./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version ff03de63 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_OAT_test1-1.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 ec105877a5c5817dc7d6d5e780267dcadb379ad27281f7d8981115c8613ba085 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 20:58:29,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 20:58:29,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 20:58:29,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 20:58:29,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 20:58:29,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 20:58:29,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 20:58:29,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 20:58:29,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 20:58:29,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 20:58:29,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 20:58:29,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 20:58:29,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 20:58:29,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 20:58:29,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 20:58:29,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 20:58:29,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 20:58:29,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 20:58:29,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 20:58:29,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 20:58:29,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 20:58:29,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 20:58:29,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 20:58:29,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 20:58:29,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 20:58:29,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 20:58:29,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 20:58:29,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 20:58:29,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 20:58:29,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 20:58:29,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 20:58:29,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 20:58:29,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 20:58:29,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 20:58:29,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 20:58:29,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 20:58:29,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 20:58:29,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 20:58:29,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 20:58:29,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 20:58:29,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 20:58:29,843 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-21 20:58:29,866 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 20:58:29,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 20:58:29,867 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 20:58:29,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 20:58:29,868 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 20:58:29,869 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 20:58:29,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 20:58:29,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 20:58:29,870 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 20:58:29,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 20:58:29,871 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 20:58:29,871 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 20:58:29,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 20:58:29,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 20:58:29,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 20:58:29,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 20:58:29,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 20:58:29,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 20:58:29,872 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-21 20:58:29,872 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 20:58:29,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 20:58:29,872 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 20:58:29,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 20:58:29,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 20:58:29,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 20:58:29,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 20:58:29,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:58:29,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 20:58:29,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 20:58:29,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 20:58:29,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 20:58:29,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 20:58:29,875 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 20:58:29,876 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 20:58:29,876 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec105877a5c5817dc7d6d5e780267dcadb379ad27281f7d8981115c8613ba085 [2021-12-21 20:58:30,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 20:58:30,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 20:58:30,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 20:58:30,097 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 20:58:30,097 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 20:58:30,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i [2021-12-21 20:58:30,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b258cdc08/37196899d187458dbbea0c75e3083644/FLAG662ef39f9 [2021-12-21 20:58:30,601 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 20:58:30,601 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i [2021-12-21 20:58:30,611 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b258cdc08/37196899d187458dbbea0c75e3083644/FLAG662ef39f9 [2021-12-21 20:58:30,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b258cdc08/37196899d187458dbbea0c75e3083644 [2021-12-21 20:58:30,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 20:58:30,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 20:58:30,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 20:58:30,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 20:58:30,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 20:58:30,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:58:30" (1/1) ... [2021-12-21 20:58:30,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f6b9e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:58:30, skipping insertion in model container [2021-12-21 20:58:30,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:58:30" (1/1) ... [2021-12-21 20:58:30,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 20:58:30,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 20:58:31,220 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_OAT_test1-1.i[33021,33034] [2021-12-21 20:58:31,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:58:31,278 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 20:58:31,307 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_OAT_test1-1.i[33021,33034] [2021-12-21 20:58:31,332 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:58:31,351 INFO L208 MainTranslator]: Completed translation [2021-12-21 20:58:31,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:58:31 WrapperNode [2021-12-21 20:58:31,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 20:58:31,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 20:58:31,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 20:58:31,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 20:58:31,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:58:31" (1/1) ... [2021-12-21 20:58:31,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:58:31" (1/1) ... [2021-12-21 20:58:31,405 INFO L137 Inliner]: procedures = 177, calls = 186, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 627 [2021-12-21 20:58:31,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 20:58:31,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 20:58:31,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 20:58:31,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 20:58:31,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:58:31" (1/1) ... [2021-12-21 20:58:31,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:58:31" (1/1) ... [2021-12-21 20:58:31,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:58:31" (1/1) ... [2021-12-21 20:58:31,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:58:31" (1/1) ... [2021-12-21 20:58:31,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:58:31" (1/1) ... [2021-12-21 20:58:31,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:58:31" (1/1) ... [2021-12-21 20:58:31,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:58:31" (1/1) ... [2021-12-21 20:58:31,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 20:58:31,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 20:58:31,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 20:58:31,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 20:58:31,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:58:31" (1/1) ... [2021-12-21 20:58:31,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:58:31,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:58:31,474 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) [2021-12-21 20:58:31,479 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 [2021-12-21 20:58:31,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 20:58:31,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 20:58:31,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 20:58:31,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 20:58:31,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-21 20:58:31,523 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-21 20:58:31,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 20:58:31,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 20:58:31,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 20:58:31,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 20:58:31,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 20:58:31,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 20:58:31,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 20:58:31,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 20:58:31,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 20:58:31,623 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 20:58:31,625 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 20:58:32,094 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 20:58:32,099 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 20:58:32,099 INFO L299 CfgBuilder]: Removed 31 assume(true) statements. [2021-12-21 20:58:32,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:58:32 BoogieIcfgContainer [2021-12-21 20:58:32,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 20:58:32,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 20:58:32,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 20:58:32,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 20:58:32,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 08:58:30" (1/3) ... [2021-12-21 20:58:32,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c2a1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:58:32, skipping insertion in model container [2021-12-21 20:58:32,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:58:31" (2/3) ... [2021-12-21 20:58:32,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c2a1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:58:32, skipping insertion in model container [2021-12-21 20:58:32,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:58:32" (3/3) ... [2021-12-21 20:58:32,106 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test1-1.i [2021-12-21 20:58:32,110 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 20:58:32,110 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-21 20:58:32,139 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 20:58:32,143 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 20:58:32,144 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-21 20:58:32,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 116 states have (on average 1.6810344827586208) internal successors, (195), 132 states have internal predecessors, (195), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-21 20:58:32,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-21 20:58:32,158 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:58:32,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-21 20:58:32,159 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:58:32,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:58:32,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1126635289, now seen corresponding path program 1 times [2021-12-21 20:58:32,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:58:32,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79924012] [2021-12-21 20:58:32,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:32,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:58:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:58:32,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:58:32,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:58:32,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79924012] [2021-12-21 20:58:32,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79924012] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:58:32,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:58:32,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 20:58:32,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664144912] [2021-12-21 20:58:32,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:58:32,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:58:32,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:58:32,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:58:32,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:58:32,285 INFO L87 Difference]: Start difference. First operand has 138 states, 116 states have (on average 1.6810344827586208) internal successors, (195), 132 states have internal predecessors, (195), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) 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) [2021-12-21 20:58:32,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:58:32,370 INFO L93 Difference]: Finished difference Result 366 states and 607 transitions. [2021-12-21 20:58:32,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:58:32,372 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 [2021-12-21 20:58:32,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:58:32,382 INFO L225 Difference]: With dead ends: 366 [2021-12-21 20:58:32,383 INFO L226 Difference]: Without dead ends: 226 [2021-12-21 20:58:32,387 INFO L932 BasicCegarLoop]: 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 [2021-12-21 20:58:32,389 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 113 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 386 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 [2021-12-21 20:58:32,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 386 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:58:32,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-12-21 20:58:32,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 137. [2021-12-21 20:58:32,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 117 states have (on average 1.3504273504273505) internal successors, (158), 131 states have internal predecessors, (158), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-21 20:58:32,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 184 transitions. [2021-12-21 20:58:32,439 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 184 transitions. Word has length 6 [2021-12-21 20:58:32,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:58:32,439 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 184 transitions. [2021-12-21 20:58:32,440 INFO L471 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) [2021-12-21 20:58:32,441 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 184 transitions. [2021-12-21 20:58:32,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-21 20:58:32,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:58:32,444 INFO L514 BasicCegarLoop]: 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] [2021-12-21 20:58:32,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 20:58:32,445 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:58:32,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:58:32,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1116651610, now seen corresponding path program 1 times [2021-12-21 20:58:32,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:58:32,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725555711] [2021-12-21 20:58:32,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:32,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:58:32,586 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:58:32,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1602698580] [2021-12-21 20:58:32,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:32,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:58:32,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:58:32,591 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) [2021-12-21 20:58:32,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 20:58:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:58:33,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 20:58:33,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:58:33,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:58:33,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:58:33,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:58:33,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725555711] [2021-12-21 20:58:33,141 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:58:33,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602698580] [2021-12-21 20:58:33,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602698580] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:58:33,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:58:33,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 20:58:33,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13386616] [2021-12-21 20:58:33,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:58:33,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:58:33,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:58:33,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:58:33,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:58:33,144 INFO L87 Difference]: Start difference. First operand 137 states and 184 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-12-21 20:58:33,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:58:33,194 INFO L93 Difference]: Finished difference Result 289 states and 393 transitions. [2021-12-21 20:58:33,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:58:33,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2021-12-21 20:58:33,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:58:33,196 INFO L225 Difference]: With dead ends: 289 [2021-12-21 20:58:33,196 INFO L226 Difference]: Without dead ends: 158 [2021-12-21 20:58:33,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:58:33,198 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 9 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 305 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 [2021-12-21 20:58:33,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 305 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:58:33,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-12-21 20:58:33,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2021-12-21 20:58:33,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 137 states have (on average 1.2992700729927007) internal successors, (178), 151 states have internal predecessors, (178), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-21 20:58:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 204 transitions. [2021-12-21 20:58:33,205 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 204 transitions. Word has length 56 [2021-12-21 20:58:33,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:58:33,206 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 204 transitions. [2021-12-21 20:58:33,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-12-21 20:58:33,206 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 204 transitions. [2021-12-21 20:58:33,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-21 20:58:33,207 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:58:33,207 INFO L514 BasicCegarLoop]: 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] [2021-12-21 20:58:33,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 20:58:33,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:58:33,422 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:58:33,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:58:33,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1391411224, now seen corresponding path program 1 times [2021-12-21 20:58:33,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:58:33,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917177215] [2021-12-21 20:58:33,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:33,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:58:33,526 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:58:33,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107399663] [2021-12-21 20:58:33,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:33,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:58:33,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:58:33,528 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) [2021-12-21 20:58:33,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 20:58:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:58:34,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 20:58:34,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:58:34,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:58:34,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:58:34,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:58:34,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917177215] [2021-12-21 20:58:34,091 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:58:34,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107399663] [2021-12-21 20:58:34,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107399663] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:58:34,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:58:34,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 20:58:34,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405595358] [2021-12-21 20:58:34,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:58:34,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:58:34,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:58:34,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:58:34,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:58:34,093 INFO L87 Difference]: Start difference. First operand 157 states and 204 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-12-21 20:58:34,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:58:34,141 INFO L93 Difference]: Finished difference Result 299 states and 393 transitions. [2021-12-21 20:58:34,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 20:58:34,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 56 [2021-12-21 20:58:34,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:58:34,143 INFO L225 Difference]: With dead ends: 299 [2021-12-21 20:58:34,143 INFO L226 Difference]: Without dead ends: 148 [2021-12-21 20:58:34,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:58:34,144 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 135 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 339 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 [2021-12-21 20:58:34,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 339 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:58:34,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-12-21 20:58:34,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 143. [2021-12-21 20:58:34,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 123 states have (on average 1.2764227642276422) internal successors, (157), 137 states have internal predecessors, (157), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-21 20:58:34,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 183 transitions. [2021-12-21 20:58:34,151 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 183 transitions. Word has length 56 [2021-12-21 20:58:34,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:58:34,151 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 183 transitions. [2021-12-21 20:58:34,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-12-21 20:58:34,152 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 183 transitions. [2021-12-21 20:58:34,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-21 20:58:34,153 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:58:34,153 INFO L514 BasicCegarLoop]: 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] [2021-12-21 20:58:34,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 20:58:34,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-21 20:58:34,356 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:58:34,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:58:34,357 INFO L85 PathProgramCache]: Analyzing trace with hash 632524954, now seen corresponding path program 1 times [2021-12-21 20:58:34,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:58:34,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926665726] [2021-12-21 20:58:34,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:34,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:58:34,448 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:58:34,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637429731] [2021-12-21 20:58:34,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:34,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:58:34,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:58:34,450 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) [2021-12-21 20:58:34,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 20:58:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:58:34,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 20:58:34,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:58:35,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:58:35,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:58:35,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:58:35,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926665726] [2021-12-21 20:58:35,105 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:58:35,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637429731] [2021-12-21 20:58:35,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637429731] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:58:35,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:58:35,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 20:58:35,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407566451] [2021-12-21 20:58:35,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:58:35,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:58:35,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:58:35,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:58:35,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:58:35,107 INFO L87 Difference]: Start difference. First operand 143 states and 183 transitions. Second operand has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-12-21 20:58:35,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:58:35,132 INFO L93 Difference]: Finished difference Result 238 states and 298 transitions. [2021-12-21 20:58:35,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 20:58:35,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 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 56 [2021-12-21 20:58:35,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:58:35,134 INFO L225 Difference]: With dead ends: 238 [2021-12-21 20:58:35,134 INFO L226 Difference]: Without dead ends: 237 [2021-12-21 20:58:35,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:58:35,135 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 55 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 498 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 [2021-12-21 20:58:35,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 498 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:58:35,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-12-21 20:58:35,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 235. [2021-12-21 20:58:35,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 212 states have (on average 1.240566037735849) internal successors, (263), 226 states have internal predecessors, (263), 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) [2021-12-21 20:58:35,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 295 transitions. [2021-12-21 20:58:35,143 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 295 transitions. Word has length 56 [2021-12-21 20:58:35,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:58:35,143 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 295 transitions. [2021-12-21 20:58:35,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-12-21 20:58:35,144 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 295 transitions. [2021-12-21 20:58:35,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-21 20:58:35,144 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:58:35,145 INFO L514 BasicCegarLoop]: 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] [2021-12-21 20:58:35,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-21 20:58:35,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:58:35,366 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:58:35,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:58:35,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1866562491, now seen corresponding path program 1 times [2021-12-21 20:58:35,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:58:35,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119927806] [2021-12-21 20:58:35,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:35,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:58:35,434 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:58:35,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172014699] [2021-12-21 20:58:35,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:35,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:58:35,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:58:35,436 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) [2021-12-21 20:58:35,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 20:58:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:58:36,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 20:58:36,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:58:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:58:36,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:58:36,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:58:36,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119927806] [2021-12-21 20:58:36,123 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:58:36,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172014699] [2021-12-21 20:58:36,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172014699] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:58:36,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:58:36,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 20:58:36,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097660477] [2021-12-21 20:58:36,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:58:36,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:58:36,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:58:36,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:58:36,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:58:36,125 INFO L87 Difference]: Start difference. First operand 235 states and 295 transitions. Second operand has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-12-21 20:58:36,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:58:36,180 INFO L93 Difference]: Finished difference Result 235 states and 295 transitions. [2021-12-21 20:58:36,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 20:58:36,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 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 57 [2021-12-21 20:58:36,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:58:36,182 INFO L225 Difference]: With dead ends: 235 [2021-12-21 20:58:36,182 INFO L226 Difference]: Without dead ends: 234 [2021-12-21 20:58:36,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:58:36,183 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 85 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 344 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 [2021-12-21 20:58:36,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 344 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:58:36,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-12-21 20:58:36,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-12-21 20:58:36,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 212 states have (on average 1.2358490566037736) internal successors, (262), 225 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) [2021-12-21 20:58:36,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 294 transitions. [2021-12-21 20:58:36,189 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 294 transitions. Word has length 57 [2021-12-21 20:58:36,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:58:36,190 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 294 transitions. [2021-12-21 20:58:36,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-12-21 20:58:36,190 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 294 transitions. [2021-12-21 20:58:36,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-21 20:58:36,191 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:58:36,191 INFO L514 BasicCegarLoop]: 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] [2021-12-21 20:58:36,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 20:58:36,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:58:36,392 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:58:36,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:58:36,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1237589276, now seen corresponding path program 1 times [2021-12-21 20:58:36,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:58:36,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086214298] [2021-12-21 20:58:36,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:36,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:58:36,494 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:58:36,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787362546] [2021-12-21 20:58:36,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:36,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:58:36,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:58:36,496 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) [2021-12-21 20:58:36,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 20:58:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:58:37,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 1523 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 20:58:37,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:58:37,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:58:37,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:58:37,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:58:37,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:58:37,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086214298] [2021-12-21 20:58:37,350 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:58:37,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787362546] [2021-12-21 20:58:37,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787362546] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:58:37,350 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 20:58:37,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-21 20:58:37,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630330748] [2021-12-21 20:58:37,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 20:58:37,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 20:58:37,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:58:37,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 20:58:37,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-21 20:58:37,352 INFO L87 Difference]: Start difference. First operand 234 states and 294 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2021-12-21 20:58:37,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:58:37,416 INFO L93 Difference]: Finished difference Result 367 states and 469 transitions. [2021-12-21 20:58:37,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 20:58:37,417 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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 61 [2021-12-21 20:58:37,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:58:37,418 INFO L225 Difference]: With dead ends: 367 [2021-12-21 20:58:37,418 INFO L226 Difference]: Without dead ends: 333 [2021-12-21 20:58:37,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-21 20:58:37,419 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 522 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:58:37,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 714 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:58:37,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-12-21 20:58:37,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2021-12-21 20:58:37,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 308 states have (on average 1.2207792207792207) internal successors, (376), 321 states have internal predecessors, (376), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-21 20:58:37,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 414 transitions. [2021-12-21 20:58:37,429 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 414 transitions. Word has length 61 [2021-12-21 20:58:37,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:58:37,430 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 414 transitions. [2021-12-21 20:58:37,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2021-12-21 20:58:37,430 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 414 transitions. [2021-12-21 20:58:37,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-21 20:58:37,431 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:58:37,431 INFO L514 BasicCegarLoop]: 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] [2021-12-21 20:58:37,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 20:58:37,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:58:37,642 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:58:37,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:58:37,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1237285228, now seen corresponding path program 1 times [2021-12-21 20:58:37,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:58:37,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001308541] [2021-12-21 20:58:37,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:37,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:58:37,756 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:58:37,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [708061696] [2021-12-21 20:58:37,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:37,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:58:37,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:58:37,762 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) [2021-12-21 20:58:37,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 20:58:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:58:38,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 20:58:38,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:58:38,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:58:38,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:58:38,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:58:38,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001308541] [2021-12-21 20:58:38,668 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:58:38,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708061696] [2021-12-21 20:58:38,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708061696] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:58:38,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:58:38,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 20:58:38,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163871236] [2021-12-21 20:58:38,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:58:38,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:58:38,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:58:38,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:58:38,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:58:38,670 INFO L87 Difference]: Start difference. First operand 333 states and 414 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2021-12-21 20:58:38,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:58:38,704 INFO L93 Difference]: Finished difference Result 606 states and 760 transitions. [2021-12-21 20:58:38,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:58:38,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2021-12-21 20:58:38,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:58:38,709 INFO L225 Difference]: With dead ends: 606 [2021-12-21 20:58:38,709 INFO L226 Difference]: Without dead ends: 331 [2021-12-21 20:58:38,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:58:38,710 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 15 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 327 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 [2021-12-21 20:58:38,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 327 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:58:38,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-12-21 20:58:38,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2021-12-21 20:58:38,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 306 states have (on average 1.2189542483660132) internal successors, (373), 319 states have internal predecessors, (373), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-21 20:58:38,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 411 transitions. [2021-12-21 20:58:38,738 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 411 transitions. Word has length 61 [2021-12-21 20:58:38,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:58:38,739 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 411 transitions. [2021-12-21 20:58:38,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2021-12-21 20:58:38,739 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 411 transitions. [2021-12-21 20:58:38,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-21 20:58:38,744 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:58:38,744 INFO L514 BasicCegarLoop]: 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] [2021-12-21 20:58:38,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 20:58:38,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:58:38,964 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:58:38,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:58:38,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1438130325, now seen corresponding path program 1 times [2021-12-21 20:58:38,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:58:38,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145145506] [2021-12-21 20:58:38,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:38,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:58:39,048 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:58:39,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496739561] [2021-12-21 20:58:39,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:39,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:58:39,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:58:39,058 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) [2021-12-21 20:58:39,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 20:58:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:58:39,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 20:58:39,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:58:39,857 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:58:39,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:58:39,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:58:39,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145145506] [2021-12-21 20:58:39,858 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:58:39,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496739561] [2021-12-21 20:58:39,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496739561] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:58:39,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:58:39,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 20:58:39,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451855806] [2021-12-21 20:58:39,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:58:39,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:58:39,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:58:39,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:58:39,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:58:39,860 INFO L87 Difference]: Start difference. First operand 331 states and 411 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 20:58:39,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:58:39,884 INFO L93 Difference]: Finished difference Result 613 states and 776 transitions. [2021-12-21 20:58:39,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 20:58:39,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 76 [2021-12-21 20:58:39,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:58:39,887 INFO L225 Difference]: With dead ends: 613 [2021-12-21 20:58:39,887 INFO L226 Difference]: Without dead ends: 334 [2021-12-21 20:58:39,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:58:39,888 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 2 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:58:39,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 503 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:58:39,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-12-21 20:58:39,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2021-12-21 20:58:39,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 308 states have (on average 1.2207792207792207) internal successors, (376), 322 states have internal predecessors, (376), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2021-12-21 20:58:39,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 417 transitions. [2021-12-21 20:58:39,900 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 417 transitions. Word has length 76 [2021-12-21 20:58:39,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:58:39,901 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 417 transitions. [2021-12-21 20:58:39,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 20:58:39,901 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 417 transitions. [2021-12-21 20:58:39,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-21 20:58:39,901 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:58:39,902 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:58:39,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-21 20:58:40,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:58:40,124 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:58:40,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:58:40,124 INFO L85 PathProgramCache]: Analyzing trace with hash 766935497, now seen corresponding path program 1 times [2021-12-21 20:58:40,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:58:40,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891359791] [2021-12-21 20:58:40,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:40,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:58:40,156 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:58:40,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1450547980] [2021-12-21 20:58:40,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:40,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:58:40,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:58:40,158 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) [2021-12-21 20:58:40,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-21 20:58:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:58:40,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-21 20:58:40,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:58:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 20:58:41,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:58:41,169 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 20:58:41,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:58:41,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891359791] [2021-12-21 20:58:41,170 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:58:41,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450547980] [2021-12-21 20:58:41,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450547980] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:58:41,170 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 20:58:41,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-21 20:58:41,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833605780] [2021-12-21 20:58:41,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 20:58:41,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 20:58:41,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:58:41,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 20:58:41,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 20:58:41,172 INFO L87 Difference]: Start difference. First operand 334 states and 417 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 20:58:41,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:58:41,268 INFO L93 Difference]: Finished difference Result 627 states and 806 transitions. [2021-12-21 20:58:41,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 20:58:41,269 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 78 [2021-12-21 20:58:41,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:58:41,270 INFO L225 Difference]: With dead ends: 627 [2021-12-21 20:58:41,270 INFO L226 Difference]: Without dead ends: 343 [2021-12-21 20:58:41,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2021-12-21 20:58:41,272 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 23 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:58:41,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 500 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:58:41,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-12-21 20:58:41,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2021-12-21 20:58:41,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 316 states have (on average 1.2278481012658229) internal successors, (388), 330 states have internal predecessors, (388), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (25), 10 states have call predecessors, (25), 19 states have call successors, (25) [2021-12-21 20:58:41,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 432 transitions. [2021-12-21 20:58:41,282 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 432 transitions. Word has length 78 [2021-12-21 20:58:41,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:58:41,283 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 432 transitions. [2021-12-21 20:58:41,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 20:58:41,283 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 432 transitions. [2021-12-21 20:58:41,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-21 20:58:41,283 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:58:41,284 INFO L514 BasicCegarLoop]: trace histogram [6, 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] [2021-12-21 20:58:41,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-21 20:58:41,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-21 20:58:41,506 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:58:41,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:58:41,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2047753493, now seen corresponding path program 2 times [2021-12-21 20:58:41,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:58:41,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916173851] [2021-12-21 20:58:41,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:41,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:58:41,540 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:58:41,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915667077] [2021-12-21 20:58:41,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 20:58:41,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:58:41,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:58:41,541 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) [2021-12-21 20:58:41,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-21 20:58:42,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 20:58:42,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:58:42,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-21 20:58:42,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:58:42,466 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 20:58:42,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:58:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 20:58:42,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:58:42,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916173851] [2021-12-21 20:58:42,709 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:58:42,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915667077] [2021-12-21 20:58:42,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915667077] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:58:42,709 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 20:58:42,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2021-12-21 20:58:42,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819353865] [2021-12-21 20:58:42,709 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 20:58:42,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-21 20:58:42,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:58:42,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-21 20:58:42,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-12-21 20:58:42,710 INFO L87 Difference]: Start difference. First operand 343 states and 432 transitions. Second operand has 15 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 20:58:43,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:58:43,553 INFO L93 Difference]: Finished difference Result 686 states and 892 transitions. [2021-12-21 20:58:43,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-21 20:58:43,554 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 82 [2021-12-21 20:58:43,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:58:43,557 INFO L225 Difference]: With dead ends: 686 [2021-12-21 20:58:43,557 INFO L226 Difference]: Without dead ends: 347 [2021-12-21 20:58:43,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 147 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=234, Invalid=468, Unknown=0, NotChecked=0, Total=702 [2021-12-21 20:58:43,559 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 186 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 20:58:43,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 1451 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 20:58:43,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-21 20:58:43,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2021-12-21 20:58:43,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 317 states have (on average 1.2334384858044165) internal successors, (391), 332 states have internal predecessors, (391), 19 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (28), 10 states have call predecessors, (28), 19 states have call successors, (28) [2021-12-21 20:58:43,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 438 transitions. [2021-12-21 20:58:43,572 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 438 transitions. Word has length 82 [2021-12-21 20:58:43,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:58:43,572 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 438 transitions. [2021-12-21 20:58:43,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 20:58:43,573 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 438 transitions. [2021-12-21 20:58:43,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-21 20:58:43,573 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:58:43,573 INFO L514 BasicCegarLoop]: trace histogram [12, 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] [2021-12-21 20:58:43,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-21 20:58:43,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-21 20:58:43,791 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:58:43,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:58:43,792 INFO L85 PathProgramCache]: Analyzing trace with hash -257363413, now seen corresponding path program 3 times [2021-12-21 20:58:43,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:58:43,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036127618] [2021-12-21 20:58:43,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:43,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:58:43,841 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:58:43,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [798333120] [2021-12-21 20:58:43,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 20:58:43,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:58:43,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:58:43,855 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) [2021-12-21 20:58:43,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-21 20:58:44,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-21 20:58:44,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:58:44,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 20:58:44,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:58:44,622 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-21 20:58:44,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:58:44,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:58:44,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036127618] [2021-12-21 20:58:44,622 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:58:44,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798333120] [2021-12-21 20:58:44,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798333120] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:58:44,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:58:44,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 20:58:44,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323982264] [2021-12-21 20:58:44,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:58:44,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 20:58:44,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:58:44,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 20:58:44,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-21 20:58:44,623 INFO L87 Difference]: Start difference. First operand 345 states and 438 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 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) [2021-12-21 20:58:44,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:58:44,718 INFO L93 Difference]: Finished difference Result 345 states and 438 transitions. [2021-12-21 20:58:44,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 20:58:44,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 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 88 [2021-12-21 20:58:44,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:58:44,720 INFO L225 Difference]: With dead ends: 345 [2021-12-21 20:58:44,720 INFO L226 Difference]: Without dead ends: 344 [2021-12-21 20:58:44,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-21 20:58:44,721 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 304 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:58:44,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 653 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:58:44,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-12-21 20:58:44,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2021-12-21 20:58:44,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 317 states have (on average 1.227129337539432) internal successors, (389), 331 states have internal predecessors, (389), 19 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (28), 10 states have call predecessors, (28), 19 states have call successors, (28) [2021-12-21 20:58:44,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 436 transitions. [2021-12-21 20:58:44,732 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 436 transitions. Word has length 88 [2021-12-21 20:58:44,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:58:44,732 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 436 transitions. [2021-12-21 20:58:44,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 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) [2021-12-21 20:58:44,732 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 436 transitions. [2021-12-21 20:58:44,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-12-21 20:58:44,737 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:58:44,737 INFO L514 BasicCegarLoop]: trace histogram [12, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:58:44,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-21 20:58:44,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-21 20:58:44,958 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:58:44,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:58:44,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1528496987, now seen corresponding path program 1 times [2021-12-21 20:58:44,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:58:44,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54666540] [2021-12-21 20:58:44,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:44,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:58:45,074 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:58:45,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [210899662] [2021-12-21 20:58:45,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:45,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:58:45,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:58:45,076 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) [2021-12-21 20:58:45,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-21 20:58:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:58:46,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 3762 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 20:58:46,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:58:46,779 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-21 20:58:46,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:58:47,093 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-21 20:58:47,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:58:47,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54666540] [2021-12-21 20:58:47,094 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:58:47,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210899662] [2021-12-21 20:58:47,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210899662] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:58:47,094 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 20:58:47,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-21 20:58:47,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107071944] [2021-12-21 20:58:47,095 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 20:58:47,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-21 20:58:47,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:58:47,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-21 20:58:47,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-12-21 20:58:47,096 INFO L87 Difference]: Start difference. First operand 344 states and 436 transitions. Second operand has 14 states, 13 states have (on average 26.53846153846154) internal successors, (345), 14 states have internal predecessors, (345), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 20:58:47,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:58:47,214 INFO L93 Difference]: Finished difference Result 467 states and 603 transitions. [2021-12-21 20:58:47,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 20:58:47,215 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 26.53846153846154) internal successors, (345), 14 states have internal predecessors, (345), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 193 [2021-12-21 20:58:47,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:58:47,217 INFO L225 Difference]: With dead ends: 467 [2021-12-21 20:58:47,217 INFO L226 Difference]: Without dead ends: 466 [2021-12-21 20:58:47,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-12-21 20:58:47,218 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 381 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:58:47,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 1523 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:58:47,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-12-21 20:58:47,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 343. [2021-12-21 20:58:47,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 317 states have (on average 1.22397476340694) internal successors, (388), 330 states have internal predecessors, (388), 19 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (28), 10 states have call predecessors, (28), 19 states have call successors, (28) [2021-12-21 20:58:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 435 transitions. [2021-12-21 20:58:47,229 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 435 transitions. Word has length 193 [2021-12-21 20:58:47,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:58:47,229 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 435 transitions. [2021-12-21 20:58:47,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 26.53846153846154) internal successors, (345), 14 states have internal predecessors, (345), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 20:58:47,230 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 435 transitions. [2021-12-21 20:58:47,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-12-21 20:58:47,231 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:58:47,231 INFO L514 BasicCegarLoop]: trace histogram [12, 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] [2021-12-21 20:58:47,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-21 20:58:47,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-21 20:58:47,450 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:58:47,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:58:47,450 INFO L85 PathProgramCache]: Analyzing trace with hash 780876539, now seen corresponding path program 1 times [2021-12-21 20:58:47,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:58:47,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963850834] [2021-12-21 20:58:47,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:47,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:58:47,625 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:58:47,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630593260] [2021-12-21 20:58:47,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:47,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:58:47,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:58:47,627 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) [2021-12-21 20:58:47,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-21 20:58:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:58:49,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 3786 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 20:58:49,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:58:49,492 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-21 20:58:49,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:58:49,797 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-21 20:58:49,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:58:49,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963850834] [2021-12-21 20:58:49,798 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:58:49,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630593260] [2021-12-21 20:58:49,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630593260] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:58:49,798 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 20:58:49,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-12-21 20:58:49,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041844341] [2021-12-21 20:58:49,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 20:58:49,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-21 20:58:49,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:58:49,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-21 20:58:49,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-12-21 20:58:49,799 INFO L87 Difference]: Start difference. First operand 343 states and 435 transitions. Second operand has 16 states, 16 states have (on average 22.0) internal successors, (352), 16 states have internal predecessors, (352), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 20:58:49,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:58:49,946 INFO L93 Difference]: Finished difference Result 752 states and 955 transitions. [2021-12-21 20:58:49,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 20:58:49,946 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 22.0) internal successors, (352), 16 states have internal predecessors, (352), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 198 [2021-12-21 20:58:49,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:58:49,949 INFO L225 Difference]: With dead ends: 752 [2021-12-21 20:58:49,949 INFO L226 Difference]: Without dead ends: 719 [2021-12-21 20:58:49,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-12-21 20:58:49,951 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 1190 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:58:49,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1209 Valid, 2129 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:58:49,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2021-12-21 20:58:49,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 719. [2021-12-21 20:58:49,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 681 states have (on average 1.198237885462555) internal successors, (816), 694 states have internal predecessors, (816), 31 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (52), 22 states have call predecessors, (52), 31 states have call successors, (52) [2021-12-21 20:58:49,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 899 transitions. [2021-12-21 20:58:49,968 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 899 transitions. Word has length 198 [2021-12-21 20:58:49,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:58:49,969 INFO L470 AbstractCegarLoop]: Abstraction has 719 states and 899 transitions. [2021-12-21 20:58:49,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 22.0) internal successors, (352), 16 states have internal predecessors, (352), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 20:58:49,969 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 899 transitions. [2021-12-21 20:58:49,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2021-12-21 20:58:49,973 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:58:49,973 INFO L514 BasicCegarLoop]: trace histogram [12, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:58:50,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-21 20:58:50,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-21 20:58:50,187 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:58:50,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:58:50,187 INFO L85 PathProgramCache]: Analyzing trace with hash 932289851, now seen corresponding path program 2 times [2021-12-21 20:58:50,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:58:50,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383830850] [2021-12-21 20:58:50,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:50,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:58:50,606 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:58:50,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [10956340] [2021-12-21 20:58:50,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 20:58:50,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:58:50,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:58:50,608 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) [2021-12-21 20:58:50,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-21 20:58:52,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-21 20:58:52,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:58:52,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 20:58:52,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:58:53,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1244 trivial. 0 not checked. [2021-12-21 20:58:53,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:58:53,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:58:53,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383830850] [2021-12-21 20:58:53,124 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:58:53,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10956340] [2021-12-21 20:58:53,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10956340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:58:53,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:58:53,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 20:58:53,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664440090] [2021-12-21 20:58:53,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:58:53,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:58:53,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:58:53,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:58:53,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:58:53,126 INFO L87 Difference]: Start difference. First operand 719 states and 899 transitions. Second operand has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2021-12-21 20:58:53,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:58:53,169 INFO L93 Difference]: Finished difference Result 745 states and 945 transitions. [2021-12-21 20:58:53,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 20:58:53,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 418 [2021-12-21 20:58:53,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:58:53,172 INFO L225 Difference]: With dead ends: 745 [2021-12-21 20:58:53,172 INFO L226 Difference]: Without dead ends: 744 [2021-12-21 20:58:53,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:58:53,173 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 65 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 364 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 [2021-12-21 20:58:53,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 364 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:58:53,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-12-21 20:58:53,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 721. [2021-12-21 20:58:53,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 683 states have (on average 1.197657393850659) internal successors, (818), 696 states have internal predecessors, (818), 31 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (52), 22 states have call predecessors, (52), 31 states have call successors, (52) [2021-12-21 20:58:53,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 901 transitions. [2021-12-21 20:58:53,191 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 901 transitions. Word has length 418 [2021-12-21 20:58:53,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:58:53,192 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 901 transitions. [2021-12-21 20:58:53,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2021-12-21 20:58:53,192 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 901 transitions. [2021-12-21 20:58:53,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2021-12-21 20:58:53,196 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:58:53,196 INFO L514 BasicCegarLoop]: trace histogram [12, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:58:53,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-21 20:58:53,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-21 20:58:53,425 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:58:53,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:58:53,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1163785260, now seen corresponding path program 1 times [2021-12-21 20:58:53,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:58:53,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138155063] [2021-12-21 20:58:53,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:53,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:58:53,852 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:58:53,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1890442811] [2021-12-21 20:58:53,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:53,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:58:53,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:58:53,856 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) [2021-12-21 20:58:53,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-21 20:58:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:58:57,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 9679 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-21 20:58:57,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:58:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1244 backedges. 0 proven. 1150 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-21 20:58:58,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:58:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1244 backedges. 0 proven. 1150 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-21 20:58:58,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:58:58,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138155063] [2021-12-21 20:58:58,618 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:58:58,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890442811] [2021-12-21 20:58:58,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890442811] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:58:58,618 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 20:58:58,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2021-12-21 20:58:58,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067695678] [2021-12-21 20:58:58,618 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 20:58:58,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-21 20:58:58,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:58:58,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-21 20:58:58,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-12-21 20:58:58,620 INFO L87 Difference]: Start difference. First operand 721 states and 901 transitions. Second operand has 21 states, 21 states have (on average 24.80952380952381) internal successors, (521), 21 states have internal predecessors, (521), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 20:58:58,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:58:58,819 INFO L93 Difference]: Finished difference Result 1038 states and 1306 transitions. [2021-12-21 20:58:58,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-21 20:58:58,819 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 24.80952380952381) internal successors, (521), 21 states have internal predecessors, (521), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 419 [2021-12-21 20:58:58,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:58:58,823 INFO L225 Difference]: With dead ends: 1038 [2021-12-21 20:58:58,823 INFO L226 Difference]: Without dead ends: 1003 [2021-12-21 20:58:58,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 816 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2021-12-21 20:58:58,826 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 1261 mSDsluCounter, 2167 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:58:58,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1287 Valid, 2411 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:58:58,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2021-12-21 20:58:58,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 1003. [2021-12-21 20:58:58,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 956 states have (on average 1.1914225941422594) internal successors, (1139), 969 states have internal predecessors, (1139), 40 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (70), 31 states have call predecessors, (70), 40 states have call successors, (70) [2021-12-21 20:58:58,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1249 transitions. [2021-12-21 20:58:58,854 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1249 transitions. Word has length 419 [2021-12-21 20:58:58,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:58:58,855 INFO L470 AbstractCegarLoop]: Abstraction has 1003 states and 1249 transitions. [2021-12-21 20:58:58,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 24.80952380952381) internal successors, (521), 21 states have internal predecessors, (521), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 20:58:58,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1249 transitions. [2021-12-21 20:58:58,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2021-12-21 20:58:58,863 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:58:58,863 INFO L514 BasicCegarLoop]: trace histogram [12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:58:58,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-21 20:58:59,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:58:59,091 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:58:59,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:58:59,092 INFO L85 PathProgramCache]: Analyzing trace with hash 465313109, now seen corresponding path program 2 times [2021-12-21 20:58:59,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:58:59,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375531806] [2021-12-21 20:58:59,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:58:59,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:58:59,622 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:58:59,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296660370] [2021-12-21 20:58:59,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 20:58:59,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:58:59,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:58:59,623 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) [2021-12-21 20:58:59,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-21 20:59:02,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-21 20:59:02,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:59:02,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 20:59:02,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:59:03,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2561 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2561 trivial. 0 not checked. [2021-12-21 20:59:03,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:59:03,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:59:03,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375531806] [2021-12-21 20:59:03,572 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:59:03,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296660370] [2021-12-21 20:59:03,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296660370] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:59:03,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:59:03,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 20:59:03,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047824833] [2021-12-21 20:59:03,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:59:03,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:59:03,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:59:03,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:59:03,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:59:03,573 INFO L87 Difference]: Start difference. First operand 1003 states and 1249 transitions. Second operand has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-12-21 20:59:03,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:59:03,642 INFO L93 Difference]: Finished difference Result 1003 states and 1249 transitions. [2021-12-21 20:59:03,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 20:59:03,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 584 [2021-12-21 20:59:03,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:59:03,645 INFO L225 Difference]: With dead ends: 1003 [2021-12-21 20:59:03,646 INFO L226 Difference]: Without dead ends: 1002 [2021-12-21 20:59:03,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:59:03,646 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 100 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 272 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 [2021-12-21 20:59:03,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 272 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:59:03,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2021-12-21 20:59:03,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 1002. [2021-12-21 20:59:03,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 956 states have (on average 1.1903765690376569) internal successors, (1138), 968 states have internal predecessors, (1138), 40 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (70), 31 states have call predecessors, (70), 40 states have call successors, (70) [2021-12-21 20:59:03,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1248 transitions. [2021-12-21 20:59:03,672 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1248 transitions. Word has length 584 [2021-12-21 20:59:03,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:59:03,672 INFO L470 AbstractCegarLoop]: Abstraction has 1002 states and 1248 transitions. [2021-12-21 20:59:03,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-12-21 20:59:03,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1248 transitions. [2021-12-21 20:59:03,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2021-12-21 20:59:03,676 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:59:03,677 INFO L514 BasicCegarLoop]: trace histogram [12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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] [2021-12-21 20:59:03,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-21 20:59:03,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-21 20:59:03,901 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:59:03,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:59:03,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1635273478, now seen corresponding path program 1 times [2021-12-21 20:59:03,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:59:03,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560645135] [2021-12-21 20:59:03,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:03,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:59:04,561 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:59:04,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [449880484] [2021-12-21 20:59:04,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:04,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:04,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:59:04,579 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) [2021-12-21 20:59:04,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-21 20:59:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:59:10,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 14133 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 20:59:10,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:59:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2563 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2561 trivial. 0 not checked. [2021-12-21 20:59:10,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:59:11,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2563 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2561 trivial. 0 not checked. [2021-12-21 20:59:11,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:59:11,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560645135] [2021-12-21 20:59:11,628 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:59:11,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449880484] [2021-12-21 20:59:11,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449880484] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:59:11,628 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 20:59:11,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-12-21 20:59:11,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631358603] [2021-12-21 20:59:11,629 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 20:59:11,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 20:59:11,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:59:11,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 20:59:11,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 20:59:11,630 INFO L87 Difference]: Start difference. First operand 1002 states and 1248 transitions. Second operand has 10 states, 9 states have (on average 18.444444444444443) internal successors, (166), 10 states have internal predecessors, (166), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-21 20:59:11,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:59:11,860 INFO L93 Difference]: Finished difference Result 1094 states and 1399 transitions. [2021-12-21 20:59:11,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 20:59:11,860 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 18.444444444444443) internal successors, (166), 10 states have internal predecessors, (166), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 595 [2021-12-21 20:59:11,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:59:11,864 INFO L225 Difference]: With dead ends: 1094 [2021-12-21 20:59:11,865 INFO L226 Difference]: Without dead ends: 1093 [2021-12-21 20:59:11,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1195 GetRequests, 1180 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2021-12-21 20:59:11,866 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 367 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 20:59:11,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 439 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 20:59:11,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2021-12-21 20:59:11,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1092. [2021-12-21 20:59:11,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 1013 states have (on average 1.2092793682132281) internal successors, (1225), 1055 states have internal predecessors, (1225), 70 states have call successors, (70), 6 states have call predecessors, (70), 8 states have return successors, (100), 34 states have call predecessors, (100), 70 states have call successors, (100) [2021-12-21 20:59:11,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1395 transitions. [2021-12-21 20:59:11,903 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1395 transitions. Word has length 595 [2021-12-21 20:59:11,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:59:11,904 INFO L470 AbstractCegarLoop]: Abstraction has 1092 states and 1395 transitions. [2021-12-21 20:59:11,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 18.444444444444443) internal successors, (166), 10 states have internal predecessors, (166), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-21 20:59:11,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1395 transitions. [2021-12-21 20:59:11,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2021-12-21 20:59:11,911 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:59:11,912 INFO L514 BasicCegarLoop]: trace histogram [12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:59:11,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-21 20:59:12,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-21 20:59:12,131 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:59:12,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:59:12,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1399067366, now seen corresponding path program 2 times [2021-12-21 20:59:12,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:59:12,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127040592] [2021-12-21 20:59:12,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:12,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:59:12,729 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:59:12,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1548497247] [2021-12-21 20:59:12,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 20:59:12,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:12,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:59:12,731 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) [2021-12-21 20:59:12,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-21 20:59:18,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 20:59:18,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:59:18,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 14241 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-21 20:59:18,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:59:19,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2641 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 2561 trivial. 0 not checked. [2021-12-21 20:59:19,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:59:20,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2641 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 2585 trivial. 0 not checked. [2021-12-21 20:59:20,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:59:20,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127040592] [2021-12-21 20:59:20,487 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:59:20,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548497247] [2021-12-21 20:59:20,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548497247] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:59:20,487 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 20:59:20,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2021-12-21 20:59:20,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332751658] [2021-12-21 20:59:20,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 20:59:20,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-21 20:59:20,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:59:20,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-21 20:59:20,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-12-21 20:59:20,489 INFO L87 Difference]: Start difference. First operand 1092 states and 1395 transitions. Second operand has 22 states, 21 states have (on average 10.333333333333334) internal successors, (217), 22 states have internal predecessors, (217), 10 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2021-12-21 20:59:21,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:59:21,312 INFO L93 Difference]: Finished difference Result 1274 states and 1696 transitions. [2021-12-21 20:59:21,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-21 20:59:21,313 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 10.333333333333334) internal successors, (217), 22 states have internal predecessors, (217), 10 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) Word has length 631 [2021-12-21 20:59:21,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:59:21,317 INFO L225 Difference]: With dead ends: 1274 [2021-12-21 20:59:21,317 INFO L226 Difference]: Without dead ends: 1273 [2021-12-21 20:59:21,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1279 GetRequests, 1240 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=549, Invalid=1091, Unknown=0, NotChecked=0, Total=1640 [2021-12-21 20:59:21,319 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 1347 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 20:59:21,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1357 Valid, 1354 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 20:59:21,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2021-12-21 20:59:21,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1272. [2021-12-21 20:59:21,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 1127 states have (on average 1.241348713398403) internal successors, (1399), 1229 states have internal predecessors, (1399), 130 states have call successors, (130), 12 states have call predecessors, (130), 14 states have return successors, (160), 40 states have call predecessors, (160), 130 states have call successors, (160) [2021-12-21 20:59:21,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1689 transitions. [2021-12-21 20:59:21,358 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1689 transitions. Word has length 631 [2021-12-21 20:59:21,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:59:21,358 INFO L470 AbstractCegarLoop]: Abstraction has 1272 states and 1689 transitions. [2021-12-21 20:59:21,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 10.333333333333334) internal successors, (217), 22 states have internal predecessors, (217), 10 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2021-12-21 20:59:21,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1689 transitions. [2021-12-21 20:59:21,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2021-12-21 20:59:21,364 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:59:21,365 INFO L514 BasicCegarLoop]: trace histogram [12, 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, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:59:21,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-21 20:59:21,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-21 20:59:21,587 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:59:21,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:59:21,588 INFO L85 PathProgramCache]: Analyzing trace with hash 34057562, now seen corresponding path program 3 times [2021-12-21 20:59:21,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:59:21,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966531797] [2021-12-21 20:59:21,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:21,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:59:22,253 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:59:22,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [991833504] [2021-12-21 20:59:22,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 20:59:22,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:22,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:59:22,255 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) [2021-12-21 20:59:22,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-21 20:59:27,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-21 20:59:27,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:59:27,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 1559 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 20:59:27,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:59:28,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3121 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 3020 trivial. 0 not checked. [2021-12-21 20:59:28,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:59:28,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:59:28,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966531797] [2021-12-21 20:59:28,579 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:59:28,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991833504] [2021-12-21 20:59:28,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991833504] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:59:28,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:59:28,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 20:59:28,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090817463] [2021-12-21 20:59:28,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:59:28,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 20:59:28,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:59:28,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 20:59:28,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:59:28,582 INFO L87 Difference]: Start difference. First operand 1272 states and 1689 transitions. Second operand has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 20:59:28,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:59:28,685 INFO L93 Difference]: Finished difference Result 1589 states and 2176 transitions. [2021-12-21 20:59:28,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 20:59:28,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 703 [2021-12-21 20:59:28,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:59:28,691 INFO L225 Difference]: With dead ends: 1589 [2021-12-21 20:59:28,691 INFO L226 Difference]: Without dead ends: 1588 [2021-12-21 20:59:28,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-21 20:59:28,693 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 146 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:59:28,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 357 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:59:28,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2021-12-21 20:59:28,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1515. [2021-12-21 20:59:28,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1298 states have (on average 1.2788906009244991) internal successors, (1660), 1454 states have internal predecessors, (1660), 193 states have call successors, (193), 21 states have call predecessors, (193), 23 states have return successors, (223), 49 states have call predecessors, (223), 193 states have call successors, (223) [2021-12-21 20:59:28,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 2076 transitions. [2021-12-21 20:59:28,749 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 2076 transitions. Word has length 703 [2021-12-21 20:59:28,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:59:28,750 INFO L470 AbstractCegarLoop]: Abstraction has 1515 states and 2076 transitions. [2021-12-21 20:59:28,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 20:59:28,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 2076 transitions. [2021-12-21 20:59:28,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2021-12-21 20:59:28,756 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:59:28,757 INFO L514 BasicCegarLoop]: trace histogram [12, 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, 9, 9, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:59:28,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-21 20:59:28,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:28,979 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:59:28,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:59:28,980 INFO L85 PathProgramCache]: Analyzing trace with hash 2099048977, now seen corresponding path program 1 times [2021-12-21 20:59:28,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:59:28,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472405554] [2021-12-21 20:59:28,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:28,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:59:29,491 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:59:29,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982623808] [2021-12-21 20:59:29,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:29,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:29,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:59:29,492 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) [2021-12-21 20:59:29,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-21 20:59:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:59:37,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 14459 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-21 20:59:37,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:59:38,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3112 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 2561 trivial. 0 not checked. [2021-12-21 20:59:38,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:59:39,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3112 backedges. 0 proven. 371 refuted. 0 times theorem prover too weak. 2741 trivial. 0 not checked. [2021-12-21 20:59:39,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:59:39,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472405554] [2021-12-21 20:59:39,860 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:59:39,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982623808] [2021-12-21 20:59:39,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982623808] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:59:39,860 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 20:59:39,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 45 [2021-12-21 20:59:39,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520660901] [2021-12-21 20:59:39,860 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 20:59:39,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-21 20:59:39,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:59:39,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-21 20:59:39,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-12-21 20:59:39,862 INFO L87 Difference]: Start difference. First operand 1515 states and 2076 transitions. Second operand has 46 states, 45 states have (on average 7.133333333333334) internal successors, (321), 46 states have internal predecessors, (321), 22 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24)