2022-07-13 02:40:17,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:40:17,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688934168] [2022-07-13 02:40:17,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:40:17,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:40:17,312 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:40:17,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1635761978] [2022-07-13 02:40:17,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:40:17,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:40:17,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:40:17,317 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) [2022-07-13 02:40:17,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 02:40:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:40:18,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 02:40:18,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:40:18,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:40:18,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:40:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:40:18,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:40:18,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688934168] [2022-07-13 02:40:18,949 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:40:18,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635761978] [2022-07-13 02:40:18,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635761978] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:40:18,949 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:40:18,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-13 02:40:18,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897482816] [2022-07-13 02:40:18,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:40:18,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 02:40:18,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:40:18,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 02:40:18,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-13 02:40:18,951 INFO L87 Difference]: Start difference. First operand 412 states and 512 transitions. Second operand has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 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) [2022-07-13 02:40:19,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:40:19,055 INFO L93 Difference]: Finished difference Result 634 states and 796 transitions. [2022-07-13 02:40:19,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 02:40:19,055 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 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 108 [2022-07-13 02:40:19,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:40:19,057 INFO L225 Difference]: With dead ends: 634 [2022-07-13 02:40:19,057 INFO L226 Difference]: Without dead ends: 600 [2022-07-13 02:40:19,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-07-13 02:40:19,059 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 707 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:40:19,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 1343 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:40:19,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-07-13 02:40:19,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2022-07-13 02:40:19,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 566 states have (on average 1.2102473498233215) internal successors, (685), 579 states have internal predecessors, (685), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2022-07-13 02:40:19,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 741 transitions. [2022-07-13 02:40:19,074 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 741 transitions. Word has length 108 [2022-07-13 02:40:19,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:40:19,074 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 741 transitions. [2022-07-13 02:40:19,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 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) [2022-07-13 02:40:19,075 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 741 transitions. [2022-07-13 02:40:19,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-13 02:40:19,076 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:40:19,077 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:40:19,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 02:40:19,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:40:19,283 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:40:19,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:40:19,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1366065166, now seen corresponding path program 1 times [2022-07-13 02:40:19,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:40:19,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587175884] [2022-07-13 02:40:19,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:40:19,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:40:19,407 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:40:19,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2072496123] [2022-07-13 02:40:19,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:40:19,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:40:19,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:40:19,409 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) [2022-07-13 02:40:19,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 02:40:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:40:21,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 2972 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 02:40:21,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:40:21,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:40:21,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:40:21,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:40:21,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587175884] [2022-07-13 02:40:21,392 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:40:21,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072496123] [2022-07-13 02:40:21,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072496123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:40:21,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:40:21,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:40:21,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831439411] [2022-07-13 02:40:21,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:40:21,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:40:21,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:40:21,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:40:21,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:40:21,395 INFO L87 Difference]: Start difference. First operand 600 states and 741 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-07-13 02:40:21,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:40:21,450 INFO L93 Difference]: Finished difference Result 1051 states and 1305 transitions. [2022-07-13 02:40:21,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:40:21,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2022-07-13 02:40:21,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:40:21,453 INFO L225 Difference]: With dead ends: 1051 [2022-07-13 02:40:21,453 INFO L226 Difference]: Without dead ends: 598 [2022-07-13 02:40:21,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:40:21,457 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 65 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:40:21,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 535 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:40:21,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-07-13 02:40:21,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2022-07-13 02:40:21,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 564 states have (on average 1.2092198581560283) internal successors, (682), 577 states have internal predecessors, (682), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2022-07-13 02:40:21,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 738 transitions. [2022-07-13 02:40:21,478 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 738 transitions. Word has length 108 [2022-07-13 02:40:21,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:40:21,478 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 738 transitions. [2022-07-13 02:40:21,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-07-13 02:40:21,479 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 738 transitions. [2022-07-13 02:40:21,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-13 02:40:21,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:40:21,481 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:40:21,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 02:40:21,707 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,SelfDestructingSolverStorable8 [2022-07-13 02:40:21,707 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:40:21,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:40:21,708 INFO L85 PathProgramCache]: Analyzing trace with hash -889816829, now seen corresponding path program 1 times [2022-07-13 02:40:21,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:40:21,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831894697] [2022-07-13 02:40:21,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:40:21,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:40:21,817 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:40:21,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [804955633] [2022-07-13 02:40:21,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:40:21,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:40:21,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:40:21,822 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) [2022-07-13 02:40:21,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 02:40:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:40:23,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 2109 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 02:40:23,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:40:23,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 02:40:23,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:40:23,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:40:23,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831894697] [2022-07-13 02:40:23,621 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:40:23,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804955633] [2022-07-13 02:40:23,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804955633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:40:23,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:40:23,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:40:23,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076724330] [2022-07-13 02:40:23,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:40:23,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:40:23,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:40:23,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:40:23,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:40:23,624 INFO L87 Difference]: Start difference. First operand 598 states and 738 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 02:40:23,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:40:23,660 INFO L93 Difference]: Finished difference Result 1136 states and 1408 transitions. [2022-07-13 02:40:23,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:40:23,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 123 [2022-07-13 02:40:23,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:40:23,665 INFO L225 Difference]: With dead ends: 1136 [2022-07-13 02:40:23,665 INFO L226 Difference]: Without dead ends: 596 [2022-07-13 02:40:23,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:40:23,666 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 15 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:40:23,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 533 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:40:23,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-07-13 02:40:23,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2022-07-13 02:40:23,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 562 states have (on average 1.208185053380783) internal successors, (679), 575 states have internal predecessors, (679), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2022-07-13 02:40:23,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 735 transitions. [2022-07-13 02:40:23,683 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 735 transitions. Word has length 123 [2022-07-13 02:40:23,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:40:23,683 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 735 transitions. [2022-07-13 02:40:23,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 02:40:23,684 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 735 transitions. [2022-07-13 02:40:23,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-13 02:40:23,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:40:23,685 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:40:23,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 02:40:23,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 02:40:23,900 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:40:23,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:40:23,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2124754754, now seen corresponding path program 1 times [2022-07-13 02:40:23,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:40:23,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380682430] [2022-07-13 02:40:23,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:40:23,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:40:23,979 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:40:23,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755460269] [2022-07-13 02:40:23,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:40:23,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:40:23,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:40:24,000 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) [2022-07-13 02:40:24,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 02:40:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:40:45,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 02:40:45,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:40:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 02:40:45,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:40:45,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:40:45,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380682430] [2022-07-13 02:40:45,551 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:40:45,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755460269] [2022-07-13 02:40:45,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755460269] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:40:45,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:40:45,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:40:45,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679248503] [2022-07-13 02:40:45,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:40:45,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:40:45,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:40:45,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:40:45,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 02:40:45,553 INFO L87 Difference]: Start difference. First operand 596 states and 735 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 02:40:45,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:40:45,590 INFO L93 Difference]: Finished difference Result 1143 states and 1433 transitions. [2022-07-13 02:40:45,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 02:40:45,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 138 [2022-07-13 02:40:45,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:40:45,593 INFO L225 Difference]: With dead ends: 1143 [2022-07-13 02:40:45,593 INFO L226 Difference]: Without dead ends: 599 [2022-07-13 02:40:45,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:40:45,595 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 2 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:40:45,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 806 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:40:45,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-07-13 02:40:45,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2022-07-13 02:40:45,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 564 states have (on average 1.2092198581560283) internal successors, (682), 578 states have internal predecessors, (682), 28 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2022-07-13 02:40:45,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 744 transitions. [2022-07-13 02:40:45,614 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 744 transitions. Word has length 138 [2022-07-13 02:40:45,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:40:45,615 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 744 transitions. [2022-07-13 02:40:45,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 02:40:45,615 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 744 transitions. [2022-07-13 02:40:45,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-13 02:40:45,617 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:40:45,617 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:40:45,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 02:40:45,831 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,SelfDestructingSolverStorable10 [2022-07-13 02:40:45,831 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:40:45,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:40:45,832 INFO L85 PathProgramCache]: Analyzing trace with hash -455907138, now seen corresponding path program 1 times [2022-07-13 02:40:45,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:40:45,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185593210] [2022-07-13 02:40:45,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:40:45,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:40:45,915 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:40:45,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651176450] [2022-07-13 02:40:45,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:40:45,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:40:45,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:40:45,918 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) [2022-07-13 02:40:45,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 02:41:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:41:41,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 1306 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 02:41:41,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:41:41,626 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 36 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 02:41:41,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:41:41,691 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-13 02:41:41,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:41:41,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185593210] [2022-07-13 02:41:41,692 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:41:41,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651176450] [2022-07-13 02:41:41,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651176450] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:41:41,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:41:41,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-13 02:41:41,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144208622] [2022-07-13 02:41:41,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:41:41,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 02:41:41,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:41:41,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 02:41:41,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 02:41:41,694 INFO L87 Difference]: Start difference. First operand 599 states and 744 transitions. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 02:41:41,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:41:41,810 INFO L93 Difference]: Finished difference Result 1157 states and 1475 transitions. [2022-07-13 02:41:41,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 02:41:41,811 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 142 [2022-07-13 02:41:41,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:41:41,813 INFO L225 Difference]: With dead ends: 1157 [2022-07-13 02:41:41,813 INFO L226 Difference]: Without dead ends: 610 [2022-07-13 02:41:41,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-07-13 02:41:41,814 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 29 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:41:41,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 803 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:41:41,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-07-13 02:41:41,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 608. [2022-07-13 02:41:41,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 572 states have (on average 1.2167832167832169) internal successors, (696), 586 states have internal predecessors, (696), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (40), 19 states have call predecessors, (40), 28 states have call successors, (40) [2022-07-13 02:41:41,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 764 transitions. [2022-07-13 02:41:41,830 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 764 transitions. Word has length 142 [2022-07-13 02:41:41,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:41:41,831 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 764 transitions. [2022-07-13 02:41:41,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 02:41:41,831 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 764 transitions. [2022-07-13 02:41:41,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-13 02:41:41,833 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:41:41,833 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:41:41,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 02:41:42,041 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,SelfDestructingSolverStorable11 [2022-07-13 02:41:42,042 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:41:42,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:41:42,042 INFO L85 PathProgramCache]: Analyzing trace with hash 2062623362, now seen corresponding path program 2 times [2022-07-13 02:41:42,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:41:42,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683046846] [2022-07-13 02:41:42,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:41:42,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:41:42,120 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:41:42,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [373708039] [2022-07-13 02:41:42,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:41:42,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:41:42,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:41:42,123 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) [2022-07-13 02:41:42,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 02:41:58,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:41:58,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:41:58,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 1426 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-13 02:41:58,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:41:58,675 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 82 proven. 25 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-13 02:41:58,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:41:58,856 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 21 proven. 54 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-13 02:41:58,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:41:58,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683046846] [2022-07-13 02:41:58,856 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:41:58,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373708039] [2022-07-13 02:41:58,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373708039] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:41:58,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:41:58,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2022-07-13 02:41:58,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017274946] [2022-07-13 02:41:58,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:41:58,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 02:41:58,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:41:58,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 02:41:58,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-07-13 02:41:58,858 INFO L87 Difference]: Start difference. First operand 608 states and 764 transitions. Second operand has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 15 states have internal predecessors, (143), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 02:41:59,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:41:59,578 INFO L93 Difference]: Finished difference Result 1218 states and 1587 transitions. [2022-07-13 02:41:59,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 02:41:59,579 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 15 states have internal predecessors, (143), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 150 [2022-07-13 02:41:59,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:41:59,581 INFO L225 Difference]: With dead ends: 1218 [2022-07-13 02:41:59,581 INFO L226 Difference]: Without dead ends: 614 [2022-07-13 02:41:59,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 284 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=234, Invalid=468, Unknown=0, NotChecked=0, Total=702 [2022-07-13 02:41:59,583 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 320 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:41:59,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 1585 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 02:41:59,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-07-13 02:41:59,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 610. [2022-07-13 02:41:59,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 573 states have (on average 1.219895287958115) internal successors, (699), 588 states have internal predecessors, (699), 28 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (46), 19 states have call predecessors, (46), 28 states have call successors, (46) [2022-07-13 02:41:59,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 773 transitions. [2022-07-13 02:41:59,601 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 773 transitions. Word has length 150 [2022-07-13 02:41:59,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:41:59,602 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 773 transitions. [2022-07-13 02:41:59,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 15 states have internal predecessors, (143), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 02:41:59,602 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 773 transitions. [2022-07-13 02:41:59,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-13 02:41:59,603 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:41:59,603 INFO L195 NwaCegarLoop]: trace histogram [24, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:41:59,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 02:41:59,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-13 02:41:59,823 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:41:59,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:41:59,824 INFO L85 PathProgramCache]: Analyzing trace with hash 850496834, now seen corresponding path program 3 times [2022-07-13 02:41:59,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:41:59,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029434876] [2022-07-13 02:41:59,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:41:59,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:41:59,904 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:41:59,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020352528] [2022-07-13 02:41:59,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:41:59,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:41:59,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:41:59,910 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:41:59,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 02:42:05,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-13 02:42:05,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:42:05,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-13 02:42:05,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:42:05,844 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 [2022-07-13 02:42:05,871 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 7 treesize of output 3 [2022-07-13 02:42:05,974 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-07-13 02:42:05,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:42:06,175 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-07-13 02:42:06,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:42:06,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029434876] [2022-07-13 02:42:06,175 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:42:06,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020352528] [2022-07-13 02:42:06,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020352528] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:42:06,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:42:06,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2022-07-13 02:42:06,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559658776] [2022-07-13 02:42:06,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:42:06,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 02:42:06,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:42:06,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 02:42:06,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-13 02:42:06,177 INFO L87 Difference]: Start difference. First operand 610 states and 773 transitions. Second operand has 10 states, 9 states have (on average 26.555555555555557) internal successors, (239), 10 states have internal predecessors, (239), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 02:42:09,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:42:09,105 INFO L93 Difference]: Finished difference Result 610 states and 773 transitions. [2022-07-13 02:42:09,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 02:42:09,106 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 26.555555555555557) internal successors, (239), 10 states have internal predecessors, (239), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 162 [2022-07-13 02:42:09,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:42:09,112 INFO L225 Difference]: With dead ends: 610 [2022-07-13 02:42:09,113 INFO L226 Difference]: Without dead ends: 608 [2022-07-13 02:42:09,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-13 02:42:09,114 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 866 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-13 02:42:09,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 1498 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-13 02:42:09,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-07-13 02:42:09,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2022-07-13 02:42:09,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 573 states have (on average 1.2146596858638743) internal successors, (696), 586 states have internal predecessors, (696), 28 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (46), 19 states have call predecessors, (46), 28 states have call successors, (46) [2022-07-13 02:42:09,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 770 transitions. [2022-07-13 02:42:09,131 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 770 transitions. Word has length 162 [2022-07-13 02:42:09,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:42:09,132 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 770 transitions. [2022-07-13 02:42:09,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 26.555555555555557) internal successors, (239), 10 states have internal predecessors, (239), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 02:42:09,132 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 770 transitions. [2022-07-13 02:42:09,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-07-13 02:42:09,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:42:09,135 INFO L195 NwaCegarLoop]: trace histogram [24, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:42:09,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 02:42:09,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-13 02:42:09,336 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:42:09,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:42:09,336 INFO L85 PathProgramCache]: Analyzing trace with hash -219460766, now seen corresponding path program 1 times [2022-07-13 02:42:09,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:42:09,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831289081] [2022-07-13 02:42:09,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:42:09,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:42:09,693 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:42:09,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561954531] [2022-07-13 02:42:09,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:42:09,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:42:09,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:42:09,695 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:42:09,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 02:42:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:42:12,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 7424 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 02:42:12,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:42:12,914 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-07-13 02:42:12,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:42:13,269 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-07-13 02:42:13,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:42:13,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831289081] [2022-07-13 02:42:13,269 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:42:13,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561954531] [2022-07-13 02:42:13,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561954531] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:42:13,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:42:13,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-07-13 02:42:13,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541906134] [2022-07-13 02:42:13,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:42:13,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 02:42:13,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:42:13,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 02:42:13,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-07-13 02:42:13,272 INFO L87 Difference]: Start difference. First operand 608 states and 770 transitions. Second operand has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 02:42:13,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:42:13,481 INFO L93 Difference]: Finished difference Result 1373 states and 1738 transitions. [2022-07-13 02:42:13,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 02:42:13,482 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 366 [2022-07-13 02:42:13,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:42:13,486 INFO L225 Difference]: With dead ends: 1373 [2022-07-13 02:42:13,486 INFO L226 Difference]: Without dead ends: 1340 [2022-07-13 02:42:13,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2022-07-13 02:42:13,490 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 2381 mSDsluCounter, 2201 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2419 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:42:13,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2419 Valid, 2557 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:42:13,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2022-07-13 02:42:13,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1340. [2022-07-13 02:42:13,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1281 states have (on average 1.199063231850117) internal successors, (1536), 1294 states have internal predecessors, (1536), 52 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (94), 43 states have call predecessors, (94), 52 states have call successors, (94) [2022-07-13 02:42:13,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1682 transitions. [2022-07-13 02:42:13,537 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1682 transitions. Word has length 366 [2022-07-13 02:42:13,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:42:13,538 INFO L495 AbstractCegarLoop]: Abstraction has 1340 states and 1682 transitions. [2022-07-13 02:42:13,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 02:42:13,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1682 transitions. [2022-07-13 02:42:13,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2022-07-13 02:42:13,549 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:42:13,550 INFO L195 NwaCegarLoop]: trace histogram [24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:42:13,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-13 02:42:13,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:42:13,759 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:42:13,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:42:13,760 INFO L85 PathProgramCache]: Analyzing trace with hash 424367110, now seen corresponding path program 2 times [2022-07-13 02:42:13,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:42:13,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646133567] [2022-07-13 02:42:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:42:13,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:42:14,583 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:42:14,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [657448903] [2022-07-13 02:42:14,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:42:14,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:42:14,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:42:14,585 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:42:14,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-13 02:42:17,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 02:42:17,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:42:17,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 02:42:17,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:42:18,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2521 trivial. 0 not checked. [2022-07-13 02:42:18,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:42:18,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:42:18,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646133567] [2022-07-13 02:42:18,594 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:42:18,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657448903] [2022-07-13 02:42:18,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657448903] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:42:18,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:42:18,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:42:18,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549039517] [2022-07-13 02:42:18,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:42:18,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:42:18,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:42:18,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:42:18,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 02:42:18,595 INFO L87 Difference]: Start difference. First operand 1340 states and 1682 transitions. Second operand has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 02:42:18,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:42:18,645 INFO L93 Difference]: Finished difference Result 1366 states and 1728 transitions. [2022-07-13 02:42:18,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 02:42:18,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 774 [2022-07-13 02:42:18,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:42:18,653 INFO L225 Difference]: With dead ends: 1366 [2022-07-13 02:42:18,654 INFO L226 Difference]: Without dead ends: 1365 [2022-07-13 02:42:18,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:42:18,655 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 109 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:42:18,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 570 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:42:18,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2022-07-13 02:42:18,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1342. [2022-07-13 02:42:18,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1283 states have (on average 1.1987529228371006) internal successors, (1538), 1296 states have internal predecessors, (1538), 52 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (94), 43 states have call predecessors, (94), 52 states have call successors, (94) [2022-07-13 02:42:18,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1684 transitions. [2022-07-13 02:42:18,707 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1684 transitions. Word has length 774 [2022-07-13 02:42:18,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:42:18,708 INFO L495 AbstractCegarLoop]: Abstraction has 1342 states and 1684 transitions. [2022-07-13 02:42:18,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 02:42:18,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1684 transitions. [2022-07-13 02:42:18,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2022-07-13 02:42:18,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:42:18,727 INFO L195 NwaCegarLoop]: trace histogram [24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:42:18,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-13 02:42:18,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-13 02:42:18,935 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:42:18,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:42:18,936 INFO L85 PathProgramCache]: Analyzing trace with hash 270479303, now seen corresponding path program 1 times [2022-07-13 02:42:18,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:42:18,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933055060] [2022-07-13 02:42:18,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:42:18,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:42:19,811 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:42:19,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25620862] [2022-07-13 02:42:19,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:42:19,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:42:19,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:42:19,813 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:42:19,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-13 02:42:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:42:26,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 19073 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 02:42:26,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:42:27,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-07-13 02:42:27,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:42:28,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-07-13 02:42:28,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:42:28,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933055060] [2022-07-13 02:42:28,290 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:42:28,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25620862] [2022-07-13 02:42:28,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25620862] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:42:28,290 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:42:28,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2022-07-13 02:42:28,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437531816] [2022-07-13 02:42:28,291 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:42:28,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-13 02:42:28,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:42:28,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-13 02:42:28,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-07-13 02:42:28,294 INFO L87 Difference]: Start difference. First operand 1342 states and 1684 transitions. Second operand has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 02:42:29,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:42:29,086 INFO L93 Difference]: Finished difference Result 1926 states and 2425 transitions. [2022-07-13 02:42:29,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 02:42:29,088 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 775 [2022-07-13 02:42:29,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:42:29,096 INFO L225 Difference]: With dead ends: 1926 [2022-07-13 02:42:29,096 INFO L226 Difference]: Without dead ends: 1891 [2022-07-13 02:42:29,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1557 GetRequests, 1528 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2022-07-13 02:42:29,099 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 3110 mSDsluCounter, 2780 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3162 SdHoareTripleChecker+Valid, 3125 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 02:42:29,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3162 Valid, 3125 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 02:42:29,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2022-07-13 02:42:29,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1891. [2022-07-13 02:42:29,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1814 states have (on average 1.195148842337376) internal successors, (2168), 1827 states have internal predecessors, (2168), 70 states have call successors, (70), 3 states have call predecessors, (70), 5 states have return successors, (130), 61 states have call predecessors, (130), 70 states have call successors, (130) [2022-07-13 02:42:29,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 2368 transitions. [2022-07-13 02:42:29,169 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 2368 transitions. Word has length 775 [2022-07-13 02:42:29,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:42:29,171 INFO L495 AbstractCegarLoop]: Abstraction has 1891 states and 2368 transitions. [2022-07-13 02:42:29,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 02:42:29,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 2368 transitions. [2022-07-13 02:42:29,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2022-07-13 02:42:29,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:42:29,260 INFO L195 NwaCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:42:29,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-13 02:42:29,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-13 02:42:29,468 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:42:29,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:42:29,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1028340852, now seen corresponding path program 2 times [2022-07-13 02:42:29,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:42:29,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199225725] [2022-07-13 02:42:29,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:42:29,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:42:31,040 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:42:31,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802800575] [2022-07-13 02:42:31,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:42:31,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:42:31,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:42:31,043 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:42:31,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-13 02:42:37,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 02:42:37,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:42:37,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 02:42:37,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:42:38,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2022-07-13 02:42:38,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:42:38,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:42:38,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199225725] [2022-07-13 02:42:38,356 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:42:38,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802800575] [2022-07-13 02:42:38,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802800575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:42:38,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:42:38,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:42:38,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035023044] [2022-07-13 02:42:38,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:42:38,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:42:38,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:42:38,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:42:38,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 02:42:38,358 INFO L87 Difference]: Start difference. First operand 1891 states and 2368 transitions. Second operand has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 02:42:38,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:42:38,420 INFO L93 Difference]: Finished difference Result 1891 states and 2368 transitions. [2022-07-13 02:42:38,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 02:42:38,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1081 [2022-07-13 02:42:38,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:42:38,427 INFO L225 Difference]: With dead ends: 1891 [2022-07-13 02:42:38,427 INFO L226 Difference]: Without dead ends: 1890 [2022-07-13 02:42:38,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 1078 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:42:38,428 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 144 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:42:38,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 478 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:42:38,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2022-07-13 02:42:38,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1890. [2022-07-13 02:42:38,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1890 states, 1814 states have (on average 1.1945975744211688) internal successors, (2167), 1826 states have internal predecessors, (2167), 70 states have call successors, (70), 3 states have call predecessors, (70), 5 states have return successors, (130), 61 states have call predecessors, (130), 70 states have call successors, (130) [2022-07-13 02:42:38,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 2367 transitions. [2022-07-13 02:42:38,481 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 2367 transitions. Word has length 1081 [2022-07-13 02:42:38,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:42:38,482 INFO L495 AbstractCegarLoop]: Abstraction has 1890 states and 2367 transitions. [2022-07-13 02:42:38,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 02:42:38,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 2367 transitions. [2022-07-13 02:42:38,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1093 [2022-07-13 02:42:38,495 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:42:38,496 INFO L195 NwaCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 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] [2022-07-13 02:42:38,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-13 02:42:38,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-13 02:42:38,704 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:42:38,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:42:38,704 INFO L85 PathProgramCache]: Analyzing trace with hash 223965045, now seen corresponding path program 1 times [2022-07-13 02:42:38,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:42:38,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095730174] [2022-07-13 02:42:38,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:42:38,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:42:40,103 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:42:40,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1104045519] [2022-07-13 02:42:40,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:42:40,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:42:40,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:42:40,105 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:42:40,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-13 02:42:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:42:50,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 27844 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 02:42:50,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:42:51,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2022-07-13 02:42:51,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:42:52,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2022-07-13 02:42:52,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:42:52,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095730174] [2022-07-13 02:42:52,897 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:42:52,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104045519] [2022-07-13 02:42:52,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104045519] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:42:52,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:42:52,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2022-07-13 02:42:52,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651420819] [2022-07-13 02:42:52,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:42:52,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 02:42:52,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:42:52,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 02:42:52,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-13 02:42:52,901 INFO L87 Difference]: Start difference. First operand 1890 states and 2367 transitions. Second operand has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-13 02:42:53,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:42:53,192 INFO L93 Difference]: Finished difference Result 1982 states and 2518 transitions. [2022-07-13 02:42:53,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 02:42:53,192 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 1092 [2022-07-13 02:42:53,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:42:53,199 INFO L225 Difference]: With dead ends: 1982 [2022-07-13 02:42:53,199 INFO L226 Difference]: Without dead ends: 1981 [2022-07-13 02:42:53,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2189 GetRequests, 2174 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2022-07-13 02:42:53,201 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 424 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:42:53,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1111 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 02:42:53,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2022-07-13 02:42:53,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1980. [2022-07-13 02:42:53,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1980 states, 1871 states have (on average 1.2047033671833245) internal successors, (2254), 1913 states have internal predecessors, (2254), 100 states have call successors, (100), 6 states have call predecessors, (100), 8 states have return successors, (160), 64 states have call predecessors, (160), 100 states have call successors, (160) [2022-07-13 02:42:53,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 2514 transitions. [2022-07-13 02:42:53,317 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 2514 transitions. Word has length 1092 [2022-07-13 02:42:53,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:42:53,319 INFO L495 AbstractCegarLoop]: Abstraction has 1980 states and 2514 transitions. [2022-07-13 02:42:53,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-13 02:42:53,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 2514 transitions. [2022-07-13 02:42:53,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1129 [2022-07-13 02:42:53,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:42:53,334 INFO L195 NwaCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:42:53,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-13 02:42:53,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:42:53,561 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:42:53,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:42:53,561 INFO L85 PathProgramCache]: Analyzing trace with hash 114945777, now seen corresponding path program 2 times [2022-07-13 02:42:53,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:42:53,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434048427] [2022-07-13 02:42:53,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:42:53,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:42:55,082 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:42:55,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1295600387] [2022-07-13 02:42:55,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:42:55,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:42:55,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:42:55,085 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:42:55,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-13 02:43:06,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:43:06,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:43:07,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 27952 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 02:43:07,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:43:08,026 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2022-07-13 02:43:08,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:43:09,130 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 4984 trivial. 0 not checked. [2022-07-13 02:43:09,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:43:09,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434048427] [2022-07-13 02:43:09,130 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:43:09,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295600387] [2022-07-13 02:43:09,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295600387] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:43:09,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:43:09,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2022-07-13 02:43:09,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635866031] [2022-07-13 02:43:09,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:43:09,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-13 02:43:09,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:43:09,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-13 02:43:09,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-13 02:43:09,133 INFO L87 Difference]: Start difference. First operand 1980 states and 2514 transitions. Second operand has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-07-13 02:43:10,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:43:10,029 INFO L93 Difference]: Finished difference Result 2162 states and 2815 transitions. [2022-07-13 02:43:10,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-13 02:43:10,036 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 1128 [2022-07-13 02:43:10,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:43:10,044 INFO L225 Difference]: With dead ends: 2162 [2022-07-13 02:43:10,044 INFO L226 Difference]: Without dead ends: 2161 [2022-07-13 02:43:10,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2273 GetRequests, 2234 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=549, Invalid=1091, Unknown=0, NotChecked=0, Total=1640 [2022-07-13 02:43:10,048 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 1405 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 02:43:10,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 1945 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 02:43:10,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2022-07-13 02:43:10,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2160. [2022-07-13 02:43:10,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2160 states, 1985 states have (on average 1.2231738035264483) internal successors, (2428), 2087 states have internal predecessors, (2428), 160 states have call successors, (160), 12 states have call predecessors, (160), 14 states have return successors, (220), 70 states have call predecessors, (220), 160 states have call successors, (220) [2022-07-13 02:43:10,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 2808 transitions. [2022-07-13 02:43:10,153 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 2808 transitions. Word has length 1128 [2022-07-13 02:43:10,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:43:10,154 INFO L495 AbstractCegarLoop]: Abstraction has 2160 states and 2808 transitions. [2022-07-13 02:43:10,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-07-13 02:43:10,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 2808 transitions. [2022-07-13 02:43:10,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1201 [2022-07-13 02:43:10,175 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:43:10,176 INFO L195 NwaCegarLoop]: trace histogram [24, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:43:10,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-13 02:43:10,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:43:10,384 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:43:10,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:43:10,384 INFO L85 PathProgramCache]: Analyzing trace with hash -764492823, now seen corresponding path program 3 times [2022-07-13 02:43:10,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:43:10,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843163655] [2022-07-13 02:43:10,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:43:10,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:43:11,858 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:43:11,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1357800314] [2022-07-13 02:43:11,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:43:11,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:43:11,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:43:11,859 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:43:11,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-13 02:43:21,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-13 02:43:21,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:43:21,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 3002 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 02:43:21,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:43:21,754 INFO L134 CoverageAnalysis]: Checked inductivity of 5520 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 5419 trivial. 0 not checked. [2022-07-13 02:43:21,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:43:21,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:43:21,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843163655] [2022-07-13 02:43:21,755 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:43:21,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357800314] [2022-07-13 02:43:21,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357800314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:43:21,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:43:21,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:43:21,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141063568] [2022-07-13 02:43:21,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:43:21,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:43:21,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:43:21,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:43:21,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:43:21,757 INFO L87 Difference]: Start difference. First operand 2160 states and 2808 transitions. Second operand has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 02:43:21,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:43:21,895 INFO L93 Difference]: Finished difference Result 2477 states and 3295 transitions. [2022-07-13 02:43:21,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 02:43:21,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1200 [2022-07-13 02:43:21,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:43:22,032 INFO L225 Difference]: With dead ends: 2477 [2022-07-13 02:43:22,033 INFO L226 Difference]: Without dead ends: 2476 [2022-07-13 02:43:22,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1203 GetRequests, 1198 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 02:43:22,033 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 464 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:43:22,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 526 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:43:22,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2022-07-13 02:43:22,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2403. [2022-07-13 02:43:22,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2403 states, 2156 states have (on average 1.24721706864564) internal successors, (2689), 2312 states have internal predecessors, (2689), 223 states have call successors, (223), 21 states have call predecessors, (223), 23 states have return successors, (283), 79 states have call predecessors, (283), 223 states have call successors, (283) [2022-07-13 02:43:22,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 3195 transitions. [2022-07-13 02:43:22,134 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 3195 transitions. Word has length 1200 [2022-07-13 02:43:22,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:43:22,135 INFO L495 AbstractCegarLoop]: Abstraction has 2403 states and 3195 transitions. [2022-07-13 02:43:22,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 02:43:22,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 3195 transitions. [2022-07-13 02:43:22,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1202 [2022-07-13 02:43:22,149 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:43:22,150 INFO L195 NwaCegarLoop]: trace histogram [24, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:43:22,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-07-13 02:43:22,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-07-13 02:43:22,364 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:43:22,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:43:22,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1026763480, now seen corresponding path program 1 times [2022-07-13 02:43:22,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:43:22,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118456305] [2022-07-13 02:43:22,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:43:22,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:43:23,738 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:43:23,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1148319605] [2022-07-13 02:43:23,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:43:23,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:43:23,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:43:23,740 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:43:23,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-13 02:43:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:43:38,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 28170 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-13 02:43:38,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:43:39,620 INFO L134 CoverageAnalysis]: Checked inductivity of 5511 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2022-07-13 02:43:39,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:43:41,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5511 backedges. 0 proven. 371 refuted. 0 times theorem prover too weak. 5140 trivial. 0 not checked. [2022-07-13 02:43:41,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:43:41,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118456305] [2022-07-13 02:43:41,109 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:43:41,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148319605] [2022-07-13 02:43:41,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148319605] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:43:41,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:43:41,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 45 [2022-07-13 02:43:41,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722106808] [2022-07-13 02:43:41,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:43:41,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-13 02:43:41,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:43:41,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-13 02:43:41,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2022-07-13 02:43:41,112 INFO L87 Difference]: Start difference. First operand 2403 states and 3195 transitions. Second operand has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2022-07-13 02:43:43,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:43:43,713 INFO L93 Difference]: Finished difference Result 3120 states and 4363 transitions. [2022-07-13 02:43:43,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-07-13 02:43:43,715 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) Word has length 1201 [2022-07-13 02:43:43,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:43:43,727 INFO L225 Difference]: With dead ends: 3120 [2022-07-13 02:43:43,727 INFO L226 Difference]: Without dead ends: 3119 [2022-07-13 02:43:43,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2443 GetRequests, 2356 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2529, Invalid=5303, Unknown=0, NotChecked=0, Total=7832 [2022-07-13 02:43:43,731 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 3567 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 2086 mSolverCounterSat, 1674 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3577 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 3760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1674 IncrementalHoareTripleChecker+Valid, 2086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 02:43:43,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3577 Valid, 1826 Invalid, 3760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1674 Valid, 2086 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 02:43:43,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2022-07-13 02:43:43,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 3099. [2022-07-13 02:43:43,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3099 states, 2612 states have (on average 1.2959418070444104) internal successors, (3385), 2972 states have internal predecessors, (3385), 439 states have call successors, (439), 45 states have call predecessors, (439), 47 states have return successors, (499), 103 states have call predecessors, (499), 439 states have call successors, (499) [2022-07-13 02:43:43,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 4323 transitions. [2022-07-13 02:43:43,848 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 4323 transitions. Word has length 1201 [2022-07-13 02:43:43,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:43:43,849 INFO L495 AbstractCegarLoop]: Abstraction has 3099 states and 4323 transitions. [2022-07-13 02:43:43,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2022-07-13 02:43:43,849 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 4323 transitions. [2022-07-13 02:43:43,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1346 [2022-07-13 02:43:43,867 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:43:43,867 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:43:44,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-07-13 02:43:44,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-13 02:43:44,087 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:43:44,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:43:44,088 INFO L85 PathProgramCache]: Analyzing trace with hash -313519816, now seen corresponding path program 2 times [2022-07-13 02:43:44,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:43:44,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161493832] [2022-07-13 02:43:44,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:43:44,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:43:45,408 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:43:45,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2026115123] [2022-07-13 02:43:45,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:43:45,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:43:45,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:43:45,410 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:43:45,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-13 02:44:00,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:44:00,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:44:01,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 28602 conjuncts, 47 conjunts are in the unsatisfiable core [2022-07-13 02:44:01,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:44:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2022-07-13 02:44:02,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:44:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 1871 refuted. 0 times theorem prover too weak. 5884 trivial. 0 not checked. [2022-07-13 02:44:05,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:44:05,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161493832] [2022-07-13 02:44:05,342 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:44:05,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026115123] [2022-07-13 02:44:05,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026115123] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:44:05,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:44:05,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47] total 93 [2022-07-13 02:44:05,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138635746] [2022-07-13 02:44:05,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:44:05,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-07-13 02:44:05,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:44:05,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-07-13 02:44:05,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2022-07-13 02:44:05,348 INFO L87 Difference]: Start difference. First operand 3099 states and 4323 transitions. Second operand has 94 states, 93 states have (on average 6.827956989247312) internal successors, (635), 94 states have internal predecessors, (635), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52)